Hydrogen generation from sodium borohydride hydrolysis by multi-walled carbon nanotube supported platinum catalyst: A kinetic study |
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| Affiliation: | 1. College of Chemistry and Life Science, Shenyang Normal University, Shenyang 110034, China;2. Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Collaborative Innovation Center of Chemical Science and Engineering, College of Chemistry, Nankai University, Tianjin 300071, China;3. Experimental Center, Shenyang Normal University, Shenyang 110034, China;1. Institute of Materials Science, Shanghai University, No. 149 Yanchang Road, Shanghai 200072, PR China;2. Key Laboratory of Nanomaterials, Qingdao University of Science and Technology, No. 53 Zhengzhou Road, Qingdao 266042, PR China;1. Shandong Provincial Key Laboratory Of Polymer Material Advanced Manufacturing Technology, College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao, 266061, PR China;2. State Key Laboratory Base of Eco-chemical Engineering, College of Chemical Engineering, Qingdao University of Science & Technology, Qingdao, 266042, PR China;3. College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao, 266042, PR China;4. College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, 266590, China |
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| Abstract: | In this study, it is aimed to investigate hydrogen (H2) generation from sodium borohydride (NaBH4) hydrolysis by multi-walled carbon nanotube supported platinum catalyst (Pt/MWCNT) under various conditions (0–0.03 g Pt amount catalyst, 2.58–5.03 wt % NaBH4, and 27–67 °C) in detail. For comparison, carbon supported platinum (Pt/C) commercial catalyst was used for H2 generation experiments under the same conditions. The reaction rate of the experiments was described by a power law model which depends on the temperature of the reaction and concentrations of NaBH4. Kinetic studies of both Pt/MWCNT and Pt/C catalysts were done and activation energies, which is the required minimum energy to overcome the energy barrier, were found as 27 kJ/mol and 36 kJ/mol, respectively. Pt/MWCNT catalyst is accelerated the reaction less than Pt/C catalyst while Pt/MWCNT is more efficient than Pt/C catalyst, they are approximately 98% and 95%, respectively. According to the results of experiments and the kinetic study, the reaction system based on NaBH4 in the presence of Pt/MWCNT catalyst can be a potential hydrogen generation system for portable applications of proton exchange membrane fuel cell (PEMFC). |
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| Keywords: | Hydrogen generation Sodium borohydride Hydrolysis Catalyst Pt/MWCNT |
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