催化合成邻苯二甲酸二辛酯的固体酸制备条件优化

摘要采用自制的固体酸SO42-/SnO2为催化剂合成邻苯二甲酸二辛酯(DOP),通过试验分别考察浸泡硫酸浓度、颗粒度、活化温度和活化时间等因素对催化剂活性的影响。试验表明:在固体酸SO42-/SnO2催化DOP的合成中,催化剂适宜制备工艺条件是:浸泡硫酸浓度3.2 mol/L、颗粒度130目、活化温度500℃和活化时间5.0 h,DOP产率可达95%以上。固体酸SO42-/SnO2催化剂具有催化活性高、可多次重复使用、产物易纯化分离和产品色泽浅等优点,有望代替传统浓硫酸作催化剂用于DOP的合成。

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	陈玉成
	周雪琴
	刘东志

关键词：固体酸催化剂制备优化邻苯二甲酸二辛酯(DOP)

Abstract： Dioctyl phthalate(DOP) was synthesized by self-made catalyst of solid acid SO~(2-)_4/SnO_2.The influence,such as the concentration of vitriol acid,graininess of catalyst, the temperature and time of activation,etc,on the activity of catalyst were analyzed.The results showed the best technical operation conditions are as follows: when vitriol oil is 3.2 mol/L,130 mesh of graininess,temperature of activation 500 ℃,time of activation 5 h,the DOP productivity can be above 95%.Because SO~(2-)_4/SnO_2,as the catalyst,has characteristic of high catalytic activity,long-term reusability,product easily separated with better color and luster,it has some advantages of taking the place of oil of vitriol to catalyze the synthesis of DOP.

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Received 2009-09-15; published 2009-09-15

引用本文:

陈玉成;周雪琴;刘东志;.催化合成邻苯二甲酸二辛酯的固体酸制备条件优化[J]. 化学工业与工程, 2009,26(5): 381-385

CHEN Yu-cheng~.Optimization of Preparation Conditions for Solid Acid SO~(2-)_4/SnO_2 in the Synthesis of DOP[J]. Chemcial Industry and Engineering, 2009,26(5): 381-385

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