| 混合金属氧化物固载杂多酸催化剂的制备及其催化性能研究 |
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| 引用本文： | 余新武,曹桂能,梁伟. 混合金属氧化物固载杂多酸催化剂的制备及其催化性能研究[J]. 工业催化, 2004, 12(4): 31-34 |
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| 作者姓名： | 余新武 曹桂能 梁伟 |
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| 作者单位： | 湖北师范学院化学与环境工程系,湖北,黄石,435002;湖北师范学院化学与环境工程系,湖北,黄石,435002;湖北师范学院化学与环境工程系,湖北,黄石,435002 |
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| 基金项目： | 湖北省教育厅重点科研项目 (2 0 0 1A0 60 0 9) |
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| 摘 要： | 采用微波法制备了混合金属氧化物固载的杂多酸(HPA)催化剂HPA/ TiO2-SnO2，通过TEM、IR和TG-DTA等测试手段对催化剂进行了表征。在马来酸和异戊醇合成马来酸二异戊酯的反应中，考察了催化剂的催化活性以及影响酯化反应的相关因素。结果表明，最适宜的反应条件为：醇酸摩尔比 6∶1 (马来酸用量为0.05 mol, 异戊醇用量为0.30 mol)，催化剂用量 0.75 g，回流分水50 min。马来酸二异戊酯的收率＞91%。
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| 关 键 词： | HPA/ TiO2-SnO2 催化剂 马来酸二异戊酯 催化合成杂多酸 |
| 文章编号： | 1008-1143(2004)03-0031-04 |
| 修稿时间： | 2003-10-16 |
A heteropolyacid catalyst supported on metal oxides and its activity for esterification |
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| YU Xin-wu,CAO Gui-neng,LIANG Wei. A heteropolyacid catalyst supported on metal oxides and its activity for esterification[J]. Industrial Catalysis, 2004, 12(4): 31-34 |
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| Authors: | YU Xin-wu CAO Gui-neng LIANG Wei |
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| Affiliation: | Department of Chemistry and Environmental Engineering, Hubei Normal University;, Hubei Huangshi 435002,China |
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| Abstract: | A new heteropolyacid (HPA)/TiO_2-SnO_2 solid acid catalyst was prepared under microwave and characterized by TEM, TG-DTA and IR. Activity of the catalyst for synthesis of diisopentyl maleate from isopentanol and maleic acid and various factors influencing the esterification were investigated. The catalyst exhibited high activity for synthesis of diisopentyl maleate under mild temperature. The most favorable conditions were as follows, with ester yield of 91%:n(maleic acid)=0.05 mol,(n(isopentanol))=0.30 mol,m(catalyst)=0.75 g and reflux time for water segration =50 min. |
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| Keywords: | HPA/TiO_2-SnO_2 heteropolyacid catalyst diisopentyl maleate synthesis |
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