| METAIS AND METAL MATRIX COMPOSITES |
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| Preparation of Mo-doped Co-B Amorphous Alloy and Its Catalytic Performance on Sodium Borohydride Hydrolysis for Hydrogen Production |
| SHAO Yangyang, JIN Huiming, YU Liang, GAO Jicheng, CHEN Yuerong
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| School of Mechanical Engineering,Yangzhou University,Yangzhou 225000,China |
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Abstract As a metal hydride, sodium borohydride has become one of the hot spots in the field of hydrogen production due to its large hydrogen storage density, high hydrogen production purity, low reaction temperature, safe storage and transportation, and excellent energy cycle utilization. The key technology of hydrolysis of sodium borohydride to produce hydrogen lies in catalyst. In this study, a series of Mo-doped ternary Mo-Co-B amorphous alloy powders, catalysts for sodium borohydride hydrolysis for hydrogen production, were prepared by chemical reduction. The structure and properties of the Mo-Co-B alloy samples were characterized by X-ray diffractometer (XRD), field emission transmission electron microscope (FETEM), scanning electron microscope (SEM) and energy dispersive spectrometer (EDS). Furthermore, the catalytic activity of the samples was investigated by NaBH4 hydrolysis reaction. As could be seen from the results, appropriate doping of Mo in Co-B contributed to reducing the particle size, enlarging the specific surface area and improving the catalytic activity of Co-B amorphous alloy. Whereas, excess Mo did harm to the catalytic reaction due to the increase of metal oxide in catalyst powder. The Mo-Co-B amorphous alloy exhibited optimum catalytic performance when n(Mo)/n(Co) was 0.05. Besides, the effects of reaction temperature, catalyst amount and NaBH4 concentration on hydrogen generation rate were discussed as well.
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Published: 25 January 2020
Online: 2020-01-03
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About author: Yangyang Shao, female, received her M.S. degree in June 2019 from Yangzhou University. Her research mainly focuses on the basic theory and hydrogen production of amorphous catalysts. So far, she applied for a patent for utility model and has one patent of utility model authorized certificate successfully. She has participated in several projects which were supported by the Natural Science Foundation of the Jiangsu Higher Education Institutions of China and some horizontal projects;Huiming Jinserved in Yangzhou University as a professor and graduate supervisor, till now. He is the leader of material processing engineering of Yangzhou University, member of mechanical manufacturing branch of China Mechanical Engineering Society, se-nior member of Jiangsu Vacuum and Thin Film Society, non-partisan Gaozhi of Yangzhou University and the outstanding young backbone teachers of Yangzhou Uni-
versity. He graduated from Dalian University of Technology with a major in applied chemistry in 1990. In 1993, he obtained his M.E. degree from the Institute of Metal Research of the Chinese Academy of Sciences, IMR, where he was engaged in the study of corrosion and wear of materials. He obtained Ph.D from IMR, research on superalloys and anti-oxidation coatings in 1996. He has served as an associate professor at the School of Science, Shenyang University of Technology, and a researcher of the School of Materials Engineering, National University of Colombia. Since 2003, he has served at the School of Mechanical Engineering of Yangzhou University, teaching and research in material processing and surface enginee-ring. His research interests are material preparation, surface modification of material, metal/ceramic composite coating, nano materials, etc. He has presided over and participated in more than 10 projects of National Natural Science Foundation of China, Natural Science Foundation of Liaoning Pro-vince, Natural Science Foundation of Jiangsu Province and horizontal scientific research projects, and published more than 40 research papers, including more than 30 articles received by SCI and EI. |
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2020, Vol. 34 
