Oxidative Methylation of Toluene with Methane over Basic Zeolite Catalysts Promoted with Alkali Metal Bromides and Alkali Metal Oxides

作     者：Ling Ping ZHOU Wei LI Ke Yi TAO Xuan Wen LI He Xuan LI College of Chemistry and Molecular Engineering, Peking University, Beijing 100871 Department of Chemistry, Nankai University, Tianjin 300071 

作者机构：Coll. of Chem. and Molec. Eng. Peking University Beijing 100871 China Department of Chemistry Nankai University Tianjin 300071 China 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2000年第11卷第9期

页      面：827-830页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070303[理学-有机化学] 0703[理学-化学] 

基　　金：The project was supported by the National Natural Science Foundation of China !(GrantNo.29803005) China Postdoctoral Science 

主　　题：styrene methane oxidative methylation alkali-metal oxides alkali-metal bromides 

摘      要：The catalytic effects for the oxidative methylation of toluene with methane over the basic zeolite catalysts prepared by promoting KY, KX, KM, KZSM-5 or KP with alkali-metal bromides and alkali-metal oxides have been investigated comparatively. The alkali-metal bromides promoted substrates are more effective than the alkali-metal oxides promoted systems. Moreover, the NaBr promoted systems are more active than KBr promoted systems. The most effective catalytic system (8wt%NaBr)/KZSM-5 gave a toluene conversion as high as 76.3% and a total C-8 selectivity of 76.4% (styrene/ethylbenzene=9.76) resulting in a total C-8 yield of 58.3%.