Hydrogen adsorption on NiNaY composites at room and cryogenic temperatures

Ding, Ronggang, Zhu, Zhonghua, Yao, Xiangdong, Yan, Zifeng and Lu, Gaoqing (2010) Hydrogen adsorption on NiNaY composites at room and cryogenic temperatures. Catalysis Today, 158 3-4: 317-323. doi:10.1016/j.cattod.2010.04.002

Author Ding, Ronggang
Zhu, Zhonghua
Yao, Xiangdong
Yan, Zifeng
Lu, Gaoqing
Title Hydrogen adsorption on NiNaY composites at room and cryogenic temperatures
Journal name Catalysis Today   Check publisher's open access policy
ISSN 0920-5861
Publication date 2010-12
Sub-type Article (original research)
DOI 10.1016/j.cattod.2010.04.002
Volume 158
Issue 3-4
Start page 317
End page 323
Total pages 7
Place of publication Amsterdam, Netherlands
Publisher Elsevier BV
Collection year 2011
Language eng
Abstract The NiNaY composites have been investigated using various techniques to explore their hydrogen adsorption performance and structural characteristics. Hydrogen adsorption capacities of reduced NiNaY composites were significantly enhanced under various temperatures and pressures. Most noteworthy is that at room temperature and low pressure, hydrogen adsorption amount was increased by a remarkable factor of 7.1 for reduced 10 wt% NiNaY composite. Dissociative hydrogen adsorption and subsequent hydrogen spillover at high pressure have enhanced hydrogen adsorption capacity by a factor of 0.4 and 0.86 on reduced 10 wt% NiNaY composite at 77 and 303 K, respectively. The enhancement effect of hydrogen adsorption on the reduced composites at room temperature is determined by hydrogen adsorption on available nickel sites which were characterized by the active nickel surface areas. However, the optimized hydrogen adsorption enhancement effect on the composite at 77 K is achieved by a combination of suitable active nickel surface area and active support area. The results suggest that spillover effect is occurring at 77 K on the reduced NiNaY composites. Crown copyright © 2010 Published by Elsevier B.V.
Keyword Hydrogen spillover
NiNaY composite
Dissociative hydrogen adsorption
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
Official 2011 Collection
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Citation counts: TR Web of Science Citation Count  Cited 2 times in Thomson Reuters Web of Science Article | Citations
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Created: Sun, 26 Dec 2010, 00:08:58 EST