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Dual function materials for CO₂ capture and conversion using renewable H₂

Duyar, Melis S., Treviño, M.A.A. and Farrauto, R.J. (2015) Dual function materials for CO₂ capture and conversion using renewable H₂ Applied Catalysis B: Environmental, 168. pp. 370-376.

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The accumulation of CO₂ emissions in the atmosphere due to industrialization is being held responsible for climate change with increasing certainty by the scientific community. In order to prevent its further accumulation in the atmosphere, CO₂ must be captured for storage or converted to useful products. Current materials and processes for CO₂ capture are energy intensive. We report a feasibility study of dual function materials (DFM), which capture CO₂ from an emission source and at the same temperature (320 °C) in the same reactor convert it to synthetic natural gas, requiring no additional heat input. The DFM consists of Ru as methanation catalyst and nano dispersed CaO as CO₂ adsorbent, both supported on a porous γ-Al₂O₃ carrier. A spillover process drives CO₂ from the sorbent to the Ru sites where methanation occurs using stored H₂ from excess renewable power. This approach utilizes flue gas sensible heat and eliminates the current energy intensive and corrosive capture and storage processes without having to transport captured CO₂ or add external heat.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Chemical and Process Engineering
Authors :
Duyar, Melis
Treviño, M.A.A.
Farrauto, R.J.
Date : June 2015
DOI : 10.1016/j.apcatb.2014.12.025
Uncontrolled Keywords : Carbon neutrality; CO2 adsorption; CO2 capture; CO2 utilization; Dual function material; Methanation; RuCaO/γ-Al₂O₃
Depositing User : Clive Harris
Date Deposited : 12 Jun 2019 12:09
Last Modified : 12 Jun 2019 12:09

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