Synthesis and characterization of Co/SiO2 as catalyst catalyze hydrogen generation

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Title:	Synthesis and characterization of Co/SiO2 as catalyst catalyze hydrogen generation
Authors:	Su, Chia-Chi Shih, Yu-Jen Huang, Yao-Hui Lu, Ming-Chun
Contributors:	環境資源管理系
Keywords:	Catalyst Hydrolysis Hydrogen generation Sodium borohydride Porous SiO2
Date:	2011-11
Issue Date:	2013-10-16 16:57:11 (UTC+8)
Publisher:	Elsevier
Abstract:	Novel composites of porous SiO2-LP and SiO2-HP supports are synthesized by the silica–polyethylene glycol monooleyl ether surfactant self-assembly method to obtain a large surface area. Cobalt is immobilized in the supports by incipient wetness impregnation. A stable and active Co/SiO2 catalyst is examined using FE-SEM, BET and XRD. Further, the catalyst is tested for catalytic hydrolysis of alkaline sodium borohydride (NaBH4) solution: the rate of hydrogen generation is found to increase with increasing cobalt loading of the Co/SiO2 catalyst. The hydrogen generation rates increase dramatically when the temperature is increased from 17 to 40 °C. The highest hydrogen generation rates of Co/SiO2 catalyst are obtained at 2513 mL min− 1 g− 1 in 20 mL of 5 wt.% NaBH4 solution containing 5 wt.% NaOH at 40 °C.
Relation:	Materials Letters, 65(21-22), pp.3212-3215
Appears in Collections:	[Dept. of Environmental Resources Management] Periodical Articles

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