Structural analysis of Ru/Ce1-xZrxO2 catalysts for the carbon dioxide methanation

Authors

Nadezhda Kharchenko¹ , Vera Pakharukova¹ , Anna Gorlova¹ , Olga Stonkus² , Andrey Saraev² , Vladimir Rogozhnikov² , Dmitriy Potemkin²

1. Boreskov Institute of Catalysis, Novosibirsk, Russia; Novosibirsk State University, Novosibirsk
2. Boreskov Institute of Catalysis, Novosibirsk, Russia

Conference / event

8th Asian Symposium on Advanced Materials ASAM-8, July 2023 (Novosibirsk, Russian Federation)

Poster summary

Reduction of the amount of carbon dioxide emissions into the atmosphere is one of the eco-scientific challenges. The catalytic process of CO2 methanation is of practical importance due to its use for CO2 utilization with simultaneous synthesis of energy carrier, methane. Ruthenium-based catalysts, for example, Ru/CeO2 and Ru/Ce1-xZrxO2 are known to be highly active in methanation processes. However, there is little information about structure of ruthenium-containing particles due to their high dispersion. Such studies require the use of methods that allow to solve structure at the atomic. In this case, the X-ray atomic pair distribution function (PDF) analysis can be effective. This poster presents the results of structural studies of the supported Ru/Ce1-xZrxO2 heterogeneous catalysts. For this purpose, powder X-ray diffraction (XRD) methods and PDF analysis were used. Some attention is paid to the study on structural evolution of catalyst upon its activation via reduction with use of in-situ XRD.

Keywords

Ruthenium, Ce1-xZrxO2, X-ray atomic pair distribution function analysis, CO2 methanation, In situ XRD, Powder X-ray diffraction

Research areas

Material Sciences, Physics, Environmental Sciences

References

1. Kim A. et al. Mesoporous TiO2 support materials for Ru-based CO2 methanation catalysts //ACS Applied Nano Materials. – 2019. – Т. 2. – №. 5. – С. 3220–3230
2. López-Rodríguez S. et al. Effect of Ru loading on Ru/CeO2 catalysts for CO2 methanation //Molecular Catalysis. – 2021. – Т. 515. – С. 111911.
3. Rynkowski J. M. et al. Characterization of Ru/CeO2-Al2O3 catalysts and their performance in CO2 methanation //Reaction Kinetics and Catalysis Letters. – 2000. – Т. 71. – С. 55-64

Funding

1. Russian Science Foundation (No. 21–73–20075)

Supplemental files

No data provided

Additional information

Competing interests

No competing interests were disclosed.

Data availability statement

The datasets generated during and / or analyzed during the current study are available from the corresponding author on reasonable request.

Creative Commons license

Copyright © 2023 Kharchenko et al. This is an open access work distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.