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Proceedings Paper

Catalytic hydrolysis of kalium borohydride using CoTiO3/cordierite
Author(s): Guojun Dong; Guixiang Wang; Huanbo Han; Xiuling Ru
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Paper Abstract

CoTiO3/cordierite catalyzer was synthesized with high specific surface area cordierite of clear and near as carrier, coating with TiO2 and loading cobalt chloride by hydrothermal synthesis, then baking at 500°C and soaking in kalium borohydride (KBH4) solution. The catalyzer was characterized with X-ray diffraction (XRD), Scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). Test results above show that the active component of catalyzer is CoTiO3 produced by the reaction of TiO2 with Co3O4. The performance of hydrogen evolution of catalyzer after soaking in KBH4 solution has improved because of the reductive of KBH4. The Co3O4 unreacted with TiO2 cumber the catalyzer performance of hydrogen evolution, but the KBH4 can deoxidize the Co3O4 as Co and the Co can fall off from the surface of the catalyzer. SEM shows that on the surface of the catalyzer there is sheet CoTiO3, the thickness of which are many decades nanometers. Experiment research shows that it has superior performance of hydrogen evolution after soaking in KBH4 solution, and its performance of catalytic hydrolysis in alkaline KBH4 solution is better than that in the solution without alkali. The maximum hydrogen generation rate as a function of 0.34g catalyzer in 10% KBH4 solution with approximate 18% NaOH is 160 mL·min-1 at room temperature.

Paper Details

Date Published: 1 November 2007
PDF: 6 pages
Proc. SPIE 6423, International Conference on Smart Materials and Nanotechnology in Engineering, 64235Q (1 November 2007); doi: 10.1117/12.780345
Show Author Affiliations
Guojun Dong, Harbin Engineering Univ. (China)
Guixiang Wang, Harbin Engineering Univ. (China)
Huanbo Han, Harbin Engineering Univ. (China)
Xiuling Ru, Harbin Engineering Univ. (China)

Published in SPIE Proceedings Vol. 6423:
International Conference on Smart Materials and Nanotechnology in Engineering
Shanyi Du; Jinsong Leng; Anand K. Asundi, Editor(s)

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