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Promotion effect of Fe in the selective hydrogenation of furfural with bimetallic NiFe catalysts 认领 引用
1
作者 Xin Liu Yezhou Yang +2 位作者 Jingru Yang Maodi Wang Qihua Yang 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 2026年第4期411-418,共8页
The selective hydrogenation of furfural(FAL)to furfuryl alcohol(FOL)over Ni catalysts offers a sustainable route for biomass valorization.However,the conventional Ni catalysts suffer from poor selectivity in FAL hydro... The selective hydrogenation of furfural(FAL)to furfuryl alcohol(FOL)over Ni catalysts offers a sustainable route for biomass valorization.However,the conventional Ni catalysts suffer from poor selectivity in FAL hydrogenation.Herein,we report that the moderate Fe doping in Ni/TiO2 significantly enhances selectivity without compromising catalytic activity for the selective hydrogenation of FAL to FOL.Notably,Ni/Fe-TiO2 catalyst with Fe content≥4.9 wt% maintained>90%selectivity toward FOL at nearly 100% conversion,whereas Ni/TiO2 achieved only 38% under the identical condition.Combined experimental and theoretical studies revealed that the enhanced catalytic performance of Ni/Fe-TiO2 originates from the dilution of contiguous Ni sites by Fe,which suppresses the further hydrogenation of FOL.Moreover,Fe sites exhibited a stronger affinity for carbonyl groups compared to Ni(0),indicating complementary role where Ni(0)primarily facilitates H2 dissociation,while Fe sites play a critical role in carbonyl activation.These findings underscore the superior synergistic effect of bimetallic systems in promoting selective functional group transformation. 展开更多
关键词 Bimetallic catalysts Synergistic effect Selective hydrogenation Carbonyl groups
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Collection,processing,and sharing of a dataset for the selective hydrogenation of benzene to cyclohexene 认领 引用
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作者 SUN Chao ZHANG Bin 《燃料化学学报（中英文）》 EI CAS CSCD 北大核心 2026年第7期320-324,共5页
Cyclohexene is an important raw material for nylon production,and the selective hydrogenation of benzene is a key route for preparing cyclohexene.To promote data sharing and reuse in this field,we collected and standa... Cyclohexene is an important raw material for nylon production,and the selective hydrogenation of benzene is a key route for preparing cyclohexene.To promote data sharing and reuse in this field,we collected and standardized experimental data on the hydrogenation of benzene to cyclohexene from publicly available literature and constructed a comprehensive dataset containing catalyst composition,reaction conditions,and reaction results(conversion,selectivity and yield).This data descriptor details the source,field definitions,generation and processing workflow,quality control,sharing approach and usage recommendations of the dataset,with the aim of providing a reusable data foundation for subsequent statistical analysis,machine learning modeling,experimental design,and catalyst screening. 展开更多
关键词 selective hydrogenation of benzene cyclohexene dataset catalyst machine learning
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A Promising Strategy for Solvent-Regulated Selective Hydrogenation of 5-Hydroxymethylfurfural over Porous Carbon-Supported Ni-ZnO Nanoparticles 认领 引用 被引量：2
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作者 Rulu Huang Chao Liu +4 位作者 Kaili Zhang Jianchun Jiang Ziqi Tian Yongming Chai Kui Wang 《Nano-Micro Letters》 SCIE EI CAS CSCD 2026年第1期130-143,共14页
Developing biomass platform compounds into high value-added chemicals is a key step in renewable resource utilization.Herein,we report porous carbon-supported Ni-ZnO nanoparticles catalyst(Ni-ZnO/AC)synthesized via lo... Developing biomass platform compounds into high value-added chemicals is a key step in renewable resource utilization.Herein,we report porous carbon-supported Ni-ZnO nanoparticles catalyst(Ni-ZnO/AC)synthesized via low-temperature coprecipitation,exhibiting excellent performance for the selective hydrogenation of 5-hydroxymethylfurfural(HMF).A linear correlation is first observed between solvent polarity(ET(30))and product selectivity within both polar aprotic and protic solvent classes,suggesting that solvent properties play a vital role in directing reaction pathways.Among these,1,4-dioxane(aprotic)favors the formation of 2,5-bis(hydroxymethyl)furan(BHMF)with 97.5%selectivity,while isopropanol(iPrOH,protic)promotes 2,5-dimethylfuran production with up to 99.5%selectivity.Mechanistic investigations further reveal that beyond polarity,proton-donating ability is critical in facilitating hydrodeoxygenation.iPrOH enables a hydrogen shuttle mechanism where protons assist in hydroxyl group removal,lowering the activation barrier.In contrast,1,4-dioxane,lacking hydrogen bond donors,stabilizes BHMF and hinders further conversion.Density functional theory calculations confirm a lower activation energy in iPrOH(0.60 eV)compared to 1,4-dioxane(1.07 eV).This work offers mechanistic insights and a practical strategy for solvent-mediated control of product selectivity in biomass hydrogenation,highlighting the decisive role of solvent-catalyst-substrate interactions. 展开更多
关键词 Porous carbon-supported Ni-ZnO nanoparticles catalyst Selective hydrogenation 5-Hydroxymethylfurfural Solvent Proton-donating ability
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Towards highly efficient selective hydrogenation:The role of single-atom catalysts 认领 引用
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作者 Peikun Li Jinghui Lyu +8 位作者 Yiyong Zhao Han Wu Xianghao Zhang Qiannan Lu Yizhi Xiang Blaz Likozar Matej Hušc Adriana Zaleska-Medynska Xiaonian Li 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 2026年第2期69-96,共28页
Selective hydrogenation is crucial in various chemical processes and environmental applications, where precise control of reactivity and selectivity is essential for the efficient production of high-purity products. S... Selective hydrogenation is crucial in various chemical processes and environmental applications, where precise control of reactivity and selectivity is essential for the efficient production of high-purity products. Single-atom catalysts (SACs), with atomically dispersed metal sites, could bridge homogeneous and heterogeneous catalysis and have emerged as a transformative platform for highly efficient selective hydrogenation with minimal use of critical raw materials as catalysts. This review explores the latest advancements in this cutting-edge area. Specifically, we analyze the structure-activity relationships, such as catalytic properties and mechanisms that determine the reactivity and selectivity of such catalytic systems. Furthermore, we discuss challenges, including stability, synthesis scalability, coordination environment tuning, atomistic modeling, and mechanistic insights, while identifying research opportunities for optimizing SACs performance. If these challenges are addressed, SACs hold the potential to revolutionize selective hydrogenation processes, offering sustainable and highly efficient catalytic solutions for industrial applications. 展开更多
关键词 Single atom catalysis Selective hydrogenation H2activation Catalyst design Atomistic modelling
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Advances in selective hydrogenation ofα,β‑unsaturated aldehydes/ketones catalyzed by metal‑organic frameworks and their derivatives:A review 认领 引用
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作者 YANG Jiaxuan DENG Chenfa +7 位作者 LIU Jingyang XU Chenzexi CHEN Hongxin ZHU Yahui LI Ying WANG Shuhua ZHOU Rongping CHEN Chao 《无机化学学报》 SCIE CAS CSCD 北大核心 2025年第10期1973-2010,共38页
The selective hydrogenation ofα,β-unsaturated aldehydes/ketones enables precise control over product structures and properties by regulating hydrogen transport pathways and bond cleavage sequences to selectively red... The selective hydrogenation ofα,β-unsaturated aldehydes/ketones enables precise control over product structures and properties by regulating hydrogen transport pathways and bond cleavage sequences to selectively reduce C=C or C=O bonds while preserving other functional groups within the molecule.This approach serves as a critical strategy for the directional synthesis of high-value molecules.However,achieving such selectivity remains challenging due to the thermodynamic equilibrium and kinetic competition between C=O and C=C bonds inα,β-unsaturated systems.Consequently,constructing precisely targeted catalytic systems is essential to overcome these limitations,offering both fundamental scientific significance and industrial application potential.Metal-organic frameworks(MOFs)and their derivatives have emerged as innovative platforms for designing such systems,owing to their programmable topology,tunable pore microenvironments,spatially controllable active sites,and modifiable electronic structures.This review systematically summarizes the research progress of MOF-based catalysts for selec-tive hydrogenation ofα,β-unsaturated aldehydes/ketones in the last decade,with emphasis on the design strategy,conformational relationship,and catalytic mechanism,aiming to provide new ideas for the design of targeted catalyt-ic systems for the selective hydrogenation ofα,β-unsaturated aldehydes/ketones. 展开更多
关键词 α,β-unsaturated aldehydes/ketones metal-organic frameworks derivatives selective hydrogenation catalytic mechanism hydrogenation path
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Fabrication of carbon-supported Al2O3 nanoparticles via spontaneous cross-linking to enhance selective hydrogenation of furfural 认领 引用
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作者 Weiwei Yu Xinbao Zhang +6 位作者 Hongyu Chen Yanan Wang Shaoguo Li Fucun Chen Zhenni Liu Xiujie Li Xiangxue Zhu 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2025年第1期612-620,共9页
Selective hydrogenation of furfural to furfuryl alcohol is a great challenge in the hydrogenation field due to thermodynamic preference for hydrogenation of C=C over C=O.Herein,a novel Al2O3/C-u hybrid catalyst,... Selective hydrogenation of furfural to furfuryl alcohol is a great challenge in the hydrogenation field due to thermodynamic preference for hydrogenation of C=C over C=O.Herein,a novel Al2O3/C-u hybrid catalyst,composed of N-modified dendritic carbon networks supporting Al2O3nanoparticles,was successfully prepared via carbonizing the freeze-dried gel from spontaneous cross-linking of alginate,Al3+and urea.The obtained carbon-supported Al2O3hybrid catalyst has a high ratio (31%) of Al species in pentahedral-coordinated state.The introduction of urea enhances the surface N content,the ratio of pyrrolic N,and specific surface area of catalyst,leading to improved adsorption capacity of C=O and the accessibility of active sites.In the furfural hydrogenation reaction with isopropyl alcohol as hydrogen donor,Al2O3/C-u catalyst achieved a 90%conversion of furfural with 98.0% selectivity to furfuryl alcohol,outperforming that of commercial γ-Al2O3.Moreover,Al2O3/C-u demonstrates excellent catalytic stability in the recycling tests attributed to the synergistic effect of abundant weak Lewis acid sites and the anchoring effect of the carbon network on Al2O3nanoparticles.This work provides an innovative and facile strategy for fabrication of carbon-supported Al2O3hybrid catalysts with rich AlVspecies,serving as a high selective hydrogenation catalyst through MPV reaction route. 展开更多
关键词 Selective hydrogenation Furfural Furfuryl alcohol Cross-linking Carbon supported Al2O3 MPV route
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Balancing Acid and Diffusion Properties in Hierarchical Catalysts for Efficient Selective Hydrogenation of Oleic Acid 认领 引用
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作者 Jinlin Mei Jia Liu +7 位作者 Shaotong Song Zhentao Liu Zhengkai Cao Xiaoyang Kong Chunya Wang Xiaochun Zhu Chunming Xu Xilong Wang 《Carbon and Hydrogen》 SCIE CAS CSCD 2025年第2期191-201,共11页
Hierarchical Ni/ZSM-22-SBA-15 meso-microporous catalysts(Ni/ZS-x)with different acid properties and diffusion characteristics(acid-diffusion)properties were synthesized successfully and applied to the production of hi... Hierarchical Ni/ZSM-22-SBA-15 meso-microporous catalysts(Ni/ZS-x)with different acid properties and diffusion characteristics(acid-diffusion)properties were synthesized successfully and applied to the production of high-quality jet fuel by the efficient one-step hydrogenation(hydrodeoxygenation,isomerization,and cracking)of oleic acid.The acid-diffusion properties of the catalysts are modulated by tuning the ZSM-22 seed content,and their effects on the hydrogenation reactions were investigated.Acid properties affect the extent of isomerization and cleavage reactions,whereas diffusion properties affect the accessibility of active centers.The balanced acid-diffusion properties are conducive to efficient hydrogenation reactions of oleic acid.The optimal Ni/ZS-3 exhibits the highest jet fuel yield(56.3%,340°C)and superior iso-alkane ratio(i=3.12)because of its well-balanced acid-diffusion properties.Besides,the possible hydrogenation mechanism of oleic acid is proposed. 展开更多
关键词 acid-diffusion balance bio-jet fuel hierarchical catalysts oleic acid selective hydrogenation
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Enhanced selective hydrogenation of furfural to furfuryl alcohol in the organic-solvent-free system over Co/N-C via hydrogen spillover and acid-base modification 认领 引用
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作者 Yanliang Yang Mengping Fan +6 位作者 Weilong Ji Xiang Jia Xiaoqin Si Xin Liu Zhiyong Chen Tianliang Lu Ling-Ping Xiao 《Resources Chemicals and Materials》 2025年第4期33-42,共10页
The aqueous-phase hydrogenation of furfural to furfuryl alcohol using non-noble metal catalysts is constrained by the low activity of catalysts,necessitating high temperatures and high hydrogen pressures,and posing ch... The aqueous-phase hydrogenation of furfural to furfuryl alcohol using non-noble metal catalysts is constrained by the low activity of catalysts,necessitating high temperatures and high hydrogen pressures,and posing challenges in controlling furfuryl alcohol selectivity.Herein,a Co nanoparticle catalyst supported on nitrogendoped carbon derived from MOFs is reported,which adopts a synergistic strategy to enhance catalytic perfor-mance.The nitrogen doping simultaneously promotes hydrogen spillover on the catalyst surface and reduces surface acidity,thereby suppressing acid-catalyzed side reactions.This dual function enables the selective hy-drogenation of-C=O groups to-CH2OH groups in water under mild conditions.Furfural reached 98%con-version with 95%selectivity of furfuryl alcohol at 135℃ and under hydrogen pressure close to atmospheric(0.4 MPa)in 2 h.This study allows a low energy-consuming method for producing furfuryl alcohol from hemicellulose-derived furfural,and provides a promising strategy for the conversion of renewable biomassderived compounds into high value-added chemicals. 展开更多
关键词 Selective hydrogenation Hydrogen spillover Furfural Furfuryl alcohol Biomass conversion
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Hydrogen spillover enhances the selective hydrogenation ofα,β-unsaturated aldehydes on the Cu–O–Ce interface 认领 引用 被引量：1
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作者 Jinyuan Cui Tingting Yang +3 位作者 Teng Xu Jin Lin Kunlong Liu Pengxin Liu 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2025年第1期21-26,共6页
The industrially important selective hydrogenation ofα,β-unsaturated aldehydes to allyl alcohol is still challenging to realize using heterogenous hydrogenation catalysts.Supported Cu catalysts have shown moderate s... The industrially important selective hydrogenation ofα,β-unsaturated aldehydes to allyl alcohol is still challenging to realize using heterogenous hydrogenation catalysts.Supported Cu catalysts have shown moderate selectivity,yet low activity for the reaction,due to the electronic structure of Cu.By anchoring atomically dispersed Pd atoms onto the exposed Cu surface of Cu@CeO2,we report in this work that hydrogen spillover activates the inert metal-oxide interfaces of Cu@CeO2into highly effective and selective catalytic sites for hydrogenation under mild reaction conditions.The as-prepared catalysts exhibit much higher catalytic activity in the selective hydrogenation of acrolein than Cu@CeO2.Comprehensive studies reveal that atomically dispersed Pd species are critical for the activation and homolytic splitting of H2.The activated H atoms easily spill to the Cu-O-Ce interfaces as Cu-Hδ-and interfacial Ce-O-Hδ+ species,making them the active sites for hydrogenation of polar C=O bonds.Moreover,the weak adsorption of allyl alcohol on the Pd and Cu-O-Ce interfacial sites prevents deep hydrogenation,leading to selective hydrogenation of severalα,β-unsaturated aldehydes.Overall,we demonstrate here a synergic effect between single atom alloy and the support for activation of an inert metaloxide interface into selective catalytic sites. 展开更多
关键词 Metal-oxide interface Hydrogen spillover Spillover hydrogenation Selective hydrogenation Single-atom alloy
One-step synthesis of Pt@ZIF-8 catalyst for the selective hydrogenation of 1,4-butynediol to 1,4-butenediol 认领 引用 被引量：19
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作者 Chuang Li Mingming Zhang +3 位作者 Xin Di Dongdong Yin Wenzhen Li Changhai Liang 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 北大核心 2016年第9期1555-1561,共7页
A catalyst consisting of platinum nanoparticles on a ZIF-8 support（Pt@ZIF-8） was synthesized in a straightforward one-step procedure,by adding a nanostructured platinum sol during the formation of ZIF-8 at room temp... A catalyst consisting of platinum nanoparticles on a ZIF-8 support（Pt@ZIF-8） was synthesized in a straightforward one-step procedure,by adding a nanostructured platinum sol during the formation of ZIF-8 at room temperature.Pt@ZIF-8 was highly porous and well crystallized.The Pt nanoparticles were well dispersed within the ZIF-8 support.In the hydrogenation of 1,4-butynediol,Pt@ZIF-8 exhibited high activity,excellent selectivity for 1,4-butenediol of greater than 94%,and reusability.The Pt@ZIF-8 catalyst did not require further additives.The favorable catalytic performance was attributed primarily to the modification of the ZIF-8 support by the platinum nanoparticles. 展开更多
关键词 Platinum sol ZIF-8 One-step synthesis 1 4-Butynediol Selective hydrogenation
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Effect of IB-metal on Ni/SiO2 catalyst for selective hydrogenation of acetylene 认领 引用 被引量：10
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作者 Hua Liu Mengqian Chai +5 位作者 Guangxian Pei Xiaoyan Liu Lin Li Leilei Kang Aiqin Wang Tao Zhang 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 北大核心 2020年第7期1099-1108,共10页
The IB metal(Au,Ag and Cu)alloyed Pd single atom catalysts had been proved to be efficient in promoting the selectivity for hydrogenation of acetylene to ethylene.As a base metal in the same group as Pd,the Ni-based c... The IB metal(Au,Ag and Cu)alloyed Pd single atom catalysts had been proved to be efficient in promoting the selectivity for hydrogenation of acetylene to ethylene.As a base metal in the same group as Pd,the Ni-based catalysts are also active for hydrogenation reactions.Herein,the effects of the IB metals on the Ni/SiO2 catalyst for the selective hydrogenation of acetylene were systematically studied.Different from the Pd/SiO2 catalyst,the monometallic Ni/SiO2 catalyst is not active at low temperatures.The addition of the IB metals to the Ni/SiO2 catalysts can greatly enhance the activity.Besides,the catalytic activity of the AuNix/SiO2 and CuNix/SiO2 catalysts increase with the reduction temperature,while the AgNix/SiO2 catalysts are not sensitive to the pretreatment temperature.The origin of the effect of the different IB metals on the Ni-based catalysts for selective hydrogenation of acetylene is discussed based on the characterizations by XRD,TPR and microcalorimetric measurements. 展开更多
关键词 Acetylene Selective hydrogenation Ethylene Ni IB metals
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Study of the role of alkaline sodium additive in selective hydrogenation of phenol 认领 引用 被引量：10
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作者 Yuzhuo Chen Xiangqian Kong +3 位作者 Shanjun Mao Zhe Wang Yutong Gong Yong Wang 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 北大核心 2019年第10期1516-1524,共9页
The selective hydrogenation of phenol to cyclohexanone is an important process in the chemical industry.However,achieving high selectivity at high conversion rates is highly challenging,particularly under continuous r... The selective hydrogenation of phenol to cyclohexanone is an important process in the chemical industry.However,achieving high selectivity at high conversion rates is highly challenging,particularly under continuous reaction conditions.Here,we found that the presence of Na alkaline additives(NaX,X=CO3^2–,HCO^3–,or OH^–)on Pd/Al2O3 not only promoted the phenol conversion from 8.3%to>99%but also increased the cyclohexanone selectivity from 89%to>97%during the continuous hydrogenation of phenol on a fixed bed reactor.After 1200 h of continuous reaction,no activity or selectivity attenuation was observed and the turnover number was approximately 2.9×10^5.Density functional theory calculations,spectroscopic,and dynamics studies demonstrated that the addition of NaX greatly promoted phenol adsorption and hydrogen activation,thereby improving catalytic activity.Simultaneously,the formation of a“-C=O-Na-”intermediate inhibited the excessive hydrogenation and intermolecular coupling of cyclohexanone,leading to high selectivity. 展开更多
关键词 Cyclohexanone Phenol Alkaline additive Mechanism Selective hydrogenation
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Effect of Lanthanum on Performance of RuB Amorphous Alloy Catalyst for Benzene Selective Hydrogenation 认领 引用 被引量：10
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作者 刘寿长 刘仲毅 +3 位作者 刘艳丽 吴咏梅 王争 朱微娜 《Journal of Rare Earths》 SCIE EI CAS 2006年第4期456-460,共5页
The effect of La on the performance of a supported RuB amorphous alloy catalyst for benzene selective hydrogenation was studied by means of activity and selectivity tests, such as HRTEM, SAED, XPS, and XRD. The result... The effect of La on the performance of a supported RuB amorphous alloy catalyst for benzene selective hydrogenation was studied by means of activity and selectivity tests, such as HRTEM, SAED, XPS, and XRD. The results show that the addition of La to RuB amorphous alloy catalyst can evidently increase the activity and improve the thermal stability of RuB amorphous alloy to refrain its crystallization. The promoting effect of La on the activity of RuB amorphous alloy catalyst is because of the high dispersion of the active components. 展开更多
关键词 benzene selective hydrogenation RuB amorphous alloy catalyst lanthanum rare earths
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Highly selective hydrogenation of furfural to tetrahydrofurfuryl alcohol over MIL-101(Cr)-NH_2 supported Pd catalyst at low temperature 认领 引用 被引量：7
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作者 Dongdong Yin Hangxing Ren +2 位作者 Chuang Li Jinxuan Liu Changhai Liang 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 北大核心 2018年第2期319-326,共8页
An efficient heterogeneous catalyst,Pd@MIL‐101(Cr)‐NH2,is prepared through a direct pathway of anionic exchange followed by hydrogen reduction with amino‐containing MIL‐101as the host matrix.The composite is therm... An efficient heterogeneous catalyst,Pd@MIL‐101(Cr)‐NH2,is prepared through a direct pathway of anionic exchange followed by hydrogen reduction with amino‐containing MIL‐101as the host matrix.The composite is thermally stable up to350°C and the Pd nanoparticles uniformly disperse on the matal organic framework(MOF)support,which are attributed to the presence of the amino groups in the frameworks of MIL‐101(Cr)‐NH2.The selective hydrogenation of biomass‐based furfural to tetrahydrofurfuryl alcohol is investigated by using this multifunctional catalyst Pd@MIL‐101(Cr)‐NH2in water media.A complete hydrogenation of furfural is achieved at a low temperature of40°C with the selectivity of tetrahydrofurfuryl alcohol close to100%.The amine‐functionalized MOF improves the hydrogen bonding interactions between the intermediate furfuryl alcohol and the support,which is conducive for the further hydrogenation of furfuryl alcohol to tetrahydrofurfuryl alcohol in good coordination with the metal sites. 展开更多
关键词 Metal‐organic frameworks Amino functionalization Pd nanoparticle Biomass Selective hydrogenation
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Chemoselective hydrogenation of phenol to cyclohexanol using heterogenized cobalt oxide catalysts 认领 引用 被引量：7
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作者 Zhongzhe Wei Yi Li +2 位作者 Jing Wang Haoran Li Yong Wang 《Chinese Chemical Letters》 SCIE CAS CSCD 2018年第6期815-818,共4页
Cyclohexanol is an important intermediate in the synthesis of Nylon-6 and plasticizers. In this work,cobalt oxide nanoparticles（NPs） supported on porous carbon（Co Ox@CN） were fabricated by one-pot method and the h... Cyclohexanol is an important intermediate in the synthesis of Nylon-6 and plasticizers. In this work,cobalt oxide nanoparticles（NPs） supported on porous carbon（Co Ox@CN） were fabricated by one-pot method and the hybrids could efficiently and selectively hydrogenate phenol to cyclohexanol with a high yield of 98%. The high catalytic performance of Co Ox@CN was associate with the high surface area（340 m2/g） and uniformly dispersed NPs. Furthurmore, by detailed analysing the relationship between catalytic activity and catalysts composition, it clearly indicated that the Co3O4 in Co Ox@CN played an important role for the adsorption and activation of phenol and the in situ gernerated Co was responsible for hydrogen adsorption and dissociation. These findings provide a fundamental insight into the real active sites in hydrogenation of phenol using Co-based catalysts. 展开更多
关键词 Phenol Cyclohexanol Selective hydrogenation Cobalt oxides Metallic cobalt
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Ir nanoclusters confined within hollow MIL-101(Fe)for selective hydrogenation ofα,β-unsaturated aldehyde 认领 引用 被引量：6
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作者 Qinglin Liu Qian Liu +4 位作者 Yurong Chen Yinle Li Hui Su Qinghua Liu Guangqin Li 《Chinese Chemical Letters》 SCIE CAS CSCD 2022年第1期374-377,共4页
Although the selective hydrogenation ofα,β-unsaturated aldehyde to unsaturated alcohol(UOL)is an extremely important transformation,it is still a great challenge to achieve high selectivity to UOL due to thermodynam... Although the selective hydrogenation ofα,β-unsaturated aldehyde to unsaturated alcohol(UOL)is an extremely important transformation,it is still a great challenge to achieve high selectivity to UOL due to thermodynamic favoring of the C=C hydrogenation over the C=O hydrogenation.Herein,we report that iridium nanoclusters(Ir NCs)confined within hollow MIL-101(Fe)expresses satisfied reaction activity(93.9%)and high selectivity(96.2%)for the hydrogenation of cinnamaldehyde(CAL)to cinnamyl alcohol(COL)under 1 bar H;atmosphere and room temperature.The unique hollow structure of MIL-101(Fe)benefits for the fast transport of reactant,ensuring the comparable reaction activity and better recyclability of Ir@MIL-101(Fe)than the counterparts which Ir NCs were on the surface of MIL-101(Fe).Furthermore,The X-ray photoelectron spectroscopy data indicates the electropositive Ir NCs,owing to the electron transfer from Ir to MIL-101(Fe),can interact with oxygen lone pairs,and Fourier transform infrared spectrum shows the Lewis acid sites in MIL-101(Fe)can strongly interact with C=O bond,which contributes to a high selectivity for COL.This work suggests the considerable potential of synergetic effect between hollow MOFs and metal nanoclusters for selective hydrogenation reactions. 展开更多
关键词 Iridium Hollow metal-organic frameworks Selective hydrogenation α β-Unaturated aldehyde Heterogeneous catalysis
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Confinement effect of carbon nanotubes on the product distribution of selective hydrogenation of cinnamaldehyde 认领 引用 被引量：7
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作者 Hongfei Ma Tie Yu +1 位作者 Xiulian Pan Xinhe Bao 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 北大核心 2017年第8期1315-1321,共7页
The catalytic activity of metal catalysts can be modulated by confinement within the channels of carbon nanotubes(CNTs).Here,we show that the product distribution of cinnamaldehyde hydrogenation can be modified by con... The catalytic activity of metal catalysts can be modulated by confinement within the channels of carbon nanotubes(CNTs).Here,we show that the product distribution of cinnamaldehyde hydrogenation can be modified by confinement of Ru nanoparticles in CNTs.A catalyst composed of Ru nanoparticles dispersed on the exterior walls of CNTs gave hydrocinnamaldehyde as product.In contrast,confinement of the Ru nanoparticles within CNT channels facilitated hydrogenation of C=O bonds and complete hydrogenation,and both cinnamyl alcohol and hydrocinnamyl alcohol formed in addition to hydrocinnamaldehyde.High‐resolution transmission electron microscopy,Raman spectroscopy,hydrogen temperature‐programmed reduction,and hydrogen temperature‐programmed desorption were used to investigate the characteristics of the catalysts.The results indicate that the different interactions between the confined Ru nanoparticles and the exterior and interior walls of the CNTs,as well as spatial restriction and enrichment within the narrow channels likely play important roles in modulation of the product distribution. 展开更多
关键词 Carbon nanotubes Confined catalysis Ruthenium Selective hydrogenation Cinnamaldehyde Selectivity modulation
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Unexpectedly selective hydrogenation of phenylacetylene to styrene on titania supported platinum photocatalyst under 385 nm monochromatic light irradiation 认领 引用 被引量：6
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作者 Juhong Lian Yuchao Chai +4 位作者 Yu Qi Xiangyang Guo Naijia Guan Landong Li Fuxiang Zhang 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 北大核心 2020年第4期598-603,共6页
Conversion of alkynes to alkenes by photocatalysis has inspired extensive interest but it is still challenging to obtain both high conversion and selectivity.Here we first demonstrate the photocatalytic conversion of ... Conversion of alkynes to alkenes by photocatalysis has inspired extensive interest but it is still challenging to obtain both high conversion and selectivity.Here we first demonstrate the photocatalytic conversion of phenylacetylene(PLE)to styrene(STE)with both high conversion and selectivity by using the titania(TiO2)supported platinum(Pt)as photocatalyst under 385 nm monochromatic light irradiation.It is demonstrated that the conversion rate of PLE is strongly dependent on the content of Pt cocatalyst loaded on the surface of TiO2.Based on our optimization,the conversion of PLE and the selectivity towards STE on the 1 wt%Pt/TiO2 photocatalyst can unexpectedly reach as high as 92.4%and 91.3%,respectively.The highly selective photocatalytic hydrogenation can well be extended to the conversion of other typical alkynes to alkenes,demonstrating the generality of selective hydrogenation of C≡C over the Pt/TiO2 photocatalyst. 展开更多
关键词 Phenylacetylene Titania Selective Hydrogenation Photocatalysis Cocatalyst
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Enhanced stability of highly-dispersed copper catalyst supported by hierarchically porous carbon for long term selective hydrogenation 认领 引用 被引量：6
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作者 Nian Hu Xiao-Yun Li +7 位作者 Si-Ming Liu Zhao Wang Xiao-Ke He Yue-Xin Hou Yu-Xiang Wang Zhao Deng Li-Hua Chen Bao-Lian Su 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 北大核心 2020年第7期1081-1090,共10页
Copper based catalysts have high potential for the substituent of noble-metal based catalysts as their high selectivity and moderate activity for selective hydrogenation reaction;however,achieving further high catalyt... Copper based catalysts have high potential for the substituent of noble-metal based catalysts as their high selectivity and moderate activity for selective hydrogenation reaction;however,achieving further high catalytic stability is very difficult.In this work,the carbonization process of Cu-based organic frameworks was explored for the synthesis of highly-dispersed Cu supported by hierarchically porous carbon with high catalytic performance for selective hydrogenation of 1,3-butadiene.The porous hierarchy of carbon support and the dispersion of copper nanoparticles can be precisely tuned by controlling the carbonization process.The resultant catalyst carbonized at 600°C exhibits a rather low reaction temperature at 75°C for 100%butadiene conversion with 100%selectivity to butenes,due to its reasonable porous hierarchy and highly-dispersed copper sites.More importantly,unprecedentedly stability of the corresponding Cu catalyst was firstly observed for selective 1,3-butadiene hydrogenation,with both 100%butadiene conversion and 100%butenes selectivity over 120 h of reaction at 75°C.This study verifies that a simply control the carbonization process of metal organic frameworks can be an effective way to obtain Cu-based catalysts with superior catalytic performance for selective hydrogenation reaction. 展开更多
关键词 Hierarchically porous structure Catalyst Cu/C Selective hydrogenation Metal organic frameworks
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Synthesis of carbon-supported Pd/SnO_2 catalyst for highly selective hydrogenation of 2,4-difluoronitrobenzene 认领 引用 被引量：6
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作者 Jia Zhao Lei Ma +2 位作者 Xiao-Liang Xu Feng Feng Xiao-Nian Li 《Chinese Chemical Letters》 SCIE CAS CSCD 2014年第8期1137-1140,共4页
Halogenated anilines have a wide range of applications in the production of pharmaceuticals and agrochemical substances, and thus it is of great importance to develop highly active and selective catalysts for the hydr... Halogenated anilines have a wide range of applications in the production of pharmaceuticals and agrochemical substances, and thus it is of great importance to develop highly active and selective catalysts for the hydrogenation of halogenated nitrobenzenes. We approach this challenge by probing noble metalon-noble metal oxide nanoparticles（NPs） catalysts. Carbon-supported Pd/SnO2catalysts were synthesized by the chemical reduction method, and their catalytic activity was evaluated by the hydrogenation reaction of 2,4-difluoronitrobenzene（DFNB） to the corresponding 2,4-difluoroaniline（DFAN）, showing a remarkable synergistic effect of the Pd and SnO2 NPs. The as-prepared Pd/SnO2/C catalysts were characterized using TEM, XRD, H2 TPD and XPS techniques. Modifications to the electronic structure of the Pd atoms through the use of SnO2 led to the suppression of the hydrogenolysis of the C–F bond and the acceleration of nitrosobenzene（DFNSB） conversion and consequently, resulted in the inhibition of the formation of reactive by-products and may be responsible for the enhancements observed in selectivity. 展开更多
关键词 Tin dioxide Palladium Selective hydrogenation 2.4-Difluoronitrobenzene
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