尖晶石型复合氧化物Mg_xCu_(1-x)Al_2O_4上苯酚甲醇烷基化制备邻甲酚  

Mg_xCu_(1-x)Al_2O_4 SPINEL CATALYZED ALKYLATION OF PHENOL WITH METHANOL FOR PRODUCTION OF o-CRESOL

作　　者：于庆勇[1] 俞晓玉[1] 徐春辉[1] 徐占林[1] 

机构地区：[1]吉林师范大学化学学院,吉林四平136000

出　　处：《精细石油化工》2009年第2期12-14,共3页Speciality Petrochemicals

基　　金：吉林省教育宁“十一五”科学技术研究项目(吉教合字[2007]第151号)

摘　　要：采用共沉淀法制备了Mg_xCu_(1-x)Al_2O_4系列催化剂,并用XRD技术对其结构进行表征,结果表明,不同Cu取代的Mg_xCu_(1-x)Al_2O_4试样具有相同的尖晶石晶体结构,对苯酚甲醇烷基化制备邻甲酚有较高的催化效果。当反应温度达到500℃时,Mg_(0.5)Cu_(0.5)Al_2O_4催化甲醇烷基化效果最好,邻甲酚收率最高,达90.27%。A series of MgAl2O4 spinels were prepared by a co-precipitation method, characterized with XRD and studied in the alkylation of phenol with methanol for the production of o-cresol. The results showed that Cu substitution for Mg did not change the structure of the spinel; the spinels gave excel- lent performance in the reaction. At 500℃, Mg0.5Cu0.5Al2O4 exhibited the best results, with 90.27% yield of o-cresol.

关 键 词：MgxCu1-xAl2O4 尖晶石 苯酚烷基化 邻甲酚 

分 类 号：TQ426.8[化学工程] O643.3[理学—物理化学]