Optimization of reaction conditions on methylation of toluene with methanol

PETR 64

Yan Zhao, zy5949038@sina.com1, Xinwen Guo, guoxw@dlut.edu.cn2, Xiangsheng Wang2, and Min Liu, lium@dlut.edu.cn2. (1) Department of Catalysis Chemistry and Engineering, Dalian University of Technology, No 158 Zhongshan Road, Dalian, 116012, China, (2) State Key Laboratory of Fine Chemicals, Dalian University of Technology, P.O. Box 39, 158 Zhongshan Road, Dalian, 116012, China
Shape-selective methylation of toluene with methanol was carried out in a fixed bed reactor over modified Nano-scale HZSM-5 (Si/Al=26.0) zeolite catalysts, and the effect of the reaction conditions on the catalytic properties was investigated by orthogonal tests contained three factors and three levels, in which three factors consist of temperature, H2O/ (T+M) and H2/ (T+M). The temperature varied from 400 °C to 460 °C, the toluene: methanol ( molar ratio )is 2:1, H2O/ (T+M) 4 to 10, and H2/ (T+M) 2 to 8.The results of orthogonal tests indicate that reaction conditions are of importance to the methylation of toluene.

Keywords: methylation; toluene; methanol; modified ZSM-5;

orthogonal tests.

 

Zeolite Catalysis for Green Chemistry in Synthesis of Chemicals and Fuels
1:20 PM-5:30 PM, Monday, April 7, 2008 Morial Convention Center -- Rm. 346, Oral

Division of Petroleum Chemistry

The 235th ACS National Meeting, New Orleans, LA, April 6-10, 2008