Copper zinc oxide nanocatalysts grown on cordierite substrate for hydrogen production using methanol steam reforming |
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| Affiliation: | 1. Petrochemicals Division, National Research Institute for Chemical Technology, Zaria, Nigeria;2. Petroleum and Chemical Engineering, Sultan Qaboos University Muscat, Oman;3. Department of Physics, Sultan Qaboos University, Muscat, Oman;4. Department of Chemical Engineering, Ahmadu Bello University, Zaria, Nigeria;5. Functional Materials, Applied Physics Department, KTH Royal Institute of Technology, Sweden;1. Sahand University of Technology, P.O.Box 51335-1996, Sahand New Town, Tabriz, Iran;2. Reactor and Catalysis Research Center (RCRC), Sahand University of Technology, P.O.Box 51335-1996, Sahand New Town, Tabriz, Iran;1. Faculty of Light Industry and Chemical Engineering, Dalian Polytechnic University, 116023 Dalian, China;2. College of Life Sciences, Agricultural University of Hebei, 071001 Baoding, China;1. Department of Mechanical & Electrical Engineering, Xiamen University, Xiamen 361005, China;2. College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China;1. Department of Chemistry, National Cheng Kung University, Tainan 70101, Taiwan;2. Energy Saving & Monitoring Technology Department, Greenhouse Systems Technology Center, ITRI Central Region Campus, Taiwan |
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| Abstract: | Hydrogen production from methanol rather than the traditional source, methane, is considered to be advantageous in ease of transportation and storage. However, the current copper-based catalysts utilized in methanol steam reforming are associated with challenges of sintering at high temperature and production of CO which could poison fuel cells. In addressing these challenges, ZnO nanorods were grown hydrothermally on the surface of cordierite and impregnated with Cu to produce catalysts for methanol steam reforming. The catalysts were characterized using SEM, XRD, FTIR, XPS, BET and Raman Spectroscopy. A fixed-bed reactor was used for testing the catalysts while the reaction products were characterized using a GC fitted with FID and TCD. The effects of temperature, methanol concentration and particle size of catalysts on methanol steam reforming were investigated. The experiments were carried out between 180 and 350 °C. CO selectivity of 0% was observed for temperatures between 180 and 230 °C for 0.8 MeOH:1H2O with an average H2 selectivity of 98% for that temperature range. XPS showed that the catalyst was relatively unchanged after reaction while Raman spectroscopy revealed coke formation on the catalyst surface for reactions carried out above 300 °C. This shows that the catalyst is active and selective for the reaction. |
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| Keywords: | Hydrogen production Copper zinc oxide catalysts Methanol steam reforming Cordierite Nanocatalysts Nanorods |
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