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Collateral hydrogenation over proton-conducting Ni/BaZr_0.85Y_0.15O_3-δ catalysts for promoting CO₂ methanation.

ABSTRACT: Despite the importance of CO₂ 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 CO₂ methanation over the Ni/BaZr_0.85Y_0.15O_3-δ catalyst, which is shown to outperform its conventional Ni/Al₂O₃ counterpart in terms of CH₄ yield (8% higher) and long-term stability (3% higher for 150 h) at 400 °C while exhibiting a CH₄ 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.

SUBMITTER: Choi S

PROVIDER: S-EPMC9086213 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature

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Collateral hydrogenation over proton-conducting Ni/BaZr0.85Y0.15O3-δ catalysts for promoting CO2 methanation.

Choi Sungjun S Choi Sung Min SM Yoon Kyung Joong KJ Son Ji-Won JW Lee Jong-Ho JH Kim Byung-Kook BK Sang Byoung-In BI Kim Hyoungchul H

RSC advances 20180917 56

Despite the importance of CO2 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 CO2 methanation over the Ni/BaZr0.85Y0.15O3-δ catalyst, which is shown to outperform its conventional Ni/Al2</s ...[more]

PMID: 35547521

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