太原理工大学学报Issue(1)：1-5,10,6.DOI:10.16355/j.cnki.issn1007-9432tyut.2015.01.001
Cs/B 催化剂载体对甲苯甲醇侧链烷基化性能的影响
The Effect of Different Carrier Supported Cs and B Catalysts on Catalytic Performances for Side_chain Alkylation of Toluene and Methanol
摘要
Abstract
Ordered mesoporous carbon supported Cs and B catalysts (CsB/OMC) were pre_pared by impregnation of Cs and B components on OMC carrier ,which was synthesized by a two_step method of soft template using resorcinol and formaldehyde as carbon precursor ,triblock co_polymer Pluronic F127 as template .The catalytic performances were investigated and compared for side chain alkylation of toluene with methanol over the different carriers modified catalysts . The catalysts were characterized by X_ray diffraction (XRD) ,nitrogen adsorption_desorption iso_therm ,transmission electron microscopy (TEM ) ,temperature programmed desorption of CO2 (CO2_TPD) and temperature programmed desorption of NH3 (NH3_TPD) .The catalytic perform_ances and characterization results of different carriers modified catalysts were compared .It reveals that catalytic activity of side chain alkylation decreases in the order CsB/OMC ,CsB/MCM_41 , CsB/AC ,CsB/ZSM_5 ,and the yield of ethylbenzene and styrene (YSTY+ EB ) reaches 34.9% over the CsB/OMC .The weak base sites can help improve the side chain alkylation catalytic activity , and the high styrene selectivity requires coordination of appropriate weak acid and weak_medium base sites .关键词
侧链烷基化/甲苯/甲醇/有序介孔碳/载体Key words
side chain alkylation/toluene/methanol/ordered mesoporous carbon/catalyst carriers分类
化学化工引用本文复制引用
田晓龙,王斌,栾春晖,黄伟..Cs/B 催化剂载体对甲苯甲醇侧链烷基化性能的影响[J].太原理工大学学报,2015,(1):1-5,10,6.基金项目
国家自然科学基金重点资助项目合成气高效转化集成工艺及其关键科学与技术问题的研究（21336006）；太原理工大学青年基金（2013Z023）；太原理工大学引进人才基金 （）
