| 稀土复合固体酸SO_4~(2-)/TiO_2/La~(3+)催化合成马来酸二辛酯 |
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| 引用本文： | 华平,李建华,施磊.稀土复合固体酸SO_4~(2-)/TiO_2/La~(3+)催化合成马来酸二辛酯[J].精细化工中间体,2002(6). |
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| 作者姓名： | 华平 李建华 施磊 |
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| 作者单位： | 南通工学院化工系，南通工学院化工系，南通工学院化工系 江苏，南通，226007，江苏，南通，226007，江苏，南通，226007 |
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| 摘 要： | 研究了固体超强酸SO2 - 4/TiO2 /La3+用于合成马来酸二辛酯。并与硫酸对甲苯磺酸的催化效果比较。考察了Ti/La物质量比、硫酸浓度、焙烧温度对催化剂活性和反应时间对酯化反应的影响。结果表明 :当Ti/La物质量比为 6∶1、浸渍液硫酸浓度为 1 8mol/L、在5 5 0℃下焙烧时具有最高的催化活性 ,用于马来酸酐和正辛醇的酯化反应可得无色透明的酯化产物 ,3h内酯化率达 96 9%。
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| 关 键 词： | 固体超强酸 催化剂 马来酸二辛酯 |
Synthesis of Dioctyl Meleate by Solid Super Acid SO_4~(2-)/TiO_2/La~(3+) Catalyst. |
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| HUA Ping,et at..Synthesis of Dioctyl Meleate by Solid Super Acid SO_4~(2-)/TiO_2/La~(3+) Catalyst.[J].Fine Chemical Intermediates,2002(6). |
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| Authors: | HUA Ping et at |
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| Abstract: | Solid super acid catalyst SO 2- 4/TiO 2/La 3+ was prepared and used in synthesizing dioctyl maleate, in comparison with sulfur acid and p-toluene sulfonic acid. The effects of prepared conditions such as the sulfur acid concentration, the temperature and time of bakring on catalytic activity and reaction time on esterifi-calion. The results shew that the catalyst had splendid catalytic activity for the synthesis of dioctyl maleale, immersing 10 hours in 1.8 mol/L. sulfur acid solution, baking 3 hours at 550℃, the yield of dioctyl meleate was over 96.9%. |
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| Keywords: | solid super acid dioclyl melate esteralificalion |
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