Dehydrogenation of methylcyclohexane using solid oxide fuel cell – A smart energy conversion

Akihiko Fukunaga, Asami Kato, Yuki Hara and Takaya Matsumoto

Applied Energy, 2023, vol. 348, issue C, No S0306261923008334

Abstract: Dehydrogenation of methylcyclohexane (MCH), a hydrogen carrier, is investigated using a solid oxide fuel cell (SOFC). When an SOFC is operated with a cell temperature of 420 °C and a current density of 16 mA cm−2, toluene and benzene, the products of MCH’s dehydrogenation reaction, are observed, with a molar ratio of 94:6. When the cell is operated at 490 °C and 90 mA cm−2, in addition of toluene and benzene, 1,4-dioxane is formed at a molar ratio of >86%, indicating an oxidative dehydrogenation reaction of MCH. These findings indicate that an SOFC successfully extracts electrons directly from MCH and generates electricity by utilizing the SOFC’s oxygen ion conduction function. The energy required for this process is expected to be less than that required for conventional MCH dehydrogenation. Furthermore, we reveal that SOFCs can be applied to the oxygen displacement reaction of benzene rings.

Keywords: Methylcyclohexane; Solid oxide fuel cell; Dehydrogenation; Direct power generation; Toluene (search for similar items in EconPapers)
Date: 2023
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DOI: 10.1016/j.apenergy.2023.121469

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