Collateral hydrogenation over proton-conducting Ni/BaZr0.85Y0.15O3-delta catalysts for promoting CO2 methanationopen access
- Authors
- Choi, Sungjun; Choi, Sung Min; Yoon, Kyung Joong; Son, Ji-Won; Lee, Jong-Ho; Kim, Byung-Kook; Sang, Byoung-In; Kim, Hyoungchul
- Issue Date
- 2018
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- RSC ADVANCES, v.8, no.56, pp.32095 - 32101
- Indexed
- SCIE
SCOPUS
- Journal Title
- RSC ADVANCES
- Volume
- 8
- Number
- 56
- Start Page
- 32095
- End Page
- 32101
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/33010
- DOI
- 10.1039/c8ra06226a
- ISSN
- 2046-2069
- 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/BaZr0.85Y0.15O3- 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 degrees 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.
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