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Methanation of carbon dioxide over zirconium-tin oxide-based catalyst

Naoyoshi Nunotani

https://orcid.org/0000-0001-5497-9777

Department of Applied Chemistry, Faculty of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan

E-mail Address: nunotani@chem.eng.osaka-u.ac.jp

Corresponding author.

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Yuki Ogino

Department of Applied Chemistry, Faculty of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan

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Nobuhito Imanaka

https://orcid.org/0000-0003-1243-9099

Department of Applied Chemistry, Faculty of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan

Present address: Research Center for Environmental Preservation, Osaka University, 2-4 Yamadaoka, Suita, Osaka 565-0871, Japan.

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https://doi.org/10.1142/S1793604725500122Cited by:0 (Source: Crossref)

Abstract

An advanced catalyst, Ni/ZrSn $_{0.90}$ Ce $_{0.10}$ O₄/ $γ$ -Al₂O₃, was synthesized for the methanation of CO₂ under moderate conditions of atmospheric pressure and low H₂ concentration (4 vol%). The use of scrutinyite-type ZrSn $_{0.90}$ Ce $_{0.10}$ O₄ improved the catalytic activity, likely because of abundant oxygen vacancies for CO₂ adsorption and good redox properties for cleavage of the C-O bond of adsorbed CO₂. The CH₄ yield of 18 wt.% Ni/20 wt.% ZrSn $_{0.90}$ Ce $_{0.10}$ O₄/ $γ$ -Al₂O₃ reached 61.0% with high CO₂ conversion (58.4%) at $35 0^{\circ}$ C using 1 vol% CO₂-4vol% H₂-95 vol% Ar at atmospheric pressure.