Kinetics of sodium borohydride hydrolysis catalyzed via carbon nanosheets supported Zr/Co

doi:10.1016/j.jpowsour.2013.01.008

	Kinetics of sodium borohydride hydrolysis catalyzed via carbon nanosheets supported Zr/Co
	Zhang, Xuan 1; Wei, Zhenhua 2; Guo, Qingjie 1; Tian, Hongjing 1; Guo, QJ
	2013-06-01
发表期刊	JOURNAL OF POWER SOURCES
ISSN	0378-7753
卷号	231 页码:190-196
文章类型	Article
摘要	Porous sheet-like activated carbon was prepared in a fluidized bed using peanut shell as carbon precursor. Cobalt and zirconium were impregnated onto the carbon by impregnation-chemical reduction method to obtain carbon nanosheets supported Co and Zr/Co catalysts. The samples were characterized using field emission scanning electron microscopy, X-ray diffraction, H-2-temperature-programmed reduction, and nitrogen adsorption measurements. It was found that the introduction of zirconium to the carbon-supported cobalt led to an intensified interaction between cobalt and the support. With the activation energy of 34.84 kJ mol(-1) and maximum hydrogen generation rate of 1708 mL min(-1) g(-1), this novel carbon-supported Zr/Co catalyst exhibited superior catalytic activity for the hydrolysis of NaBH4 in alkaline medium. Furthermore, the effects of temperature, catalyst amount, and concentration of NaOH and NaBH4 on the hydrolysis process were systematically studied, and an overall kinetic rate equation was described as r = Ae(-34840/(RT))[catalyst](1.53)[NaOH](-0.54)[NaBH4](0.43). (C) 2013 Elsevier B.V. All rights reserved.; Porous sheet-like activated carbon was prepared in a fluidized bed using peanut shell as carbon precursor. Cobalt and zirconium were impregnated onto the carbon by impregnation-chemical reduction method to obtain carbon nanosheets supported Co and Zr/Co catalysts. The samples were characterized using field emission scanning electron microscopy, X-ray diffraction, H-2-temperature-programmed reduction, and nitrogen adsorption measurements. It was found that the introduction of zirconium to the carbon-supported cobalt led to an intensified interaction between cobalt and the support. With the activation energy of 34.84 kJ mol(-1) and maximum hydrogen generation rate of 1708 mL min(-1) g(-1), this novel carbon-supported Zr/Co catalyst exhibited superior catalytic activity for the hydrolysis of NaBH4 in alkaline medium. Furthermore, the effects of temperature, catalyst amount, and concentration of NaOH and NaBH4 on the hydrolysis process were systematically studied, and an overall kinetic rate equation was described as r = Ae(-34840/(RT))[catalyst](1.53)[NaOH](-0.54)[NaBH4](0.43). (C) 2013 Elsevier B.V. All rights reserved.
关键词	Hydrogen Sodium Borohydride Carbon-supported Zirconium/cobalt Kinetics
学科领域	Electrochemistry ; Energy & Fuels
DOI	10.1016/j.jpowsour.2013.01.008
URL	查看原文
收录类别	SCI
语种	英语
WOS研究方向	Electrochemistry ; Energy & Fuels
WOS类目	Electrochemistry ; Energy & Fuels
WOS记录号	WOS:000316036700024
WOS关键词	ALKALINE NABH4 SOLUTION ; FUEL-CELL APPLICATIONS ; IMPROVED HYDROGEN GENERATION ; COBALT(0) NANOCLUSTERS ; ROOM-TEMPERATURE ; AMMONIA-BORANE ; CO-B ; STORAGE ; DECOMPOSITION ; EFFICIENT
WOS标题词	Science & Technology ; Physical Sciences ; Technology
引用统计	被引频次：30[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/16479
专题	海洋生态与环境科学重点实验室
通讯作者	Guo, QJ
作者单位	1.Qingdao Univ Sci & Technol, Coll Chem Engn, Qingdao 266042, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Xuan,Wei, Zhenhua,Guo, Qingjie,et al. Kinetics of sodium borohydride hydrolysis catalyzed via carbon nanosheets supported Zr/Co[J]. JOURNAL OF POWER SOURCES,2013,231:190-196.
APA	Zhang, Xuan,Wei, Zhenhua,Guo, Qingjie,Tian, Hongjing,&Guo, QJ.(2013).Kinetics of sodium borohydride hydrolysis catalyzed via carbon nanosheets supported Zr/Co.JOURNAL OF POWER SOURCES,231,190-196.
MLA	Zhang, Xuan,et al."Kinetics of sodium borohydride hydrolysis catalyzed via carbon nanosheets supported Zr/Co".JOURNAL OF POWER SOURCES 231(2013):190-196.

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