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Title: Promising catalytic systems for CO<inf>2</inf> hydrogenation into CH<inf>4</inf>: A review of recent studies
Authors: Bacariza, M. Carmen
Spataru, Daniela
Karam, Leila
Lopes, José M.
Henriques, Carlos
Affiliations: Faculty of Engineering 
Keywords: Active metals
CO2 conversion
CO2 methanation
Heterogeneous catalysts
Reaction mechanism
Sabatier reaction
Issue Date: 2020-01-01
Part of: Processes
Volume: 8
Issue: 12
Start page: 1
End page: 45
The increasing utilization of renewable sources for electricity production turns CO2 methanation into a key process in the future energy context, as this reaction allows storing the temporary renewable electricity surplus in the natural gas network (Power-to-Gas). This kind of chemical reaction requires the use of a catalyst and thus it has gained the attention of many researchers thriving to achieve active, selective and stable materials in a remarkable number of studies. The existing papers published in literature in the past few years about CO2 methanation tackled the catalysts composition and their related performances and mechanisms, which served as a basis for researchers to further extend their in-depth investigations in the reported systems. In summary, the focus was mainly in the enhancement of the synthesized materials that involved the active metal phase (i.e., boosting its dispersion), the different types of solid supports, and the frequent addition of a second metal oxide (usually behaving as a promoter). The current manuscript aims in recapping a huge number of trials and is divided based on the support nature: SiO2, Al2 O3, CeO2, ZrO2, MgO, hydrotalcites, carbons and zeolites, and proposes the main properties to be kept for obtaining highly efficient carbon dioxide methanation catalysts.
DOI: 10.3390/pr8121646
Open URL: Link to full text
Type: Journal Article
Appears in Collections:Department of Chemical Engineering

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