Isolated zinc in mordenite stabilizing carbonylation of dimethyl ether to methyl acetate |
| |
Authors: | Zhitao Zhang Na Zhao Kui Ma Qingpeng Cheng Jing Zhang Lirong Zheng Ye Tian Xingang Li |
| |
Institution: | Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin Key Laboratory of Applied Catalysis Science and Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China; Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China |
| |
Abstract: | Herein, we prepared a series of H-Zn-mordenite (H-Zn-MOR) catalysts by adding zinc source into the initial sols during the synthesis of mordenite (MOR). The results indicated that isolated Zn ions were highly dispersed in the catalysts. The addition of zinc led to the increase of Si/Al in the framework of MOR, the change of the distribution of acid sites and the change of acid strength. We investigated the catalytic performance of the H-Zn-MOR catalysts and the HMOR catalysts for carbonylation of dimethyl ether to methyl acetate. The addition of zinc improved the catalytic performance and made the drop of the conversion over the Zn-0.003 and Zn-0.005 catalysts to be about the half of that over the HMOR catalyst. We attributed it to the change of the acid properties, which further change the rate of coke deposition. |
| |
Keywords: | Zinc Mordenite Dimethyl ether Carbonylation Acidic property |
本文献已被 CNKI ScienceDirect 等数据库收录! |
| 点击此处可从《中国化学快报》浏览原始摘要信息 |
| 点击此处可从《中国化学快报》下载免费的PDF全文 |
|