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Received: 2008-03-03

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Journal of Zhejiang University SCIENCE A 2008 Vol.9 No.9 P.1288~1295


Attrition resistant catalyst for dimethyl ether synthesis in fluidized-bed reactor

Author(s):  Li-hua TENG

Affiliation(s):  Institute of Biology and Environmental Science, Zhejiang Wanli University, Ningbo 315100, China

Corresponding email(s):   tlh_98@163.com

Key Words:  Dimethyl ether (DME), Attrition resistance, Catalytic activity, Silica sol

Li-hua TENG. Attrition resistant catalyst for dimethyl ether synthesis in fluidized-bed reactor[J]. Journal of Zhejiang University Science A, 2008, 9(9): 1288~1295.

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author="Li-hua TENG",
journal="Journal of Zhejiang University Science A",
publisher="Zhejiang University Press & Springer",

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%T Attrition resistant catalyst for dimethyl ether synthesis in fluidized-bed reactor
%A Li-hua TENG
%J Journal of Zhejiang University SCIENCE A
%V 9
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%@ 1673-565X
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%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A0820155

T1 - Attrition resistant catalyst for dimethyl ether synthesis in fluidized-bed reactor
A1 - Li-hua TENG
J0 - Journal of Zhejiang University Science A
VL - 9
IS - 9
SP - 1288
EP - 1295
%@ 1673-565X
Y1 - 2008
PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.A0820155

Fluidized-bed reactor is a candidate for dimethyl ether (DME) synthesis from syngas because of its excellent heat removal capability. In order to improve the attrition resistance of catalyst, an amount of silica sol as binder was added to the catalyst composed of methanol synthesis component CuO/ZnO/Al2O3 and methanol dehydration component HZSM-5, which was prepared by coprecipitation and shaped by spray drying to get spherical particles. The effect of silica sol on the catalytic activity was investigated in a fixed-bed flow microreactor. Based on the experiment results, silica sol in the range of 0~20wt% had small effect on the catalytic activity. Generally, the CO conversion and DME yield decreased with the increase in concentration of silica sol, while the attrition resistance of catalysts increased with increasing silica sol, indicating that it was feasible to improve the attrition resistance without greatly sacrificing the activity of catalyst. In addition, the characterizations of catalysts were carried out using Brunauer-Emmett-Teller (BET), X-ray powder diffraction (XRD) and temperature programmed reduction (TPR).

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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