Adsorption of hydrogen and deuterium in MnO2 modified NaX zeolites

CORC > 金属研究所 > 中国科学院金属研究所

	Adsorption of hydrogen and deuterium in MnO2 modified NaX zeolites
	J. S. Shi ; J. Li ; E. D. Wu
刊名	Microporous and Mesoporous Materials
	2012
卷号	152 页码:219-223
关键词	Zeolite Hydrogen adsorption Surface modification Kubas interaction sigma-bond storage physisorption coordination spillover isotopes moo3
ISSN号	1387-1811
中文摘要	MnO2 modified NaX zeolites are prepared by dispersion of MnO2 on the surface of NaX in a calcination process. XRD, XPS and N-2 adsorption tests confirm that the dispersed MnO2 is primarily monolayer and the calcination conditions affect the dispersion efficiency. The adsorption performances of hydrogen and deuterium of the modified zeolites are investigated at both 77 K and 295 K. A hydrogen adsorption capacity increase up to 30% is observed at 295 K for NaX with moderate MnO2 modification, but the corresponding adsorption at 77 K does not show much improvement, and even deteriorates for the samples with high MnO2 contents. NaX shows an adsorption capacity difference of 11% between hydrogen and deuterium at 9 bar and 77 K, higher than that of MnO2 modified samples (4%); while the difference is much smaller at 295 K for all samples. The effects of MnO2 modification on hydrogen adsorption properties are explained by the involvement of Kubas interaction, where Mn in MnO2 acts as a d-electron donor for the enhanced binding of hydrogen molecules. (C) 2011 Elsevier Inc. All rights reserved.
原文出处	://WOS:000300269000029
公开日期	2013-02-05
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/60224]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	J. S. Shi,J. Li,E. D. Wu. Adsorption of hydrogen and deuterium in MnO2 modified NaX zeolites[J]. Microporous and Mesoporous Materials,2012,152:219-223.
APA	J. S. Shi,J. Li,&E. D. Wu.(2012).Adsorption of hydrogen and deuterium in MnO2 modified NaX zeolites.Microporous and Mesoporous Materials,152,219-223.
MLA	J. S. Shi,et al."Adsorption of hydrogen and deuterium in MnO2 modified NaX zeolites".Microporous and Mesoporous Materials 152(2012):219-223.