甲醛与二甲苯合成二(二甲苯基)甲烷的研究——缩合反应催化剂  

Catalysts for condensation of formaldehyde with xylene to form dixylene methane

作　　者：陈声宗[1] 陈蕊[1] 张正奇[1] 李文生[1] 彭金生 

机构地区：[1]湖南大学化学化工学院

出　　处：《天然气化工—C1化学与化工》1998年第5期29-31,共3页Natural Gas Chemical Industry

基　　金：湖南省科委资助项目

摘　　要：研究了硫酸、苯基磺酸、杂多酸、分子筛等９种催化剂对甲醛与二甲苯缩合反应的催化性能。结果表明，浓硫酸和苯基磺酸具有较高的催化活性，而且单位硫酸的产品产率高。对浓硫酸催化体系的组成、再生方法也进行了探索。The catalytical characteristics of nine catalysts, such as sulfuric acid, benzene sulfonic acid, heteropolyacids and molecular sieve, etc., are studied for condensation of formaldehyde with xylene.The results show that the concentrated sulfuric acid and benzene sulfonic acid have better activities, and a higher product yield is obtained by using the concentrated sulfuric acid as catalyst.The composition of the catalysis system containing concentrated sulfuric acid and its regeneration method are also investigated.

关 键 词：甲醛 二甲苯 DXM 硫酸 缩合反应 催化剂 

分 类 号：TQ241.15[化学工程—有机化工]