NDLI: Kinetics of CO2 methanation over a Ni/alumina industrial catalyst

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Kinetics of CO2 methanation over a Ni/alumina industrial catalyst

Content Provider	Semantic Scholar
Author	Martins, Rogéria Paula Amaral, Bingre Do Henriques, Carlos Doutora, Professora Ribeiro, Filipa Thomas, Doutor Sébastien
Copyright Year	2016
Abstract	The increase of the consumption of renewable energies creates challenges concerning the storage of the excess of electricity produced to fill the gaps where there is no production. Currently, the biggest ongoing project to the efficient use of renewable energies, Power-to-Gas, consists in electrolyze water with the excess of electricity to produce oxygen and hydrogen. With hydrogen it is possible to react with carbon dioxide (one of the biggest world pollutants) to produce methane. This work focused in the kinetic study and modelling of this reaction (CO2 methanation) and also of the parallel reactions (CO methanation and reverse water-gas shift) over an industrial nickel/alumina catalyst. Initially it was made a bibliographic study of the several works made in CO2 methanation mainly in nickel catalyst. Several different reaction mechanisms were found to the reactions in study, taking into account the type of catalyst used and the kinetic model that best describe the behaviour of the reactions. Several techniques of characterization of the catalyst were realized in order to better know the optimal conditions of work. Then it was made catalytic tests to evaluate the influence of the products and reactants involved in the reaction rate. All the experimental data were tested in the models found in literature. Finally it was proposed a kinetic model for the three reactions and the correspondent parameters calculated. It was also proposed a mechanism for each reaction. .
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://fenix.tecnico.ulisboa.pt/downloadFile/281870113703497/Article%20Rogeria%20Amaral.pdf
Alternate Webpage(s)	https://fenix.tecnico.ulisboa.pt/downloadFile/281870113703495/Dissertacao%20Rogeria%20Amaral.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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