Autothermal reforming of dimethyl ether with CGO-based precious metal catalysts

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In this paper, we investigated the DME ATR reaction with different types of precious metal (Pt, Rh, Ru)supported CGO catalysts. We also evaluated the reaction characteristics of DME ATR reaction by modifying certain reforming conditions, including the temperature, the amount of air and water, and the flow rate. The Ru-added CGO catalyst showed the best performance in DME ATR. The operating condition that produced the greatest effect on conversion efficiency was temperature; however the amounts of steam and air were also important with regard to conversion efficiency and the reaction heat. In case higher GHSV conditions the methane yields are increased. To maximize conversion efficiency with thermal neutral operating conditions, we suggest an SCR of 1.5, OCR of 0.45, over temperature of 700 degrees C, and a GHSV of less than 20,000/h. Under harsh conditions, such as low temperature and high GHSV, the methane yield increases. Therefore, the high temperature DME ATR reaction seems to consist of two main steps: the DME decomposition to methane and the methane autothermal reforming reaction.
Publisher
ELSEVIER SCIENCE BV
Issue Date
2016-03
Language
English
Article Type
Article
Keywords

HYDROGEN-PRODUCTION; PARTIAL OXIDATION; ALTERNATIVE FUEL; THERMODYNAMIC-EQUILIBRIUM; SPRAY CHARACTERISTICS; COMPOSITE CATALYSTS; DME; ENGINE; SYSTEM; SPINEL

Citation

JOURNAL OF POWER SOURCES, v.307, pp.351 - 357

ISSN
0378-7753
DOI
10.1016/j.jpowsour.2015.12.068
URI
http://hdl.handle.net/10203/208160
Appears in Collection
ME-Journal Papers(저널논문)
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