Cobalt nanoparticles supported on alumina nanofibers (Co/Al2O3): Cost effective catalytic system for the hydrolysis of methylamine borane |
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| Affiliation: | 1. Nanomaterials and Catalysis Research Group, Department of Chemistry, Van Yuzuncu Yil University, 65080, Campus, Van, Turkey;2. Department of Chemical Engineering and Applied Chemistry, Atilim University, 06836, Ankara, Turkey;3. Department of Chemistry, Dicle University, 21280, Diyarbakır, Turkey;1. College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, PR China;2. Suzhou Institute of Wuhan University, Suzhou, Jiangsu 215123, PR China;1. Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, PR China;2. Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, 1219 Zhongguan West Road, Ningbo, Zhejiang, 315201, PR China;1. College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610068, PR China;2. Key Laboratory of Green Chemistry of Sichuan Institutes of Higher Education, Sichuan University of Science and Engineering, Zigong, 643000, PR China;1. Chemistry Department, Faculty of Science, Van Yüzüncü Yıl University, Zeve Campus, 65080, Turkey;2. Sen Research Group, Department of Biochemistry, Faculty of Arts and Science, Dumlupınar University, Evliya Çelebi Campus, 43100 Kütahya, Turkey |
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| Abstract: | Amongst different amine-borane derivatives, methylamine-borane (CH3NH2BH3) seems to be one of the capable aspirants in the storing of hydrogen attributable to its high hydrogen capacity, stability and aptitude to generate hydrogen through its catalytic hydrolysis reaction under ambient conditions. In this research paper, we report that cobalt nanoparticles supported on alumina nanofibers (Co/Al2O3) are acting as active nanocatalyst for catalytic hydrolysis of methylamine-borane. Co/Al2O3 nanocatalyst was fabricated by double-solvent method followed with wet-chemical reduction, and was characterized by utilizing various spectroscopic methods and imaging techniques. The results gathered from these analyses showed that the formation Al2O3 nanofibers supported cobalt(0) nanoparticles with a mean diameter of 3.9 ± 1.2 nm. The catalytic feat of these cobalt nanoparticles was scrutinized in the catalytic hydrolysis of methylamine-borane by considering their activity and durability performances. They achieve releasing of 3.0 equivalent of H2 via methylamine-borane hydrolysis at room temperature (initial TOF = 297 mol H2/mol metal × h). Along with activity the catalytic durability of Co/Al2O3 was also studied by carrying out recyclability tests and it was found that these supported cobalt nanoparticles have good durability during the course of the catalytic recycles so that Co/Al2O3 preserves almost its innate activity at 5th catalytic recycle. The studies presented here also contains kinetic investigation of Co/Al2O3 catalyzed methylamine borane hydrolysis depending on the temperature, cobalt and methylamine borane concentrations, which were used to define rate expression and the activation energy of the catalytic reaction. |
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| Keywords: | Methylamine-borane Hydrogen Cobalt Nanoparticles Alumina nanofiber |
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