High quality H2-rich syngas production from pyrolysis-gasification of biomass and plastic wastes by Ni–Fe@Nanofibers/Porous carbon catalyst |
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| Affiliation: | 1. School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, PR China;2. Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing, Jiangsu 210096, PR China;1. State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, 430074 Wuhan, China;2. School of Engineering and Computer Science, University of Hull, Hull HU6 7RX, UK;3. School of Chemical and Process Engineering, University of Leeds, Leeds LS2 9JT, UK;1. Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, 510640, China;2. Key Laboratory of Renewable Energy, Chinese Academy of Sciences, Guangzhou, 510640, China;3. Guangdong Key Laboratory of New and Renewable Energy Research and Development, Guangzhou, 510640, China;4. Guangdong University of Technology, Guangzhou, 510006, China;1. Department of Environmental Engineering, National Chung Hsing University, Taichung 402, Taiwan, ROC;2. Department of Safety, Health, and Environmental Engineering, National United University, Miaoli, 360, Taiwan, ROC |
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| Abstract: | To produce the high quality H2-rich syngas from biomass and plastic wastes, a two-stage pyrolysis-gasification system involving pyrolysis and catalytic gasification is considered as a suitable route. Generally, synthesis of highly active, low cost and coke-resistant catalyst for tar cracking is the key factor. A series of monometallic catalysts of Ni@CNF/PCs and Fe@CNF/PCs and the bimetallic Ni–Fe@CNF/PCs catalyst were prepared by a simple one-step pyrolysis approach for high quality syngas production from pyrolysis-gasification of biomass and plastic wastes. The results indicated that the bimetallic Ni–Fe@CNF/PCs catalyst appeared as the optimal catalyst in affording the best compromise between catalytic activity and stability with the existence of the excellent dispersibility of the Fe0.64Ni0.36 alloy nanoparticles and the carbon nanofibers/porous carbon composite structure. In addition, the optimal operation conditions of biomass/plastic ratio of 1/2 and gasification temperature of 700 °C were observed for the bimetallic Ni–Fe@CNF/PCs catalyst to play best roles in the H2-rich syngas quality, with up to 33.66 mmol H2/g biomass, and tar yields as low as 5.66 mg/g. |
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| Keywords: | Syngas Pyrolysis-gasification Biomass Plastic Carbon-based catalyst |
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