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A Novel Way to Prepareγ-A1_2O_3 Supported SO_42-/ZrO_2 Solid Superacid Catalysts for n-Butane Isomerization 认领 引用
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作者 Ting LEI Yi TANG +2 位作者 Wei Ming HUA Jin Suo XU Zi GAO 《Chinese Chemical Letters》 SCIE CAS 2000年第1期89-92,共4页
Highly active solid superacid catalysts for n-butane isomerization, SZ/A1_2O_3-P, were prepared by supporting SO-(4-2)/ZrO2, (SZ) on y-A1_2O_3 carrier using a precipitation method. The activities of some catalysts wer... Highly active solid superacid catalysts for n-butane isomerization, SZ/A1_2O_3-P, were prepared by supporting SO-(4-2)/ZrO2, (SZ) on y-A1_2O_3 carrier using a precipitation method. The activities of some catalysts were enhanced significantly j The activity of the most active sample. 60%SZ/Al_2O3-P, was even about 2 times more active than that of the SZ catalyst. 展开更多
关键词 SO_42-/ZrO_2 n-Butane Isomerization,γ-A1_2O_3 supported superacid catalysts.
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Preparation of SO_42-/TiO_2-MoO_3 Solid Superacid and Its Catalytic Activity in Acetalation and Ketalation 认领 引用 被引量:7
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作者 杨水金 梁永光 +1 位作者 余协卿 孙聚堂 《Chinese Journal of Chemical Engineering》 SCIE EI CAS 2005年第1期51-55,共5页
SO4^2-/TiO2-MoO3, a novel solid superacid, has been prepared and its catalytic activity at different synthetic conditions was examined with esterification of n-butanoic acid and n-butyl alcohol as probing reaction.The... SO4^2-/TiO2-MoO3, a novel solid superacid, has been prepared and its catalytic activity at different synthetic conditions was examined with esterification of n-butanoic acid and n-butyl alcohol as probing reaction.The optimum conditions were also found, that is, the mass ratio of MoO3 used in the compound is 25%, the calcination temperature 450℃, and the soaked consistency of H2SO4 is 0.5mol.L^-1. Then it was applied in the catalytic synthesis of six similar important ketals and acetals as catalyst and revealed high catalytic activity. Under the condition that the molar ratio of aldehyde/ketone to glycol was 1:1.5, the mass ratio of the catalyst to the reactants was 0.5% and the reaction time 1.0 h, the yield of ketals and acetals reached up to 63.2%. The catalyst can be easily recovered and reused. 展开更多
关键词 SO_42-/TiO_2-MoO_3 solid superacid acetalation katalation
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Preparation of SO_42-/TiO_2-La_2O_3 solid superacid and its catalytic activities in acetalation and ketalation 认领 引用 被引量:4
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作者 YANG Shui-jin BAI Ai-min SUN Ju-tang 《Journal of Zhejiang University-SCIENCE B》 EI CAS 2006年第7期553-558,共6页
SO4^2- / TiO2-La2O3, a novel solid superacid, was prepared and its catalytic activities at different synthetic conditions are discussed with esterification of n-butanoic acid and n-butyl alcohol as probing reaction. T... SO4^2- / TiO2-La2O3, a novel solid superacid, was prepared and its catalytic activities at different synthetic conditions are discussed with esterification of n-butanoic acid and n-butyl alcohol as probing reaction. The optimum conditions have also been found, mole ratio of n(La^3+):n(Ti^4+) is 1:34, the soaked consistency of H2SO4 is 0.8 tool/L, the soaked time of HESO4 is 24 h, the calcining temperature is 480 ℃, the calcining time is 3 h. Then it was applied in the catalytic synthesis often important ketals and acetals as catalyst and revealed high catalytic activity. Under these conditions on which the molar ratio of aldehyde/ketone to glycol is l: 1.5, the mass ratio of the catalyst used in the reactants is 0.5%, and the reaction time is 1.0 h, the yields of ketals and acetals can reach 41.4%-95.8%. 展开更多
关键词 SO4^2-/ TiO2-La2O3 Rare earth Solid superacid Catalysis
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An efficient synthesis of 2,2-bis(1H-indol-3-yl)-2H-acenaphthen-1-one catalyzed by recyclable solid superacid SO_42-/TiO_2 under grinding condition 认领 引用 被引量:2
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作者 Guo Liang Feng 《Chinese Chemical Letters》 SCIE CAS 2010年第9期1057-1061,共5页
An efficient synthesis of symmetrical 2,2-bis(1H-indol-3-yl)-2H-acenaphthen-1-one is achieved via a reaction of acenaphthe-nequinone and indoles catalyzed by solid superacid SO4^2-/TiO2 under solvent-free conditions... An efficient synthesis of symmetrical 2,2-bis(1H-indol-3-yl)-2H-acenaphthen-1-one is achieved via a reaction of acenaphthe-nequinone and indoles catalyzed by solid superacid SO4^2-/TiO2 under solvent-free conditions at room temperature by grinding, which provides an efficient route to the synthesis of symmetrical 2,2-bis(1H-indol-3-yl)-2H-acenaphthen-1-one.This procedure offers several advantages including solvent-free conditions,excellent yields of products,simple work-up as well as reuse of catalysts which makes it a useful and attractive protocol for the synthesis of these compounds. 展开更多
关键词 Acenaphthenequinone Indole Solid superacid SO4^2-/TiO2 2,2-Bis(1H-indol-3-yl)-2H-acenaphthen-1-one
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Preparation,characterization and catalytic properties of S_2O_82-/ZrO_2-CeO_2 solid superacid catalyst 认领 引用 被引量:34
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作者 樊国栋 沈茂 +1 位作者 张昭 贾发瑞 《Journal of Rare Earths》 SCIE EI CAS 2009年第3期437-442,共6页
A novel solid superacid catalyst S2O8^2-/ZrO2-CeO2 was prepared by a coprecipitation method and characterized by means of XRD FTIR, BET, TEM and DSC/TG analysis methods. The results indicated that incorporation of app... A novel solid superacid catalyst S2O8^2-/ZrO2-CeO2 was prepared by a coprecipitation method and characterized by means of XRD FTIR, BET, TEM and DSC/TG analysis methods. The results indicated that incorporation of appropriate amounts of Ce into the catalyst was beneficial to the formation of sole tetragonal ZrO2 and effectively prevented from the formation of monoclinic ZrO〉 and restrained the loss of sulfated species. XRD revealed the presence of tetragonal Ce0.16Zr0.84O2phase in the case of S2O8^2-/ZrO2-CeO2 calcined above 500 ℃. Catalytic activities of S2O8^2-/ZrO2-CeO2 for the esterification of lactic acid with n-butanol was studied. The results showed that the optimum conditions were as follows: calcination temperature of the catalyst 600 ℃, n(lactic acid):n(n-butyl alcohol)=1.0:3.0, w(S2O8^2-/ZrO2- CeO2)=12.0%, reaction temperature 145 ℃, and reaction time 2 h. The esterification efficiency of lactic acid was about 96.6%. 展开更多
关键词 solid superacid catalyst S2O8^2-/ZrO2-CeO2 n-butyl lactate esterification rare earths
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SO_42-/TiO_2-SnO_2固体超强酸催化合成乙氧喹的研究 认领 引用 被引量:5
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作者 高根之 李言信 +1 位作者 袁波 裴保健 《曲阜师范大学学报(自然科学版)》 CAS 2006年第4期95-98,共4页
以对氨基苯乙醚和丙酮为原料在SO24-/TiO2-SnO2固体超强酸催化作用下,通过Michael加成合成了乙氧喹啉;并分别采用固定床、常压流动床、高压流动床对其合成工艺、反应条件进行了研究和探讨.实验结果表明:采用较高压力下的流动床催化在反... 以对氨基苯乙醚和丙酮为原料在SO24-/TiO2-SnO2固体超强酸催化作用下,通过Michael加成合成了乙氧喹啉;并分别采用固定床、常压流动床、高压流动床对其合成工艺、反应条件进行了研究和探讨.实验结果表明:采用较高压力下的流动床催化在反应温度为200℃,反应时间为10 h,催化剂的用量为5%条件下催化效果较好,最高催化产率为48.8%.该合成工艺应用固体超强酸催化剂具有较高的催化活性、催化速率快、化学稳定性好、无环境污染,是工业生产乙氧喹较理想方法,具有良好的工业生产前景. 展开更多
关键词 SO4^2-/TiO2-SnO2固体超强酸 乙氧喹 固定床 流动床
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固体酸SO_42-/TiO_2-Al_2O_3-SnO_2催化合成氯乙酸四甘醇双酯 认领 引用 被引量:4
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作者 牛梅菊 窦建民 贺媛 《精细化工》 CAS 北大核心 2004年第10期798-800,共3页
以固体酸SO2-4/TiO2 Al2O3 SnO2为催化剂,氯乙酸和四甘醇为原料催化合成了氯乙酸四甘醇双酯。经实验确定的最佳反应条件为:n(氯乙酸).Mn(四甘醇)=2 5,催化剂和带水剂用量分别为反应物总质量的5%和10%,反应时间2 5h,醇的转化率达97 02%,... 以固体酸SO2-4/TiO2 Al2O3 SnO2为催化剂,氯乙酸和四甘醇为原料催化合成了氯乙酸四甘醇双酯。经实验确定的最佳反应条件为:n(氯乙酸).Mn(四甘醇)=2 5,催化剂和带水剂用量分别为反应物总质量的5%和10%,反应时间2 5h,醇的转化率达97 02%,产品收率为81 87%,产品质量分数>97%,催化剂重复使用10次,催化活性基本不变。 展开更多
关键词 固体超强酸SO4^2-/TiO2-Al2O3-SnO2 氯乙酸四甘醇双酯 酯化反应
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固体超强酸SO_42-/TiO_2-Al_2O_3-SnO_2催化合成DBS 认领 引用 被引量:1
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作者 牛梅菊 高太明 尹汉东 《塑料工业》 CAS 北大核心 2004年第11期11-12,48,共2页
以固体超强酸SO42 -/TiO2 Al2 O3 SnO2 为催化剂、葵二酸和正丁醇为原料合成了癸二酸二丁酯 (DBS)。研究了反应时间、醇酸物质的量比、催化剂用量等对酯化率的影响。结果表明 :最佳反应条件为以 0 0 5mol葵二酸为基准 ,n (酸 )∶n (醇 )... 以固体超强酸SO42 -/TiO2 Al2 O3 SnO2 为催化剂、葵二酸和正丁醇为原料合成了癸二酸二丁酯 (DBS)。研究了反应时间、醇酸物质的量比、催化剂用量等对酯化率的影响。结果表明 :最佳反应条件为以 0 0 5mol葵二酸为基准 ,n (酸 )∶n (醇 ) =1∶4,催化剂 0 5g ,反应时间 3 5h ,此时酯化率达 97 5 % ,产品质量分数大于 98% ;催化剂重复使用 6次后 。 展开更多
关键词 固体超强酸SO4^2-/TiO2-Al2O3-SnO2 催化剂 葵二酸 正丁醇 合成 癸二酸二丁酯 硫酸根 氧化钛 氧化锡
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固体超强酸SO_42-/TiO_2-Al_2O_3-SnO_2 催化合成苯乙酸乙酯 认领 引用 被引量:2
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作者 郭海福 郝东升 《肇庆学院学报》 2001年第2期36-38,共3页
本文以固体超强酸SO4~2-/TiO2-Al2O3-SnO2为催化剂,苯乙酸和乙醇为原料合成了苯乙酸乙酯,并 对催化剂、原料配比和反应时间等酯化反应的影响因素进行了详尽讨论。
关键词 固体超强酸催化剂 SO4^2-/TiO2-Al2O3-SnO2 催化合成 苯乙酸乙酯 酯化反应 原料配比 香料
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SO_42-/TiO_2-SnO_2催化剂的制备和表征 认领 引用
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作者 武永军 吴丽 +1 位作者 卓馨 刘超 《湘南学院学报》 2018年第2期35-37,共3页
以硫酸钛和四氯化锡制备SO_42-/TiO_2-SnO_2催化剂,对SO_42-/TiO_2-SnO_2进行了红外、电镜扫描和X衍射等表征.分析表明,在TiO_2-SnO_2中,SnO_2以无定形方式分散在TiO_2表面,负载SO_42-后,SO_42-/TiO_2-SnO_2催化剂的颗粒更... 以硫酸钛和四氯化锡制备SO_42-/TiO_2-SnO_2催化剂,对SO_42-/TiO_2-SnO_2进行了红外、电镜扫描和X衍射等表征.分析表明,在TiO_2-SnO_2中,SnO_2以无定形方式分散在TiO_2表面,负载SO_42-后,SO_42-/TiO_2-SnO_2催化剂的颗粒更加细化,比表面积进一步增大,形成更多的酸中心,酸性增强,催化活性较佳. 展开更多
关键词 固体超强酸 SO4^2-/TiO2-SnO2 表征
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S0_42-/TiO_2-A1_20_3-Sn0_2固体超强酸的制备及其催化合成马来酸二正戊酯 认领 引用
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作者 邓启玮 《杭州化工》 2002年第1期29-30,33,共2页
制备了酸强度为-14.52的SO_42-TiO_2-A1_2O_3-SnO_2固体超强酸,考察了浸渍液H_2SO_4的浓度、金属原子配比、焙烧时间对其酸强度的影响。该催化剂催化合成马来酸二正戊酯,具有很好的催化性能。
关键词 固体超强酸 SO4^2-/TiO2-Al2O3-SnO2 酸强度 制备 马来酸二正戊酯 催化合成
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丙酸正丁酯绿色合成工艺中固体酸催化剂研制 认领 引用 被引量:10
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作者 杨蕾 蒋益林 +2 位作者 王鹏 王进福 周德瑞 《哈尔滨工业大学学报》 EI CAS 北大核心 2003年第3期351-354,共4页
针对目前酯化工艺过程中存在的环境污染问题 ,以丙酸正丁酯催化合成为例 ,对酯化过程清洁生产工艺中固体酸催化剂的制备进行了研究 .制备了SO42 -/TiO2 固体超强酸催化剂 ,讨论了各种制备条件对该催化剂的丙酸正丁酯合成催化活性的影响 ... 针对目前酯化工艺过程中存在的环境污染问题 ,以丙酸正丁酯催化合成为例 ,对酯化过程清洁生产工艺中固体酸催化剂的制备进行了研究 .制备了SO42 -/TiO2 固体超强酸催化剂 ,讨论了各种制备条件对该催化剂的丙酸正丁酯合成催化活性的影响 ,采用TG/DTA、FTIR、XRD等仪器分析手段对催化剂结构进行了表征 ,实验结果表明 ,SO42 -/TiO2 固体超强酸催化剂具有很好的催化活性和选择性 ,且无腐蚀、反应时间短、后处理简单。 展开更多
关键词 SO^2-4/TiO2 固体超强酸 催化剂 酯化 丙酸正丁酯
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