| 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. |
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