Hydrogen via methane decomposition: an application for decarbonization of fossil fuels |
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| Affiliation: | 1. JARA – ENERGY, 52056 Aachen, Germany;2. AVT Process Systems Engineering, RWTH Aachen University, Forckenberstr. 51, 52056 Aachen, Germany;3. Chair of Heterogeneous Catalysis and Chemical Technology, Institut für Technische und Makromolekulare Chemie, RWTH Aachen University, Worringerweg 2, 52074 Aachen, Germany;4. Chair of Technical Thermodynamics, RWTH Aachen University, Schinkelstraße 8, 52062 Aachen, Germany;5. Institute for Future Energy Consumer Needs and Behavior, E.ON Energy Research Center/School of Business and Economics, RWTH Aachen University, Mathieustr. 10, 52074 Aachen, Germany;1. Department of Mechanical Engineering, University of Alberta, Edmonton, AB, Canada;2. Energy Systems Design Laboratory, Department of Mechanical Engineering, University of Alberta, Edmonton, AB, Canada;3. InnoTech Alberta, Karl Clark Road, Edmonton, AB, Canada;1. Institute for Advanced Sustainability Studies, Berliner Strasse 130, 14467 Potsdam, Germany;2. Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany;3. Universidad Politécnica de Madrid, c/José Gutiérrez Abascal 2, 28006 Madrid, Spain;1. Catalyst and Advanced Materials Research Laboratory, Chemical Engineering Department, Faculty of Engineering, University of Kashan, Kashan, Iran;2. Institute of Nanoscience and Nanotechnology, University of Kashan, Kashan, Iran;1. Catalyst and Advanced Materials Research Laboratory, Chemical Engineering Department, Faculty of Engineering, University of Kashan, Kashan, Iran;2. Institute of Nanoscience and Nanotechnology, University of Kashan, Kashan, Iran |
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| Abstract: | Fossil fuel decarbonization is an emerging technological approach for significant reduction of CO2 emissions into the atmosphere. CO2-free production of hydrogen via thermocatalytic decomposition of methane (natural gas) as a viable decarbonization strategy is discussed in this paper. The technical approach is based on a single-step decomposition (pyrolysis) of methane and other hydrocarbons over carbon-based catalysts in an air/water free environment. This approach eliminates the need for water–gas shift and CO2 removal stages, required by conventional processes (e.g. methane steam reforming), which significantly simplifies the process. Clean carbon is produced as a valuable byproduct of the process. The experimental data on the catalytic activity of different carbon-based catalysts in methane decomposition reaction are presented in this work. The paper also discusses various conceptual designs for the reactor suitable for decomposition of methane with production of hydrogen-rich gas and continuous withdrawal of elemental carbon. |
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