专利详情

专利名称	Method for producing cresol from phenol and methanol via gas phase alkylation
申请号	US201214416209	专利类型	US
公开（公告）号	US9212116(B2)	公开（授权）日	2015.12.15
申请（专利权）人	中国科学院大连化学物理研究所	发明（设计）人	Wang Kunyuan;Xu Yunpeng;Liu Zhongmin
主分类号	C07C37/11	IPC主分类号	C07C37/11;C07C37/16;B01J29/00;B01J29/40;B01J29/70
专利有效期	Method for producing cresol from phenol and methanol via gas phase alkylation 至Method for producing cresol from phenol and methanol via gas phase alkylation	法律状态
说明书摘要	The present invention relates to a method for producing cresol from phenol and methanol via gas phase alkylation, in which phenol and methanol are preheated and mixed with diluent gas, then the mixture continuously go through a catalyst bed comprising the catalyst for alkylation of phenol with methanol, to produce cresol by gas phase reaction at the reaction temperature of 200?500° C. and the weight hourly space velocity of 0.5?20 h?1. The catalyst for alkylation of phenol with methanol is obtained by modification steps and using ZSM-5 zeolite, MCM-22 zeolite or Beta zeolite as an active composition. Using phenol and methanol as feedstock, the cresol selectivity can reach to 90%, and the p-cresol selectivity can reach to 58%. The catalyst is environmental friendly and non-corrosive to the equipment with a good stability and a broad prospect in industrial application.