| 催化合成氯乙酸乙酯 |
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| 引用本文： | 李德江,付和清. 催化合成氯乙酸乙酯[J]. 应用化工, 2004, 0(5) |
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| 作者姓名： | 李德江 付和清 |
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| 作者单位： | 郧阳师范专科学校化学系 湖北丹江口442700(李德江)，华南理工大学化工学院化工研究所 广东广州510640(付和清) |
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| 摘 要： | 以稀土固体超强酸SO2-4/TiO2/La3+为催化剂,氯乙酸与乙醇为原料合成氯乙酸乙酯。研究了氯乙酸与乙醇的摩尔比、催化剂用量、环己烷的用量、反应时间诸因素对产品收率的影响。结果表明:SO2-4/TiO2/La3+是合成氯乙酸乙酯的良好催化剂,适宜的反应条件如下:氯乙酸与乙醇的摩尔比为1∶3.0,催化剂的用量0.8g,环己烷用量15mL,反应2.0h,氯乙酸乙酯的收率可达92.7%。
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| 关 键 词： | 稀土固体超强酸 氯乙酸乙酯 合成 |
Catalytic synthesis of ethyl chloroacetate by rare earth solid super acid |
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| LI De-jiang,FU He-qing. Catalytic synthesis of ethyl chloroacetate by rare earth solid super acid[J]. Applied chemical industry, 2004, 0(5) |
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| Authors: | LI De-jiang FU He-qing |
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| Affiliation: | LI De-jiang~1,FU He-qing~2 |
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| Abstract: | Ethyl chloroacetate was synthesized from chloroacetic acid and ethyl alcohol with solid super acid SO~(2-)_4/TiO_2/La~(3+) as catalyst. The effects of mole ratio of chloroacetic acid to ethyl alcohol, catalyst dose, water-carrying agent (cyclohexane) dose and reaction time on the yield of ester are tested. Experimental results showed that SO~(2-)_4/TiO_2/La~(3+) is an excellent catalyst. The better reaction conditions are as follows: the mole ratio of chloroacetic acid to ethyl alcohol is 1∶3.0, solid super acid SO~(2-)_4/TiO_2/La~(3+) is 0.8 g, cyclohexane is 15 mL, react 2.0 h, the yield of ethyl chloroacetate can reached 92.7%. |
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| Keywords: | solid super acid SO~(2-)_4/TiO_2/La~(3 ) ethyl chloroacetate synthesis |
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