Preparation of magnetic cobalt-based catalyst for hydrogen generation from alkaline NaBH4 solution

Cheng Hong Liu, Bing-Hung Chen, Chan Li Hsueh, Jie Ren Ku, Fanghei Tsau, Kuo Jen Hwang

研究成果: Article

65 引文 (Scopus)

摘要

A fast and simple fabrication process, viz. a wet-chemical reduction process, was utilized for preparation of a cobalt-based catalyst to be used for hydrogen generation from alkaline NaBH4 solution. Characteristics of this cobalt-based catalyst were carried out by using various instruments, such as SEM/EDS, XPS, ICP, VSM, BET and TGA. The surface chemistry of the obtained catalyst is mainly cobalt oxides, not cobalt borides. Ferromagnetic property of the cobalt-based catalyst makes it convenient for being recycled from spent NaBH4 solution. The rate of hydrogen generation from catalyzed hydrolysis of alkaline NaBH4 solution was determined as a function of temperature, NaBH4 concentration, and NaOH concentration in the presence of prepared catalysts. In general, stable generation rate of highly pure hydrogen near 200 mL min-1 g-1 was achieved in 100 mL of 5 wt% NaBH4 solution containing 5 wt% NaOH solution and 200 mg of Co/IR-120 catalyst, in which no temperature runoff was observed during the course of hydrogen production. The activation energy of NaBH4 hydrolysis reaction was found at 66.67 kJ mol-1, which was comparable with others reported in the open literatures.

原文English
頁(從 - 到)368-379
頁數12
期刊Applied Catalysis B: Environmental
91
發行號1-2
DOIs
出版狀態Published - 2009 九月 7

指紋

Cobalt
cobalt
Hydrogen
catalyst
hydrogen
Catalysts
hydrolysis
Hydrolysis
Boron Compounds
Borides
Hydrogen production
Surface chemistry
Runoff
activation energy
X-ray spectroscopy
Energy dispersive spectroscopy
X ray photoelectron spectroscopy
Activation energy
temperature
scanning electron microscopy

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Environmental Science(all)
  • Process Chemistry and Technology

引用此文

Liu, Cheng Hong ; Chen, Bing-Hung ; Hsueh, Chan Li ; Ku, Jie Ren ; Tsau, Fanghei ; Hwang, Kuo Jen. / Preparation of magnetic cobalt-based catalyst for hydrogen generation from alkaline NaBH4 solution. 於: Applied Catalysis B: Environmental. 2009 ; 卷 91, 編號 1-2. 頁 368-379.
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Preparation of magnetic cobalt-based catalyst for hydrogen generation from alkaline NaBH4 solution. / Liu, Cheng Hong; Chen, Bing-Hung; Hsueh, Chan Li; Ku, Jie Ren; Tsau, Fanghei; Hwang, Kuo Jen.

於: Applied Catalysis B: Environmental, 卷 91, 編號 1-2, 07.09.2009, p. 368-379.

研究成果: Article

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AU - Hwang, Kuo Jen

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