| 第 33 卷第 5 期 |  | Vol. 33 No. 5 | | 2003 年 10 月 | Oct 2003 |
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所属栏目：其它
新型磁性固体酸ZrO_2/Fe_3O_4催化合成尼泊金丁酯 |
| 夏赞成; 易兵(湖南工程学院化学工程系; 湖南湘潭) |
| 摘 要：制备了磁性固体酸催化剂ZrO2 /Fe3O4 ,并催化合成了尼泊金丁酯 ,优化了工艺条件 ,得出优惠工艺条件为 :醇酸摩尔比为 4∶1,催化剂用量为 7% (与对羟基苯甲酸的质量百分数 ) ,回流温度下反应 3h。产品收率达 88.2 % ,催化剂易于通过磁场回收 ,使用寿命较长。 |
| 关键词：磁性固体酸; 催化; 对羟基苯甲酸丁酯 |
| 中图分类号：TQ225.24 文献标识码：A 文章编号：1009-9212(2003)05-0035-02 |
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| The Synthesis of Butyl Nipagin with Novel Magnetic Solid Acid ZrO_2/Fe_2O_3 Catalyst |
| XIA Zan-cheng; etc（Chemical engineering department; Hunan Engineering College; Xiangtan 411101; China） |
| Abstract：Magnetic solid acid catalyst ZrO_2/Fe_3O_4 was prepared ,and was used to synthesize butyl nipagin. Various factors that effected the esterification yield were discussed. The optimum reaction conditions were as follow: alcohol:acid is 4:1(mol),the mass ratio of catalyst to p-hydroxybenzoic acid is 7%, reaction time is 180 min under reluxing temperature. The product yield is up to 88.2%. The catalyst can be easily separated from the reaction system by magnetism ,and its life-length is long. |
| Key words：magnetic solid acid; catalyst butyl p-hydroxyl-benzoate |
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收稿日期：2003-05-13
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