A Novel Process for Renewable Methane Production: Combining Direct Air Capture by K2CO3/Alumina Sorbent with CO2 Methanation over Ru/Alumina Catalyst

A Novel Process for Renewable Methane Production: Combining Direct Air Capture by K2CO3/Alumina... CO methanation over supported ruthenium catalysts is considered to be a promising process for carbon capture and utili- zation and power-to-gas technologies. In this work 4% Ru/Al O catalyst was synthesized by impregnation of the support 2 3 with an aqueous solution of Ru(OH)Cl , followed by liquid phase reduction using NaBH and gas phase activation using the 3 4 stoichiometric mixture of CO and H (1:4). Kinetics of CO methanation reaction over the Ru/Al O catalyst was studied 2 2 2 2 3 in a perfectly mixed reactor at temperatures from 200 to 300 °C. The results showed that dependence of the specific activity of the catalyst on temperature followed the Arrhenius law. C O conversion to methane was shown to depend on temperature, water vapor pressure and CO :H ratio in the gas mixture. The Ru/Al O catalyst was later tested together with the K CO / 2 2 2 3 2 3 Al O composite sorbent in the novel direct air capture/methanation process, which combined in one reactor consecutive 2 3 steps of C O adsorption from the air at room temperature and C O desorption/methanation in H flow at 300 or 350 °C. It 2 2 2 http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Topics in Catalysis Springer Journals

A Novel Process for Renewable Methane Production: Combining Direct Air Capture by K2CO3/Alumina Sorbent with CO2 Methanation over Ru/Alumina Catalyst

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Publisher
Springer US
Copyright
Copyright © 2018 by Springer Science+Business Media, LLC, part of Springer Nature
Subject
Chemistry; Catalysis; Physical Chemistry; Pharmacy; Industrial Chemistry/Chemical Engineering; Characterization and Evaluation of Materials
ISSN
1022-5528
eISSN
1572-9028
D.O.I.
10.1007/s11244-018-0997-z
Publisher site
See Article on Publisher Site

Abstract

CO methanation over supported ruthenium catalysts is considered to be a promising process for carbon capture and utili- zation and power-to-gas technologies. In this work 4% Ru/Al O catalyst was synthesized by impregnation of the support 2 3 with an aqueous solution of Ru(OH)Cl , followed by liquid phase reduction using NaBH and gas phase activation using the 3 4 stoichiometric mixture of CO and H (1:4). Kinetics of CO methanation reaction over the Ru/Al O catalyst was studied 2 2 2 2 3 in a perfectly mixed reactor at temperatures from 200 to 300 °C. The results showed that dependence of the specific activity of the catalyst on temperature followed the Arrhenius law. C O conversion to methane was shown to depend on temperature, water vapor pressure and CO :H ratio in the gas mixture. The Ru/Al O catalyst was later tested together with the K CO / 2 2 2 3 2 3 Al O composite sorbent in the novel direct air capture/methanation process, which combined in one reactor consecutive 2 3 steps of C O adsorption from the air at room temperature and C O desorption/methanation in H flow at 300 or 350 °C. It 2 2 2

Journal

Topics in CatalysisSpringer Journals

Published: May 31, 2018

References

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