Jeong, S. U. Cho, E. A. Nam, S. W. Oh, I. H. Jung, U. H. Kim, S. H. 2024-01-21T00:34:58Z 2024-01-21T00:34:58Z 2021-09-02 2007-08 0360-3199 https://pubs.kist.re.kr/handle/201004/134243 A Co-B catalyst is used to generate hydrogen from alkaline aqueous NaBH4 solutions. This study examined the properties of a CO-B catalyst prepared using different precursors (COCl2 and CoSO4) and NaBH4/CO2+ mole ratios (0.67, 1.5, 3) at calcination temperatures of 130, 250 and 450 degrees C. As the calcination temperature was increased in N-2 atmosphere mixed with 1% air, the typical amorphous structure of Co-B disappeared and the X-ray diffraction peaks corresponding to Co3O4 became sharper. Metallic Co was formed when a NaBH4/CO2+ mole ratio of 3 was used as the reductant with a corresponding reduction in the rate of H-2 generation. The highest level of H-2 generation (2400 ml/min g) was obtained with CoCl2 as the precursor, a NaBH4/CO2+ mole ratio of 1.5 as the reductant, and a calcination temperature of 250 degrees C. (C) 2006 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved. English PERGAMON-ELSEVIER SCIENCE LTD SODIUM-BOROHYDRIDE HYDROLYSIS COBALT METAL BORIDE IONS Effect of preparation method on Co-B catalytic activity for hydrogen generation from alkali NaBH4 solution Article 10.1016/j.ijhydene.2006.11.036 1 INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, v.32, no.12, pp.1749 - 1754 INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 32 12 1749 1754 scie scopus 000249739100018 2-s2.0-34547857771 Chemistry, Physical Electrochemistry Energy & Fuels Chemistry Electrochemistry Energy & Fuels Article SODIUM-BOROHYDRIDE HYDROLYSIS COBALT METAL BORIDE IONS Co-B catalyst hydrogen generation NaBH4