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-

SUBMITTER: Choi S 

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

REPOSITORIES: biostudies-literature