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

Title
Collateral hydrogenation over proton-conducting Ni/BaZr0.85Y0.15O3-delta catalysts for promoting CO2 methanation
Authors
김병국이종호김형철손지원윤경중최성민최성준상병인
Keywords
CO2 methanation; proton conductor; Sabatier reaction; hydrogenation; catalyst
Issue Date
2018-09
Publisher
RSC advances
Citation
VOL 8-32101
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/BaZr0.85Y0.15O3d 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.
URI
http://pubs.kist.re.kr/handle/201004/68204
ISSN
2046-2069
Appears in Collections:
KIST Publication > Article
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