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Catalysts 2017, 7(2), 59; doi:10.3390/catal7020059

Supported Catalysts for CO2 Methanation: A Review

1
Civil Engineering, Energy, Environmental and Materials Department, University Mediterranea of Reggio Calabria, 89134 Reggio Calabria, Italy
2
Consorzio Interuniversitario per la Scienza e la Tecnologia dei Materiali—INSTM, 50121 Firenze, Italy
3
Environmental&Chemical Engineering Department, University of Calabria, 87036 Rende, Italy
4
Consiglio Nazionale delle Ricerche—Istituto di Tecnologie Avanzate per l’Energia “Nicola Giordano”, IT-98126 Messina, Italy
*
Author to whom correspondence should be addressed.
Academic Editors: Benoît Louis, Qiang Wang and Marcelo Maciel Pereira
Received: 16 December 2016 / Revised: 7 February 2017 / Accepted: 8 February 2017 / Published: 13 February 2017
View Full-Text   |   Download PDF [2171 KB, uploaded 13 February 2017]   |  

Abstract

CO2 methanation is a well-known reaction that is of interest as a capture and storage (CCS) process and as a renewable energy storage system based on a power-to-gas conversion process by substitute or synthetic natural gas (SNG) production. Integrating water electrolysis and CO2 methanation is a highly effective way to store energy produced by renewables sources. The conversion of electricity into methane takes place via two steps: hydrogen is produced by electrolysis and converted to methane by CO2 methanation. The effectiveness and efficiency of power-to-gas plants strongly depend on the CO2 methanation process. For this reason, research on CO2 methanation has intensified over the last 10 years. The rise of active, selective, and stable catalysts is the core of the CO2 methanation process. Novel, heterogeneous catalysts have been tested and tuned such that the CO2 methanation process increases their productivity. The present work aims to give a critical overview of CO2 methanation catalyst production and research carried out in the last 50 years. The fundamentals of reaction mechanism, catalyst deactivation, and catalyst promoters, as well as a discussion of current and future developments in CO2 methanation, are also included. View Full-Text
Keywords: carbon dioxide; methane; metal catalysts; hydrogenation; power-to-gas carbon dioxide; methane; metal catalysts; hydrogenation; power-to-gas
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Frontera, P.; Macario, A.; Ferraro, M.; Antonucci, P. Supported Catalysts for CO2 Methanation: A Review. Catalysts 2017, 7, 59.

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