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Thermally Responsive Single-Compartment Polysaccharide Microreactors for Molecular Diagnostics 认领 引用
1
作者 CUI Yaxin DOU Hongjing 《Journal of Shanghai Jiaotong university(Science)》 EI 2026年第3期548-555,I0002,共8页
Molecular diagnostics based on reverse transcription quantitative polymerase chain reaction(RT-qPCR)relies on temperature-dependent enzymatic reactions that require compatibility with thermal cycling processes.In this... Molecular diagnostics based on reverse transcription quantitative polymerase chain reaction(RT-qPCR)relies on temperature-dependent enzymatic reactions that require compatibility with thermal cycling processes.In this study,thermally responsive single-compartment polysaccharide microreactors were fabricated using a water-in-oil emulsion strategy combined with in situ agarose gelation.The effects of oil phase composition and agarose concentration on microsphere formation,size distribution,and protein encapsulation were systematically investigated,and isooctanol was identified as an effective oil phase for achieving stable emulsification with reduced interfacial leakage.Reverse transcriptase and DNA polymerase were subsequently encapsulated to construct single-compartment microreactors,and the biochemical compatibility of these microreactors was evaluated using a one-step RT-qPCR assay.The encapsulated enzyme systems exhibited amplification curves and cycle threshold values comparable to those of free enzyme controls,without detectable inhibition or kinetic interference.Moreover,multiplex RT-qPCR assays confirmed preserved detection specificity without apparent cross-reactivity.These results demonstrate that thermally responsive agarose microreactors provide a structurally stable and functionally neutral platform that is compatible with RT-qPCR workflows for molecular diagnostic applications. 展开更多
关键词 thermally responsive microreactor polysaccharide microreactor enzyme encapsulation reverse transcription quantitative polymerase chain reaction(RT-qPCR)
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Data scarcity solutions in microreactor modeling co-driven by generic mechanisms and data generation 认领 引用
2
作者 Muxuan Qin Ziliang Li +3 位作者 Wei Zhang Wenjin Zhou Boxiao Ren Jiayuan Yang 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2026年第3期141-149,共9页
Data scarcity is a critical challenge in microreactor modeling,often stemming from long experimental cycle times.This study proposes an innovative hybrid framework synergistically integrating transfer learning(TL)and ... Data scarcity is a critical challenge in microreactor modeling,often stemming from long experimental cycle times.This study proposes an innovative hybrid framework synergistically integrating transfer learning(TL)and generative adversarial networks(GANs)to overcome this limitation.TL was employed to extract generic mechanisms from conventional reactors,while GANs generated high-fidelity synthetic data.The resulting model,fine-tuned with limited experimental microreactor data,demonstrated enhanced domain adaptability.This synergistic framework achieved a 30.5% reduction in mean absolute error and a 27.8% improvement in the coefficient of determination(R2)compared to using TL alone.Furthermore,SHapley Additive exPlanations analysis elucidated the influence of key operating parameters.Subsequent optimization using a genetic algorithm identified optimal conditions,achieving a deviation of only 2.11% between model prediction and experimental validation.This work presents a robust approach for accurately modeling and optimizing microreactor systems under data-scarce conditions. 展开更多
关键词 Microreactor modeling Data scarcity Knowledge transfer Data generation Machine learning
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Fluorosurfactants and their application in droplet microreactors: An overview 认领 引用
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作者 Wei Cheng Huilin Wen +2 位作者 Xiaoqiang Chen Shaobin Zhang Ziyi Yu 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2025年第2期314-326,共13页
Fluorosurfactants play a crucial role in ensuring the stability and uniformity of droplet microreactors,which significantly broaden their applications in chemical and biological research.This review covers structure d... Fluorosurfactants play a crucial role in ensuring the stability and uniformity of droplet microreactors,which significantly broaden their applications in chemical and biological research.This review covers structure diversity and functional versatility of fluorosurfactants.Fluorosurfactants can be divided into two basic types according to their structure,linear and dendritic types,which both provides individual advantages.Linear fluorosurfactants are easily synthesized and commercially available,whereas dendritic fluorosurfactants have a branched structure that greatly reduces molecular cross-talk between droplets.Based on the application point of view,fluorosurfactants can be further classified into two categories:reactive and responsive fluorosurfactants.The hydrophilic head of reactive fluorosurfactants contains a reactive functional group,making them very useful in other applications,such as microcapsule preparation or protein crystallization.In contrast,responsive fluorosurfactants would change their properties with respect to external stimuli,such as temperature or light,making them perfect candidates for the on-demand control of droplet behavior.Development of these new classes of fluorosurfactants has expanded the capabilities and applications of droplet microreactors that enables interdisciplinary challenges to be solved. 展开更多
关键词 Microreactor Surfactants Interface Droplet stability Linear/dendric surfactants Reactiveesponsive fluorosurfactants
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Construction of A-FeOx/LaFeO3hybrid microreactors for efficient photocatalytic degradation of organic pollutants 认领 引用 被引量：3
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作者 Wen Zhu Fangyi Tang +4 位作者 Xiao Xu Shuai Lyu Ping Xiao Xuelian Xu Junjiang Zhu 《Journal of Rare Earths》 SCIE EI CAS CSCD 2025年第5期953-961,共9页
Low-dimensional hybrid nanocrystals are newly emerging active photo catalysts for separating electron-hole pairs,but the instability and low quantum efficiency caused by particle aggregation and hybrid structure relax... Low-dimensional hybrid nanocrystals are newly emerging active photo catalysts for separating electron-hole pairs,but the instability and low quantum efficiency caused by particle aggregation and hybrid structure relaxation remain great challenges.To this end,herein we constructed amorphous FeOx(A-FeOx)and crystalline LaFeO3hybrids by a sol-gel method.The amorphous-crystalline hybrids,A-FeOx/LaFeO3,not only improve the surface area and alter the band position,but also form numerous channels that are conducive to the transport of electrons and separation of electron-hole pairs,acting as microreactors.Photocatalytic tests show that the A-FeOx/LaFeO3is highly active for the degradation of various organic pollutants,with reaction rate constant of 1.19×10-2min-1for cipro floxacin degradation,for example,which is 1.82 and 1.87 times higher than that of LaFeO3and Fe2O3/LaFeO3,respectively,owing to the formation of microreactors between A-FeOxand LaFeO3.Cycling tests show that the mate rial has good stability in the reaction,and trapping experiments demonstrate that the photo-induced holes are the main reactive species of the reaction.This work provides a novel and feasible insight into the design of high performance low-dimensional hybrid nanocatalysts for photocatalysis. 展开更多
关键词 Photocatalytic degradation Microreactor Amorphous-crystalline interface Electron transfer Rare earths
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Confining Molecular rhodium phosphine catalysts within liquid-solid hybrid microreactor for olefin hydroformylation 认领 引用
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作者 Xiaoting Hao Qi Liu +2 位作者 Yuwei Wang Xiaoming Zhang Hengquan Yang 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 2025年第6期261-270,共10页
The concept of liquid-solid hybrid catalyst that featuring a truly homogeneous liquid microenvironment together with insoluble solid characteristics has been established recently by our group,which enables us to conve... The concept of liquid-solid hybrid catalyst that featuring a truly homogeneous liquid microenvironment together with insoluble solid characteristics has been established recently by our group,which enables us to conveniently bridge the gap between homo-and heterogeneous catalysis.In this study,we extend this general concept to the confinement of molecular rhodium phosphine complexes,including Rh-TPPTS,Rh-TPPMS and Rh-SXP,for olefin hydroformylation reactions.A series of hybrid catalyst materials consisting a modulated liquid interior([BMIM]NTf2,[BMIM]PF6,[BMIM]BF4 or H2O)and a permeable silica crust were fabricated through our developed Pickering emulsion-based method,showing 9.4–24.2-fold activity enhancement and significantly improved aldehyde selectivity(from 72.2%,61.8%to 86.6%)compared to their biphasic counterparts or traditional supported liquid phase system in the hydroformylation of 1-dodecene.Interestingly,the catalytic efficiency was demonstrated to be tunable by rationally engineering the thickness of porous crust and dimensions of the liquid pool.The thus-attained hybrid catalyst could also successfully catalyze the hydroformylation of a variety of olefin substrates and be recycled without a significant loss of activity for at least seven times. 展开更多
关键词 Immobilization Molecular catalyst Olefin hydroformylation Heterogeneous catalysis Hybrid microreactor
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Integrated UV-based photo microreactor-distillation technology toward process intensification of continuous ultra-high-purity electronic-grade silicon tetrachloride manufacture 认领 引用 被引量：4
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作者 Ye Wan Wenhui Guo +9 位作者 Jin Xiao Dazhou Yan Xiong Zhao Shuhu Guo Jianhua Liu Qifan Zhong Tao Yang Yu Zhao Xin Chang Xin Gao 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2020年第9期2248-2255,共8页
Ultra-high-purity silicon tetrachloride(SiCl4)is demanded as an electronic-grade chemical to meet the stringent requirements of the rapidly developing semiconductor industry.The high requirement for ultra-high-purity ... Ultra-high-purity silicon tetrachloride(SiCl4)is demanded as an electronic-grade chemical to meet the stringent requirements of the rapidly developing semiconductor industry.The high requirement for ultra-high-purity SiCl4 has created the need for a high-efficient process for reducing energy consumption as well as satisfying product quality.In this paper,a mass of production technology of ultra-high-purity SiCl4 was successfully developed through chlorination reaction in the ultraviolet(UV)-based photo microreactor coupled with the distillation process.The influences of key operational parameters,including temperature,pressure,UV wavelength and light intensity on the product quality,especially for hydrogen-containing impurities,were quantified by the infrared transmittance of Fourier transform infrared spectroscopy(FT-IR)at 2185 cm^-1and 2160 cm^-1indicating that chara cteristic vib rational modes of Si-H bonds,as well as the operating conditions of distillation were also investigated as key factors for metal impurities removing.The advanced intensification of SiCl4 manufactured by the integration of photo microreactor and distillation achieves the products with superior specifications higher than the standard commercial products. 展开更多
关键词 SiCl4 Process intensification Photochlorination Microreactor Distillation
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Gas-liquid-liquid slug flow and mass transfer in hydrophilic and hydrophobic microreactors 认领 引用 被引量：4
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作者 Yanyan Liu Chaoqun Yao Guangwen Chen 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2022年第10期85-94,共10页
Gas-liquid-liquid three-phase slug flow was generated in both hydrophilic and hydrophobic microreactors with double T-junctions.The bubble-droplet relative movement and the local mass transfer within the continuous sl... Gas-liquid-liquid three-phase slug flow was generated in both hydrophilic and hydrophobic microreactors with double T-junctions.The bubble-droplet relative movement and the local mass transfer within the continuous slug and the dispersed droplet were investigated.It was found that bubbles moved faster than droplets under low capillary number(Ca),while droplets moved faster upon the increase of Ca due to the increased inertia.For the first time,we observed that the increased viscosity of droplets fastened the droplet movement.The mass transfer in the continuous slug was dominated by convection,leading to nearly constant global mass transfer coefficient(kLa);while that in the dispersed droplet was dominated by diffusion,resulting in kL decreasing along the channel.Such features are analogical to the corresponding gas-liquid or liquid-liquid two-phase slug flow,but the formation of bubble-droplet clusters caused by relative movement lowered the absolute mass transfer coefficient.These results provide insights for the precise manipulation of gas-liquid-liquid slug flow in microreactors towards process optimization. 展开更多
关键词 Mass transfer Multiphase flow Slug flow Microreactor Colorimetric method
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Continuous synthesis of dolutegravir sodium crystals using liquid-gas heterogeneous microreactor 认领 引用 被引量：1
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作者 Wei Luo Fen Liu +4 位作者 Yaohao Guo Junjie Qiu Jinrui Yan Shuangliang Zhao Bo Bao 《Chinese Chemical Letters》 SCIE CAS CSCD 2023年第3期302-307,共6页
In this work, a liquid-gas heterogeneous microreactor was developed for investigating continuous crystallization of dolutegravir sodium(DTG), as well as revealing reaction kinetics and mixing mechanism with 3-min data... In this work, a liquid-gas heterogeneous microreactor was developed for investigating continuous crystallization of dolutegravir sodium(DTG), as well as revealing reaction kinetics and mixing mechanism with 3-min data acquisition. The reaction kinetics models were established by visually recording the concentration variation of reactants over time in the microchannel via adding pH-sensitive fluorescent dye. The mixing intensification mechanism of liquid-gas flow was quantified through the fluorescent signal to indicate mixing process, demonstrating an outstanding mixing performance with a mixing time less than 0.1 s. Compared with batch crystallization, continuous synthesis of dolutegravir sodium using liquid-gas heterogenous microreactor optimizes crystal distribution size, and successfully modifies the crystal morphology in needle-like habit instead of rod-like habit. The microreactor continuous crystallization can run for 5 h without crystal blockage and achieve D90 of DTG less than 30 μm. This work provides a feasible approach for continuously synthesizing dolutegravir sodium, and can optimize the existing pharmaceutical crystallization. 展开更多
关键词 Microreactor continuous crystallization Dolutegravir sodium Reaction kinetics Mixing mechanism Crystal morphology Process operation
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Assessing mixing uniformity in microreactors via in-line spectroscopy 认领 引用
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作者 Shusaku Asano Shinji Kudo +3 位作者 Taisuke Maki Yosuke Muranaka Kazuhiro Mae Jun-ichiro Hayashi 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2024年第2期119-124,共6页
Mixing behavior is critical for enhancing the selectivity of fast chemical reactions in microreactors.A high Reynolds number(Re)improves the mixing rate and selectivity of the reactions,but some exceptions of increasi... Mixing behavior is critical for enhancing the selectivity of fast chemical reactions in microreactors.A high Reynolds number(Re)improves the mixing rate and selectivity of the reactions,but some exceptions of increasing side product yield with the higher Re have been reported.This study investigated the mixing uniformity in microreactors with in-line UV-vis spectroscopy to clarify the relationship between reaction selectivity and chaotic mixing with the higher Re.A colorization experiment of thymolphthalein in an acidic solution was conducted with an excess acid amount to the base to indicate a non-uniformly mixed region.Non-uniformity significantly increased with Re.At the same time,the degree of mixing,which was measured by a usual decolorization experiment,showed that the mixing rate increased with Re.The in-line analysis of the Villermaux-Dushman reaction during the mixing clarified that side product yield significantly increased with Re at around 300 and then decreased at around 1100.These results suggest the compensation effect between the mixing uniformity and mixing rate on the selectivity of the mixing-sensitive reactions.Faster mixing,characterized by a larger Re,can disturb mixing uniformity and,in some cases,decrease reaction selectivity. 展开更多
关键词 Microreactor Villermaux-Dushman reaction In-line analysis Mixing Mass transfer Uniformity
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Continuous synthesis of N,N-dicyanoethylaniline in microreactors:Reaction kinetics and process intensification 认领 引用
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作者 Pengcheng Lu Yaoyao Li +5 位作者 Jianjun Zhang Yuchao Zhao Qingqiang Wang Ying Chen Nan Jin Xiugang Yu 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2024年第8期95-105,共11页
Cyanoethylation of phenylamine is one of the important steps for the production of dicyanoethyl-based disperse dyes.However,the exothermic nature of this reaction and the inherent instability of intermittent dynamic o... Cyanoethylation of phenylamine is one of the important steps for the production of dicyanoethyl-based disperse dyes.However,the exothermic nature of this reaction and the inherent instability of intermittent dynamic operation pose challenges in achieving both high safety and reaction efficiency.In this study,a continuous cyanoethylation of phenylamine for synthesizing N,N-dicyanoethylaniline in a microreactor system has been developed.By optimizing the reaction conditions,the reaction time was significantly reduced from over 2 h in batch operation to approximately 14 min in the microreactor,while high conversion and selectivity were maintained.Based on the reaction network constructed,the reaction kinetics was established,and the kinetic parameters were then determined.These findings provide valuable insights into a controllable cyanoethylation reaction,which would be helpful for the design of efficient processes and optimization of reactors. 展开更多
关键词 Cyanoethylation Microreactor Kinetics N,N-dicyanoethylaniline Optimization Safety
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Polygonal mesopores microflower catalysts for the catalytic oxidation of 2-nitro-4-methylsulfonyltoluene to 2-nitro-4-methylsulfonylbenzoic acid in a continuous-flow microreactor 认领 引用
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作者 Jianzhi Wang Xugen Li +6 位作者 Cheng Zhang Yuan Pu Jiawu Liu Jie Liu Yanping Liu Xiao Lin Faquan Yu 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2024年第9期212-221,共10页
The development of efficient systems for the catalytic oxidation of 2-nitro-4-methylsulfonyltoluene(NMST)to 2-nitro-4-methylsulfonyl benzoic acid(NMSBA)with atmospheric air or molecular oxygen in alkaline medium prese... The development of efficient systems for the catalytic oxidation of 2-nitro-4-methylsulfonyltoluene(NMST)to 2-nitro-4-methylsulfonyl benzoic acid(NMSBA)with atmospheric air or molecular oxygen in alkaline medium presents a significant challenge for the chemical industry.Here,we report the synthesis of FeOOH/Fe3O4/metal-organic framework(MOF)polygonal mesopores microflower templated from a MIL-88B(Fe)at room temperature,which exposes polygonal mesopores with atomistic edge steps and lattice defects.The obtained FeOOH/Fe3O4/MOF catalyst was adsorbed onto glass beads and then introduced into the microchannel reactor.In the alkaline environment,oxygen was used as oxidant to catalyze the oxidation of NMST to NMSBA,showing impressive performance.This sustainable system utilizes oxygen as a clean oxidant in an inexpensive and environmentally friendly NaOH/methanol mixture.The position and type of substituent critically affect the products.Additionally,this sustainable protocol enabled gram-scale preparation of carboxylic acid and benzyl alcohol derivatives with high chemoselectivities.Finally,the reactions can be conducted in a pressure reactor,which can conserve oxygen and prevent solvent loss.Moreover,compared with the traditional batch reactor,the self-built microchannel reactor can accelerate the reaction rate,shorten the reaction time,and enhance the selectivity of catalytic oxidation reactions.This approach contributes to environmental protection and holds potential for industrial applications. 展开更多
关键词 2-nitro-4-methylsulfonylbenzoic 2-nitro-4-methylsulfonyltoluene FeOOH/Fe3O4/MOF Catalyst Microreactor Oxidation
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Gas–liquid flow mass transfer in a T-shape microreactor stimulated with 1.7 MHz ultrasound waves 认领 引用 被引量：6
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作者 Mona Akbari Masoud Rahimi Mahboubeh Faryadi 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2017年第9期1143-1152,共10页
This paper describes the application of ultrasound waves on hydrodynamics and mass transfer characteristics in the gas–liquid flow in a T-shape microreactor with a diameter of 800 μm. A 1.7 MHz piezoelectric transdu... This paper describes the application of ultrasound waves on hydrodynamics and mass transfer characteristics in the gas–liquid flow in a T-shape microreactor with a diameter of 800 μm. A 1.7 MHz piezoelectric transducer(PZT) was employed to induce the vibration in this microreactor. Liquid side volumetric mass transfer coefficients were measured by physical and chemical methods of CO_2 absorption into water and Na OH solution. The approach of absorption of CO_2 into a 1 mol·L-1 Na OH solution was used for analysis of interfacial areas. With the help of a photography system, the fluid flow patterns inside the microreactor were analyzed. The effects of superficial liquid velocity, initial concentration of Na OH, superficial CO_2 gas velocity and length of microreactor on the mass transfer rate were investigated. The comparison between sonicated and plain microreactors(microreactor with and without ultrasound) shows that the ultrasound wave irradiation has a significant effect on kLa and interfacial area at various operational conditions. For the microreactor length of 12 cm, ultrasound waves improved kLa and interfacial area about 21% and 22%, respectively. From this study, it can be concluded that ultrasound wave irradiation in microreactor has a great effect on the mass transfer rate. This study suggests a new enhancement technique to establish high interfacial area and kLa in microreactors. 展开更多
关键词 Ultrasound waves Microreactor Gas–liquid flow Mass transfer Absorption
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Conceptual design and neutronic analysis of a megawatt-level vehicular microreactor based on TRISO fuel particles and S-CO2 direct power generation 认领 引用 被引量：2
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作者 Fang-Yuan Zhang Gui-Feng Zhu +2 位作者 Yang Zou Rui Yan Hong-Jie Xu 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2022年第6期18-33,共16页
With global warming,the demand for diversified energy sources has increased significantly.Transportable microreactors are important potential supplements to the global power market and are a promising development dire... With global warming,the demand for diversified energy sources has increased significantly.Transportable microreactors are important potential supplements to the global power market and are a promising development direction.This paper describes a 5 MW integrated long-life S-CO2cooled vehicular microreactor(VMR)design based on tristructural isotropic(TRISO)fuel particles that aims to provide electricity for industrial power facilities,remote mines,and remote mountainous areas that are not connected to central power grids.First,to facilitate transportation,flexible deployment,and simplified operation and maintenance requirements,the VMR core and auxiliary system were designed to be reasonably small and as simple as possible.Second,the TRISO fuel particles used in the proposed VMR offer excellent properties,such as high inherent security and nonproliferation,which are vital for reactors in remote areas.In addition,a long core lifetime was achieved using the compact core design and enhanced fuel loading capacity,which is challenging when using TRISO as fuel.Finally,to make the VMR economically competitive in terms of improved neutron performance and fuel efficiency compared to similar designs,large-size TRISO particles and tube-in-duct fuel assembly were utilized and different core configurations were schemed and simulated to obtain the design that best satisfied the proposed criteria.The lifetime and burnup in the final optimized VMR were satisfactory at 21 years and43.9 MWd/kgU,respectively,with an adequate shutdown margin and excellent safety parameters to ensure safe operation. 展开更多
关键词 Vehicular microreactor Tristructural isotropic particle Tube-in-duct assembly Compact core Lifetime Burnup
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Computational fluid dynamics simulation and experimental study on mixing performance of a three-dimensional circular cyclone-type microreactor 认领 引用 被引量：2
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作者 Shiyu Hou Maolin Sun +5 位作者 Liming Cao Chaoming Liang Jiaxin Yang Xinggui Zhou Jinxing Ye Ruihua Cheng 《Chinese Chemical Letters》 SCIE CAS CSCD 2024年第4期382-388,共7页
Microchannels enable the fast and efficient mixing of multiphase fluids.In this study,a millimeter-scale three-dimensional(3D)circular cyclone-type microreactor was designed for the mixing.The flow characteristics and... Microchannels enable the fast and efficient mixing of multiphase fluids.In this study,a millimeter-scale three-dimensional(3D)circular cyclone-type microreactor was designed for the mixing.The flow characteristics and mixing intensity were simulated by computational fluid dynamics simulations at a flow rate range of 12–96 m L/min using a water/ethyl acetate system.In the 3D variable-diameter structure,the microreactor induced paired opposite vortices and abruptly changed the local pressure to achieve a stable turbulent effect within the theoretical range of laminar flow.Tracer injection simulations indicated that sufficient mixing units successfully promote fluid dispersion.Diazo-coupling experiments showed a segregation index of X_S=0.00,039 within a residence time of 9 s.Extraction experiments on the nbutanol/succinic acid/water system showed that the 3D circular cyclone-type microreactor achieved 100%extraction efficiency(E)in 4.25 s,and the overall volume mass transfer coefficient(K_La)reached 0.05–1.5s-1in 12–96 m L/min.The isolated yield of the phase transfer alkylation and oxidation reactions in the 3D circular cyclone-type microreactor achieved 99%within 36 s,which was superior to the coil microreactor and batch reactor. 展开更多
关键词 Microfluidics Passive microreactor CFD simulation Extraction Liquid-liquid biphase reaction
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An efficient microreactor with continuous serially connected micromixers for the synthesis of superparamagnetic magnetite nanoparticles 认领 引用 被引量：2
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作者 Wenting Fan Fang Zhao +2 位作者 Ming Chen Jian Li Xuhong Guo 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2023年第7期85-91,共7页
A new microreactor with continuous serially connected micromixers(CSCM)was tailored for the coprecipitation process to synthesize Fe3O4 nanoparticles.Numerical simulation reveals that the two types of CSCM micro... A new microreactor with continuous serially connected micromixers(CSCM)was tailored for the coprecipitation process to synthesize Fe3O4 nanoparticles.Numerical simulation reveals that the two types of CSCM microchannels(V-typed and U-typed)proposed in this work exhibited markedly better mixing performances than the Zigzag and capillary microchannels due to the promotion of Dean vortices.Complete mixing was achieved in the V-typed microchannel in 2.7 s at an inlet Reynolds number of 27.Fe3O4 nanoparticles synthesized in a planar glass microreactor with the V-typed microchannel,possessing an average size of 9.3 nm and exhibiting superparamagnetism,had obviously better dispersity and uniformity and higher crystallinity than those obtained in the capillary microreactor.The new CSCM microreactor developed in this work can act as a potent device to intensify the synthesis of similar inorganic nanoparticles via multistep chemical precipitation processes. 展开更多
关键词 Microreactor Continuous serially connected micromixers Mixing Nanoparticles
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Synthesis of AgInS_2 QDs in droplet microreactors:Online fluorescence regulating through temperature control 认领 引用 被引量：1
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作者 Haotian Ma Liangjun Pan +2 位作者 Ji Wang Li Zhang Zhiling Zhang 《Chinese Chemical Letters》 SCIE CAS CSCD 2019年第1期79-82,共4页
For the synthesis of AgInS_2 quantum dots(QDs), a suitable temperature is extremely important for control of the size, shape and fluorescence properties of QDs. Most of synthesis methods for AgInS_2 QDs are based on b... For the synthesis of AgInS_2 quantum dots(QDs), a suitable temperature is extremely important for control of the size, shape and fluorescence properties of QDs. Most of synthesis methods for AgInS_2 QDs are based on batch reactors, which bring uneven distribution of temperature, affecting their fluorescence properties and size uniformity. Here we designed a droplet microreactor with a temperature-controllable region, and successfully synthesized water-soluble AgInS_2 QDs. By accurately controlling temperature,we also studied how the reaction temperature affected the fluorescence properties of AgInS_2 QDs. The results showed that with the increasing of reaction temperature, the QDs size increased and the fluorescence peak constantly red-shifted along with enhanced fluorescence intensity. Based on the droplet microreactor, we could achieve more appropriate reaction condition to synthesize AgInS_2 QDs with higher fluorescence quantum yield(QY) and intensity. 展开更多
关键词 AgInS2 Quantumdot Droplet microreactor Temperature Fluorescence property
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Two-step continuous flow process of sodium tanshinoneⅡA sulfonate using a 3D circular cyclone-type microreactor 认领 引用 被引量：1
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作者 Maolin Sun Chaoming Liang +7 位作者 Liming Cao Yaguo Wang Jiasheng Yang Shiyu Hou Wei Yu Yueyue Ma Ruihua Cheng Jinxing Ye 《Chinese Chemical Letters》 SCIE CAS CSCD 2024年第1期290-294,共5页
A sustainable and practical process is presented for the direct synthesis of sodium tanshinone IIA sulfonate(STS).Our approach was inspired by the well-established and industrially applied batch synthetic route for ST... A sustainable and practical process is presented for the direct synthesis of sodium tanshinone IIA sulfonate(STS).Our approach was inspired by the well-established and industrially applied batch synthetic route for STS production.We constructed a telescoped two-step continuous flow platform.This involved a continuous tanshinone IIA sulfonation and in-line salt formation.For the setup,we constructed a 3D circular cyclone-type microreactor using femtosecond laser micromachining.Compared to the 68%yield for 2 h in batch,the two-step continuous flow had an STS yield of 90%,achieved for a total residence time of<3.0 min under optimal conditions.The proposed continuous flow method vastly simplified the operation and improved procedural safety,while significantly reducing the required acid content and wastewater production. 展开更多
关键词 Continuous flow Sodium tanshinone IIA sulfonate Cardiovascular Microreactor Green chemistry
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Integrated synthesis and ripening of AgInS2QDs in droplet microreactors:An update fluorescence regulating via suitable temperature combination 认领 引用 被引量：1
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作者 Ji Wang Hao-Tian Ma +2 位作者 Liang-Jun Pan Li Zhang Zhi-Ling Zhang 《Chinese Chemical Letters》 SCIE CAS CSCD 2022年第8期3767-3771,共5页
Aqueous phase synthesized ternary I-III-VI2 Quantum dots(QDs)are getting more and more attention in biology researches,for their good biocompatibility and easy-to-adjust fluorescence properties.However,the quantum ... Aqueous phase synthesized ternary I-III-VI2 Quantum dots(QDs)are getting more and more attention in biology researches,for their good biocompatibility and easy-to-adjust fluorescence properties.However,the quantum yield(QY)of these aqueous phase synthesized QDs are often pretty low,which seriously hindered their further applications in this field.In general,the ripening of the QDs helps to enhance their QY,closely related to the ripening temperature.But it is still hard to precisely control the fluorescence performance of the QDs products,due to the difficulties in precise temperature control and cumbersome temperature adjusting operations in batch reactors.Here we proposed an integrated droplet microfluidic chip for the automated and successive AgInS2QDs synthesis and ripening,with both temperatures controlled independently,precisely but easily.Taking advantage of the space-time transformation of the droplet microfluidic chips,the suitable temperature combination for Ag In S2QDs synthesis and ripening was studied,and the high-performance AgInS2QDs were obtained.In addition,the reason for the decrease of QY of AgInS2QDs at higher ripening temperature was also explored. 展开更多
关键词 AgInS2 Quantum dot Ripening Droplet microreactor Temperature control
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Double Emulsion Droplets as Microreactors for Synthesis of Magnetic Macroporous Polymer Beads 认领 引用 被引量：2
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作者 Wei-cai Wang Chao Peng +3 位作者 Kai Shi Yan-xiong Pan 张海山 姬相玲 《Chinese Journal of Polymer Science》 SCIE EI CAS CSCD 2014年第12期1639-1645,共7页
An easy method is presented to fabricate monodisperse magnetic macroporous polymer beads（MMPBs）. Waterin-oil high internal phase emulsion（HIPE） is prepared by emulsifying aqueous iron ions solution in an oil phase... An easy method is presented to fabricate monodisperse magnetic macroporous polymer beads（MMPBs）. Waterin-oil high internal phase emulsion（HIPE） is prepared by emulsifying aqueous iron ions solution in an oil phase containing monomers. The HIPE is introduced into a simple microfluidic device to fabricate monodisperse（water-in-oil）-in-water double emulsion droplets. The droplets serve as microreactors to synthesize Fe3O4 nanoparticles and are on-line polymerized to form MMPBs. The prepared MMPBs display uniform size, interconnected porous structure, superparamagnetic behavior and uniform distribution of Fe3O4 in polymer matrix. The MMPBs are characterized by scanning electron microscopy（SEM）, Fourier transform infrared spectroscopy（FTIR）, X-ray diffraction（XRD）, transmission electron microscopy（TEM）, vibrating sample magnetometry（VSM）. We believe that this method is a universal technique in preparing macroporous nanocomposite beads. 展开更多
关键词 Double emulsion droplets Magnetic macroporous polymer beads Microreactor.
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Hydrogenation Behavior of Hydrogen Peroxide in a Microreactor 认领 引用 被引量：1
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作者 Zhu Hongwei Sun Bing +5 位作者 Jin Yan Feng Junjie Zhao Chenyang Yan Junjie Jiang Jie Xu Wei 《China Petroleum Processing & Petrochemical Technology》 SCIE CAS 2022年第4期29-35,共7页
The hydrogenation of hydrogen peroxide is an unwanted side reaction in the direct synthesis of hydrogen peroxide and remains a problem to solve.The mechanism of this reaction has been studied with batch reactors but t... The hydrogenation of hydrogen peroxide is an unwanted side reaction in the direct synthesis of hydrogen peroxide and remains a problem to solve.The mechanism of this reaction has been studied with batch reactors but the slow heat and mass transfer in batch reactors hindered the understanding of its intrinsic kinetics.In this study,a microreactor is employed to investigate the parameters that influence the hydrogenation reaction,including flow rate,channel length,hydrogen pressure,solvent composition,and initial hydrogen peroxide concentration.The activity of different catalysts was compared and the hydrogenation law was confirmed,providing guiding information to better control the hydrogenation process. 展开更多
关键词 hydrogenation hydrogen peroxide microreactor hydrogenation decomposition law catalyst passivation
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