Issue 56, 2018, Issue in Progress

Collateral hydrogenation over proton-conducting Ni/BaZr0.85Y0.15O3−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/BaZr0.85Y0.15O3−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.

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

Supplementary files

Article information

Article type
Paper
Submitted
23 Jul 2018
Accepted
10 Sep 2018
First published
17 Sep 2018
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2018,8, 32095-32101

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

S. Choi, S. M. Choi, K. J. Yoon, J. Son, J. Lee, B. Kim, B. Sang and H. Kim, RSC Adv., 2018, 8, 32095 DOI: 10.1039/C8RA06226A

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