CO2-free hydrogen production via microwave-driven methane pyrolysis |
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| Affiliation: | 1. Department of Mechanical & Industrial Engineering, University of Toronto, Toronto, Ontario, Canada;2. Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta, Canada;1. Bob L. Herd Department of Petroleum Engineering, Texas Tech University, 2500 Broadway, Lubbock, TX 79409, USA;2. Merton College, University of Oxford, Merton Street, Oxford, OX1 4JD, UK;3. Department of Geosciences, Texas Tech University, 2500 Broadway, Lubbock, TX 79409, USA;4. Department of Electrical & Computer Engineering, Texas Tech University, 2500 Broadway, Lubbock, TX 79409, USA;5. Department of Chemical and Biomedical Engineering, West Virginia University, 1374 Evansdale Drive, Morgantown, WV 26506, USA;1. Department of Chemical Engineering and Applied Chemistry, University of Toronto, 200 College Street. Toronto, ON, Canada, M5S 3E5;2. Deptartment of Civil & Mineral Engineering, University of Toronto, 35 St. George Street. Toronto, ON Canada M5S 1A4 |
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| Abstract: | Hydrogen will play an integral role in achieving net-zero emissions by 2050. Many studies have been focusing on green hydrogen, but this method is highly electricity intensive. Alternatively, methane pyrolysis can produce hydrogen without direct CO2 emissions and with modest electricity inputs, serving as a bridge from fossil fuels to renewable energies. Microwaves are an efficient method of adding the required energy for this endothermic reaction. This study introduces a new method of CO2-free hydrogen production via non-plasma methane pyrolysis using microwaves and carbon products of this process. Carbon particles in the fluidized bed absorb microwave energy and create a hot medium (>1200 °C) in contact with flowing methane. As a result, methane decomposes into hydrogen and solid carbon achieving over 90% hydrogen selectivity with ∼500 cumulative hours of experiments This modular pyrolysis system can be built anywhere with access to natural gas and electricity, enabling distributed hydrogen production. |
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| Keywords: | Hydrogen production Clean hydrogen Methane pyrolysis Microwave-driven pyrolysis Distributed hydrogen Fluidized bed |
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