Collateral hydrogenation over proton-conducting Ni/BaZr(0.85)Y(0.15)O(3−δ) catalysts for promoting CO(2) methanation

Despite the importance of CO(2) methanation for eco-friendly carbon-neutral fuel recycling, the current technologies, relying on catalytic hydrogenation over metal-based catalysts, face technological and economical limitations. Herein, we employ the steam hydrogenation capability of proton conductor...

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Detalles Bibliográficos
Autores principales: Choi, Sungjun, Choi, Sung Min, Yoon, Kyung Joong, Son, Ji-Won, Lee, Jong-Ho, Kim, Byung-Kook, Sang, Byoung-In, Kim, Hyoungchul
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2018
Materias:
Chemistry
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9086213/
https://www.ncbi.nlm.nih.gov/pubmed/35547521
http://dx.doi.org/10.1039/c8ra06226a
Descripción
Sumario:Despite the importance of CO(2) methanation for eco-friendly carbon-neutral fuel recycling, the current technologies, relying on catalytic hydrogenation over metal-based catalysts, face technological and economical limitations. Herein, we employ the steam hydrogenation capability of proton conductors to achieve collateral CO(2) methanation over the Ni/BaZr(0.85)Y(0.15)O(3−δ) catalyst, which is shown to outperform its conventional Ni/Al(2)O(3) counterpart in terms of CH(4) yield (8% higher) and long-term stability (3% higher for 150 h) at 400 °C while exhibiting a CH(4) selectivity above 98%. Moreover, infrared and X-ray photoelectron spectroscopy analyses reveal the appearance of distinct mobile proton-related OH bands during the methanation reaction.

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