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Ru nanoparticles supported on amorphous ZrO2 for CO2 methanation

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Abstract

The influence of support materials and preparation methods on CO2 methanation activity was investigated using Ru nanoparticles supported on amorphous ZrO2 (am-ZrO2), crystalline ZrO2 (cr-ZrO2), and SiO2. Among them, Ru/am-ZrO2 showed high CO2 methanation activity. Of note, Ru/am-ZrO2 prepared by a selective deposition method was superior to that prepared by a wet impregnation method. This is because the Ru nanoparticles were highly dispersed when prepared by the selective deposition method, as evidenced by XPS. Interestingly, when NaOH solution was used as a pH adjuster for the selective deposition method, Ru/am-ZrO2 catalysts activated the formate species (one of the important reaction intermediates of CO2 methanation), leading to high CO2 conversion (73%, 250 °C).

Graphical abstract: Ru nanoparticles supported on amorphous ZrO2 for CO2 methanation

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Supplementary files

Article information


Submitted
06 Feb 2020
Accepted
29 Apr 2020
First published
30 Apr 2020

Catal. Sci. Technol., 2020, Advance Article
Article type
Paper

Ru nanoparticles supported on amorphous ZrO2 for CO2 methanation

H. Nagase, R. Naito, S. Tada, R. Kikuchi, K. Fujiwara, M. Nishijima and T. Honma, Catal. Sci. Technol., 2020, Advance Article , DOI: 10.1039/D0CY00233J

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