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Catalysts 2017, 7(3), 88; doi:10.3390/catal7030088

The Role of Ruthenium in CO2 Capture and Catalytic Conversion to Fuel by Dual Function Materials (DFM)

1
Earth and Environmental Engineering, Columbia University in the City of New York, New York 10027, NY, USA
2
Chemical Engineering, Columbia University in the City of New York, New York 10027, NY, USA
*
Author to whom correspondence should be addressed.
Academic Editors: Albert Demonceau, Ileana Dragutan and Valerian Dragutan
Received: 7 February 2017 / Revised: 5 March 2017 / Accepted: 14 March 2017 / Published: 17 March 2017
(This article belongs to the Special Issue Ruthenium Catalysts)
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Abstract

Development of sustainable energy technologies and reduction of carbon dioxide in the atmosphere are the two effective strategies in dealing with current environmental issues. Herein we report a Dual Function Material (DFM) consisting of supported sodium carbonate in intimate contact with dispersed Ru as a promising catalytic solution for combining both approaches. The Ru-Na2CO3 DFM deposited on Al2O3 captures CO2 from a flue gas and catalytically converts it to synthetic natural gas (i.e., methane) using H2 generated from renewable sources. The Ru in the DFM, in combination with H2, catalytically hydrogenates both adsorbed CO2 and the bulk Na2CO3, forming methane. The depleted sites adsorb CO2 through a carbonate reformation process and in addition adsorb CO2 on its surface. This material functions well in O2- and H2O-containing flue gas where the favorable Ru redox property allows RuOx, formed during flue gas exposure, to be reduced during the hydrogenation cycle. As a combined CO2 capture and utilization scheme, this technology overcomes many of the limitations of the conventional liquid amine-based CO2 sorbent technology. View Full-Text
Keywords: supported Ru and sodium carbonate; dual function material; CO2 capture in flue gas; conversion to synthetic natural gas; redox properties of Ru supported Ru and sodium carbonate; dual function material; CO2 capture in flue gas; conversion to synthetic natural gas; redox properties of Ru
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Wang, S.; Schrunk, E.T.; Mahajan, H.; Farrauto, R.J. The Role of Ruthenium in CO2 Capture and Catalytic Conversion to Fuel by Dual Function Materials (DFM). Catalysts 2017, 7, 88.

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