Catalytic hydrolysis of kalium borohydride using CoTiO3/cordierite

Guojun Dong; Guixiang Wang; Huanbo Han; Xiuling Ru

doi:10.1117/12.780345

1 November 2007 Catalytic hydrolysis of kalium borohydride using CoTiO₃/cordierite

Guojun Dong, Guixiang Wang, Huanbo Han, Xiuling Ru

Proceedings Volume 6423, International Conference on Smart Materials and Nanotechnology in Engineering; 64235Q (2007) https://doi.org/10.1117/12.780345
Event: International Conference on Smart Materials and Nanotechnology in Engineering, 2007, Harbin, China

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 KBH₄can 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.

Citation Download Citation

Guojun Dong, Guixiang Wang, Huanbo Han, and Xiuling Ru "Catalytic hydrolysis of kalium borohydride using CoTiO₃/cordierite", Proc. SPIE 6423, International Conference on Smart Materials and Nanotechnology in Engineering, 64235Q (1 November 2007); https://doi.org/10.1117/12.780345

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