Comparison of Catalytic Performances Between Complete Liquid-phase’s Catalyst and Sol-gel’s Catalyst for Slurry Synthesis Dimethyl Ether

Chem. J. Chinese Universities ›› 2011, Vol. 32 ›› Issue (6): 1360.

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Comparison of Catalytic Performances Between Complete Liquid-phase’s Catalyst and Sol-gel’s Catalyst for Slurry Synthesis Dimethyl Ether

FAN Jin-Chuan^1,2, HUANG Wei^1*, JI Peng¹

1. Key Laboratory of Coal Science and Technology of Ministry of Education and Shanxi Province,
2. College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China

Received:2010-09-02 Revised:2010-12-15 Online:2011-06-10 Published:2011-05-10
Contact: HUANG Wei E-mail:huangwei@tyut.edu.cn
Supported by:
国家自然科学基金(批准号: 20706039, 20471040)、国家“九七三”计划项目(批准号: 2005CB221204)和山西省自然科学基金(批准号: 2009011059\|13)资助.

Abstract

Abstract: The Cu-Zn-Al bifunctional catalysts were respectively prepared by complete liquid-phase method and sol-gel method. The properties of catalysts were characterized by XRD, N2 adsorption and XPS, and the catalytic performance of catalysts for DME synthesis directly from syngas in a slurry reactor was evaluated. The results show that Cu species and surface Cu content in catalysts have obvious difference, but texture properties are similar. The catalyst prepared by complete liquid-phase method has high selectivity and good stability, and the catalyst specific surface area, pore volume, surface Cu content and Cu/Zn mole ratio increase after reaction. The catalyst prepared by sol-gel method has obvious deactivation, and average deactivation rate is 1.62 %/d. The decrease of specific surface area, pore volume, surface Cu content and Cu/Zn mole ratio after reaction are the reason of catalyst deactivation.

Key words: Complete liquid-phase, Sol-gel, Slurry reactor, Dimethyl ether, Cu-Zn-Al catalyst

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FAN Jin-Chuan, HUANG Wei*, JI Peng. Comparison of Catalytic Performances Between Complete Liquid-phase’s Catalyst and Sol-gel’s Catalyst for Slurry Synthesis Dimethyl Ether[J]. Chem. J. Chinese Universities, 2011, 32(6): 1360.

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Comparison of Catalytic Performances Between Complete Liquid-phase’s Catalyst and Sol-gel’s Catalyst for Slurry Synthesis Dimethyl Ether

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