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The effect of temperature and initial methane concentration on carbon dioxide methanation on Ni based catalysts
University of Stavanger, Stavanger, Norway..
Mälardalen University, School of Business, Society and Engineering, Future Energy Center.ORCID iD: 0000-0002-6279-4446
2017 (English)In: Energy Procedia, ISSN 1876-6102, E-ISSN 1876-6102, Vol. 105, p. 2016-2021Article in journal (Refereed) Published
Abstract [en]

A series of Ni based catalysts prepared by incipient wetness method were characterized by chemisorption and studied for CO2 methanation. Ru had apparently a positive effect on the active metal surface area, and thus the catalytic activity. The CO2 conversion was greatly affected by temperature where the conversion ranged from 12%-85% at temperatures of 300 to 400 oC on the 12% Ni/Al2O3 catalyst. At 350 oC, higher Ni loading resulted in increased activity. The incorporation of 0.5% Ru lead to a drastic increase in catalytic activity, which can be explained by increased reducibility and a synergetic effect between Ni and Ru, and was further enhanced by increased Ni loading. Addition of CH4 at twice the initial concentration of CO2 to the feed gas mixture was found to decrease the conversion from 52% to 48% at 350 oC on the 20% Ni/Al2O3 catalyst, whereas only a slight reduction in selectivity was observed. The results preliminary demonstrate that high methane purity can be achieved from a biogas feed stream over Ni based catalysts. 

Place, publisher, year, edition, pages
2017. Vol. 105, p. 2016-2021
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:mdh:diva-37550DOI: 10.1016/j.egypro.2017.03.576Scopus ID: 2-s2.0-85020728141OAI: oai:DiVA.org:mdh-37550DiVA, id: diva2:1169115
Conference
8th International Conference on Applied Energy, ICAE 2016, 8 October 2016 through 11 October 2016
Available from: 2017-12-22 Created: 2017-12-22 Last updated: 2018-01-02Bibliographically approved

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