Fe_2(SO_4)_3·xH_2O催化制备尼泊金酯 |
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引用本文: | 刘勇,成本诚.Fe_2(SO_4)_3·xH_2O催化制备尼泊金酯[J].精细化工,1994,11(1):7-10. |
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作者姓名: | 刘勇 成本诚 |
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作者单位: | 中南工业大学化学系,深圳广海实业有限公司工作 |
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基金项目: | 湖南省食品办公室的资助 |
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摘 要: | 研究了以Fe_2(SO_4·xH_2O为固体催化剂,由对羟基苯甲酸和丁醇制备对羟基苯甲酸丁酯,讨论了催化酯化的各种影响因素。与硫酸催化相比,Fe_2(SO_4)_3·xH_2O用量少、反应时间短,产率较高而废水减少。此法同样可制备对羟基苯甲酸丙酯,但对于用沸点低的甲醇和乙醇制备相应的酯则产率较低。
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关 键 词: | 对羟基 苯甲酸酯 催化剂 催化 酯化 |
PREPARATION OF NIPAGIN ESTERS WITH CATALYST FE_2(SO_4)_3·xH_2O |
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Abstract: | Abstract Fe_2(SO_4)_3·xH_2O used as solid catalyst for the preparation of butyl P-hydroxyben-zoate with p-hydroxybenzoic acid and butanolbas been studied,Various factors that effectthe esterification have been discussed.WithFe_2(SO_4)_3·xH_2O catalyst, the results ob-tained show that,comparisonwith sulphuric acid ,the new method has the advantages of shorter reaction time,less amotunt of catalyst,higher yield and few waster. Propyl p-hydrox-ybenzoate also can be prepared in the same way. But it is not fit for methyl, ethyl esters. |
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