Adsorption of hydrogen and deuterium in MnO2 modified NaX zeolites

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	Adsorption of hydrogen and deuterium in MnO2 modified NaX zeolites
	J. S. Shi; J. Li; E. D. Wu
	2012
发表期刊	Microporous and Mesoporous Materials
ISSN	1387-1811
卷号	152 页码:219-223
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.
部门归属	[shi, jinsong; li, jing; wu, erdong] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china.;wu, ed (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china.;ewu@imr.ac.cn
关键词	Zeolite Hydrogen Adsorption Surface Modification Kubas Interaction Sigma-bond Storage Physisorption Coordination Spillover Isotopes Moo3
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/60224
专题	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.