Details

Autor(en) / Beteiligte

• Lott, Patrick
• Mokashi, Manas B.
• Müller, Heinz
• Heitlinger, Dominik J.
• Lichtenberg, Sven
• Shirsath, Akash B.
• Janzer, Corina
• Tischer, Steffen
• Maier, Lubow
• Deutschmann, Olaf

Titel

Hydrogen Production and Carbon Capture by Gas‐Phase Methane Pyrolysis: A Feasibility Study

Ist Teil von

• ChemSusChem, 2023-03, Vol.16 (6), p.e202201720-n/a

Ort / Verlag

Germany: Wiley Subscription Services, Inc

Erscheinungsjahr

2023

Quelle

Wiley Online Library - AutoHoldings Journals

Beschreibungen/Notizen

• Using natural gas and sustainable biogas as feed, high‐temperature pyrolysis represents a potential technology for large‐scale hydrogen production and simultaneous carbon capture. Further utilization of solid carbon accruing during the process (i. e., in battery industry or for metallurgy) increases the process's economic chances. This study demonstrated the feasibility of gas‐phase methane pyrolysis for hydrogen production and carbon capture in an electrically heated high‐temperature reactor operated between 1200 and 1600 °C under industrially relevant conditions. While hydrogen addition controlled methane conversion and suppressed the formation of undesired byproducts, an increasing residence time decreased the amount of byproducts and benefited high hydrogen yields. A temperature of 1400 °C ensured almost full methane conversion, moderate byproduct formation, and high hydrogen yield. A reaction flow analysis of the gas‐phase kinetics revealed acetylene, ethylene, and benzene as the main intermediate products and precursors of carbon formation. Methane pyrolysis: High‐temperature pyrolysis of natural gas and sustainable biogas represents a potential technology for large‐scale hydrogen production and simultaneous carbon capture. The study reports on gas‐phase methane pyrolysis in an electrically heated high‐temperature reactor operated between 1200 and 1600 °C. A systematic process operation parameter variation and a reaction flow analysis of the gas‐phase kinetics provide guidance for process design.