期刊
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
卷 20, 期 1, 页码 61-67出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jiec.2013.04.026
关键词
Dimethyl ether; DTO reaction; SAPO-34 catalyst; ZrO2 binder; Catalyst lifetime
资金
- Chungnam National University
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.
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