Journal
JOURNAL OF ENERGY CHEMISTRY
Volume 25, Issue 5, Pages 775-781Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jechem.2016.04.014
Keywords
Syngas; Dimethyl ether; Solution combustion; Bifunctional catalyst
Funding
- National Natural Science Foundation of China [51,451,002, 21,371,129]
- Shanxi Province Science Foundation for Youths [2,013,021,008-3]
- joint funds of the national natural science foundation of China-China Petroleum and Chemical Corporation [U1463209]
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Ordered mesoporous copper incorporated Al2O3 (Cu/Al2O3) with high Cu dispersion were prepared by a facile solution combustion synthesis method using aluminum nitrate and copper nitrate as oxidants and urea as fuel. It is a facile and green route to synthesize catalysts for dimethyl ether directly from syngas. Cu/Al2O3 catalysts were characterized by XRD, N-2 adsorption-desorption, SEM-EDS, and H-2-TPR. The results indicate that the catalysts obtain an ordered mesoporous structure and copper is homogenously dispersed. The mesoporous Cu/Al2O3 catalysts were utilized as bifunctional catalysts in syngas to dimethyl ether reaction (STD). The copper content affects the catalytic performance in STD reaction. The CO conversion and DME selectivity of Cu/Al2O3 with 15% copper molar ratio achieve 52.9% and 66.1%, respectively. Moreover, the mesoporous Cu/Al2O3 catalysts show excellent stability in STD reaction. (C) 2016 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. and Science Press. All rights reserved.
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