Catalytic Performance of Ce-modified MCM-68 Zeolite in the Dimethyl Ether-to-Olefin Reaction: Impact of High Calcination Temperature

被引：10

作者：

Han, Qiao ^{[1
]}

Enoeda, Kizuku ^{[1
]}

Inagaki, Satoshi ^{[1
]}

Kubota, Yoshihiro ^{[1
]}

机构：

[1] Yokohama Natl Univ, Div Mat Sci & Chem Engn, Hodogaya Ku, 79-5 Tokiwadai, Yokohama, Kanagawa 2408501, Japan

来源：

CHEMISTRY LETTERS | 2017年 / 46卷 / 09期

关键词：

MCM-68; zeolite; Ce-modification; Dimethyl ether-to-olefin reaction; MAXIMUM PROPYLENE PRODUCTION; LIGHT OLEFINS; RARE-EARTH; ZSM-5; ZEOLITE; FCC UNIT; CRACKING; METHANOL; SAPO-34; DEACTIVATION; CONVERSION;

D O I：

10.1246/cl.170591

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

MCM-68 zeolite with a multi-dimensional pore system, in which 12-ring and 10-ring micropores interconnect and only the 10-ring pores connect with supercages, is a promising catalyst for the propylene production processes. Although the MCM-68 calcined at 800 degrees C after dealumination showed low catalytic activity due to loss of crystallinity, Ce-modification of dealuminated MCM-68 enhanced the stability. By successive calcination at 800 degrees C, selective and long-lived catalyst for dimethyl ether-to-olefin conversion was obtained, and the propylene yield was as high as 46%.

引用

页码：1434 / 1437

页数：4