稀土氧化物可用作催化剂,如用于烷烃的裂解、烯烃的异构化、醇类脱水等.但稀土氧化物作为酯化催化剂迄今未见报道.我们在研究酯化催化时,选择了邻苯二甲酸二辛酯的合成.它是一种优良增塑剂.为了提高产品质量,近年来已由非酸催化代替了老法酸催化.其中用金属氧化物(如ZnO,SnO等)做催化剂已有报道.我们参照他们的实验方法,用稀土氧化物作催化剂进行了研究. Rare earth oxides can be used as catalysts, such as cracking of alkanes, isomerization of olefins, dehydration of alcohols, etc. However, rare earth oxides as esterification catalysts have not been reported until now.We studied the esterification catalysis, Dioctyl phthalate is an excellent plasticizer. In order to improve product quality, non-acid catalysis has replaced old-law acid catalysis in recent years, in which metal oxides such as ZnO and SnO are used Catalysts have been reported, and with reference to their experimental methods, we have investigated the use of rare earth oxides as catalysts.