含水硫酸锆作为酯化催化剂的研究  

Zr(SO_4)_2·4H_2O AS CATALYST FOR ESTERIFICATION

作　　者：李葆[1] 战永复[1] 李连忠[1] 张晓梅[1] 

机构地区：[1]吉林师范学院化学系

出　　处：《Chinese Journal of Catalysis》1989年第3期331-333,共3页催化学报（英文）

摘　　要：以含水硫酸盐为酯化催化剂早已有报道,但酯化速度远不及浓硫酸.我们在研究二氧化钛、二氧化锆催化酯化反应时,发现经1mol/1H_2SO_4处理过的二氧化锆,其表面上含有硫酸锆,并且催化酯化的速度相当快.所以我们对含水硫酸锆的催化酯化性能进行了一系列的研究. 所用原料冰醋酸含量98％,苯酐99％,工业乙醇、正丁醇和2-乙基已醇均为95％以上,正丙醇、异丙醇、异丁醇和异成醇均为化学试剂.It was found that the activity of Zr(SO4)2·4H2O catalyst for the esterifi-cation of alcohol with organic acid was commensurate with that of concentrated H2SO4, and no corrosion and pollution problems encountered in the former case. The esterification of 2-ethylhexanol with phthalic anhydride could be catalyzed by Zr(SO4)2·4H2O at a lower temperature (80-130℃) as compared with that catalyzed by ZnO, SnO and rare-earth oxides at above 200℃. The catalytic activity of Zr(SQ4)2·4H2O was stable, it could be used for at least sixteen times without loss of its activity.

关 键 词：硫酸锆水合物 酯化催化剂 醋酸酯 

分 类 号：TQ225.241[化学工程—有机化工]