Dimethyl ether conversion to light olefins over the SAPO-34/ZrO2 composite catalysts with high lifetime

被引：44

作者：

Lee, Su-Gyung ^{[1
]}

Kim, Hyo-Sub ^{[1
]}

Kim, Young-Ho ^{[1
]}

Kang, Eun-Jee ^{[1
]}

Lee, Dong-Hee ^{[1
]}

Park, Chu-Sik ^{[2
]}

机构：

[1] Chungnam Natl Univ, Dept Fine Chem Engn & Appl Chem, Taejon 305764, South Korea

[2] Korea Inst Energy Res, Hydrogen Energy Res Grp, Taejon 305343, South Korea

来源：

JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY | 2014年 / 20卷 / 01期

关键词：

Dimethyl ether; DTO reaction; SAPO-34; catalyst; ZrO2; binder; Catalyst lifetime; METHANOL-TO-HYDROCARBONS; MIXED TEMPLATE; FLUIDIZED-BED; MTO REACTION; SELECTIVITY; CRYSTALS; ETHYLENE; ACIDITY;

D O I：

10.1016/j.jiec.2013.04.026

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The SAPO-34/ZrO2 composite catalysts using ZrO2 as a binder were prepared and their performance was investigated for the dimethyl ether to olefins (DTO) reaction. The composite catalysts showed higher catalytic lifetimes than the free SAPO-34 catalyst, while maintaining high selectivity toward light olefins. This suggests that the binder-filled space between the SAPO-34 crystals can provide additional diffusion paths for mass transfer. In the SAPO-34/ZrO2 composite catalysts with different ZrO2 contents, the SAPO-34(11 wt%)/ZrO2 composite catalyst showed the highest catalytic lifetime. It can be concluded that ZrO2 is one of the best binders for the preparation of SAPO-34/binder composite catalysts. (C) 2013 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.

引用

页码：61 / 67

页数：7

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