Citation: WANG Dong-zhe, WANG Li-bao, ZHANG Lei, QING Shao-jun, HAN Jiao, ZHANG Cai-shun, GAO Zhi-xian, FENG Xu-hao. Effect of Cr doping on hydrogen production via methanol steam reforming over Cu-Ce composite catalysts[J]. Journal of Fuel Chemistry and Technology, ;2020, 48(5): 619-625. shu

Effect of Cr doping on hydrogen production via methanol steam reforming over Cu-Ce composite catalysts

1.
College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University, Fushun 113001, China
2.
Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
3.
No.3 Refinery of Fushun Petrochemical Company of CNPC, Fushun 113001, China

Corresponding author: ZHANG Lei, lpuhangcie163.com
Received Date: 30 March 2020
Revised Date: 5 May 2020

Fund Project: The project was supported by the National Natural Science Foundation of China (21376237), Scientific Research Fund Project of Liaoning Provincial Department of Education (L2019038), General Program of Liaoning Natural Science Foundation (2019-MS-221) and Guidance Project of Liaoning Natural Science Foundation(2019-ZD-0371)the National Natural Science Foundation of China 21376237Guidance Project of Liaoning Natural Science 2019-ZD-0371General Program of Liaoning Natural Science Foundation 2019-MS-221Scientific Research Fund Project of Liaoning Provincial Department of Education L2019038

Figures(9)

Cr/Cu-Ce catalyts with different Cr contents were prepared by impregnation method, and their structures, properties and catalytic performance were investigated using N₂O titration, H₂-TPR and XPS techniques. It is found that the Cr doping changs the specific surface area of copper, the reduction temperature of CuO and oxygen vacancies of the Cu-Ce catalysts. In addition, the catalyst with 3% Cr addition has larger Cu specific surface area, lower CuO reduction temperature and more oxygen vacancies, thus exhibits excellent catalytic performance. The catalytic efficiency reaches 100% and CO volume fraction in outlet gas is 0.15% when the reaction temperature is 533 K, n(water):n(methanol) is 1.2:1 and the feeding rate of methanol and water is 0.072 mL/min. Compared with the un-doped Cr catalyst, the catalytic efficiency increases by 10% and the volume fraction of CO in the outlet gas decreases by 0.34%.
- Cr content,
- oxygen vacancy,
- Cu-Ce catalyst,
- reduction temperature
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