苯甲酸催化氧化制苯酚工艺

PROCESS STUDY ON THE CATALYST OXIDATION OF BENZOIC ACID TO PHENOL

对苯甲酸液相催化氧化制苯酚的工艺进行了研究，包括主催化剂与助催化剂配比，催化剂失活后除焦油再利用，苯酚的精制等。确定最佳工艺条件为：镁盐与铜盐的摩尔比为０５∶１～３∶１，平均每小时苯甲酸转化率为２９％，苯酚选择性为９０％。

This paper deals with process for the liquid-phase catalyst oxidation of benzoic acid to phenol,including ratio of catalyst to co-catalyst,removal of tar and refinery of phenol. The most suitable conditions for the reaction are as follows: the molar ratio of Mg to Cu 0 5∶1～3∶1. The results show 29% benzoic acid conversion with 90% phenol selectivity hour/per. The process is simple with a low production cost and bright prospect.