IHEP OpenIR
Promotional effect of Partial substitution of Zn by Ce in CuZnAlO catalysts used for hydrogen production via steam reforming of dimethyl ether
Zhang, LJ; Meng, M; Zhou, S; Sun, ZS; Zhang, J; Xie, YN; Hu, TD;张静; Xie YN(谢亚宁); Hu TD(胡天斗)
2013
Source PublicationJOURNAL OF POWER SOURCES
ISSN0378-7753
EISSN1873-2755
Volume232Pages:286-296
AbstractA series of CuZnAlCeO catalysts with Zn partially substituted by Ce were prepared by co-precipitation, and employed for hydrogen production via dimethyl ether steam reforming (DME SR). The catalytic activity of these catalysts largely depends on CeO2 content. The catalyst containing 10 wt% CeO2 exhibits the best catalytic performance. The techniques of X-ray diffraction (XRD), N2O chemisorption, X-ray absorption fine structure (XAFS, including XANES and EXAFS), temperature-programmed reduction (H-2-TPR) and CO desorption (CO-TPD) were used for catalyst characterization. The results of XRD, H-2-TPR and N2O chemisorption conformably indicate that partial substitution of Zn by Ce can remarkably improve the dispersion of Cu species. The presence of Ce could not only inhibit the sintering of Cu species, but also improve the reducibility of copper oxides. The CO-TPD results clearly indicate that the two catalysts with 5 and 10 wt% CeO2 possess higher CO-chemisorption capability than others, which is consistent with the results of Cu dispersion. The linear fitting results of XANES spectra reveal that these two catalysts also contain higher amount of Cu+ species, which determines their better catalytic performance for DME SR. (C) 2013 Elsevier B.V. All rights reserved.
KeywordDimethyl ether Steam reforming Hydrogen production Copper-based catalyst Substitution
Subject AreaElectrochemistry; Energy & Fuels
DOI10.1016/j.jpowsour.2013.01.071
Indexed BySCI
Language英语
WOS IDWOS:000318752800039
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/223927
Collection中国科学院高能物理研究所
Recommended Citation
GB/T 7714
Zhang, LJ,Meng, M,Zhou, S,et al. Promotional effect of Partial substitution of Zn by Ce in CuZnAlO catalysts used for hydrogen production via steam reforming of dimethyl ether[J]. JOURNAL OF POWER SOURCES,2013,232:286-296.
APA Zhang, LJ.,Meng, M.,Zhou, S.,Sun, ZS.,Zhang, J.,...&胡天斗.(2013).Promotional effect of Partial substitution of Zn by Ce in CuZnAlO catalysts used for hydrogen production via steam reforming of dimethyl ether.JOURNAL OF POWER SOURCES,232,286-296.
MLA Zhang, LJ,et al."Promotional effect of Partial substitution of Zn by Ce in CuZnAlO catalysts used for hydrogen production via steam reforming of dimethyl ether".JOURNAL OF POWER SOURCES 232(2013):286-296.
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