Method for carbon dioxide splitting
| DWPI Title: Splitting of carbon dioxide involves heating metal oxide compound comprising metal oxide, reacting metal oxide which oxidizes with carbon dioxide, producing carbon monoxide gas and oxide compound and separating carbon monoxide gas |
| Abstract: A method for splitting carbon dioxide via a two-step metal oxide thermochemical cycle by heating a metal oxide compound selected from an iron oxide material of the general formula AxFe3-xO4, where 0≦x≦1 and A is a metal selected from Mg, Cu, Zn, Ni, Co, and Mn, or a ceria oxide compound of the general formula MaCebOc, where 0<a<1, 0<b<1, and 0<c<2, where M is a metal selected from the group consisting of at least one of a rare earth metal and an alkaline earth metal, to a temperature greater than approximately 1400° C., thereby producing a first solid-gas mixture, adding carbon dioxide, and heating to a temperature less than approximately 1400 C, thereby producing carbon monoxide gas and the original metal oxide compound. |
| Use: Splitting of carbon dioxide (claimed). |
| Advantage: The method produces increased yield of carbon monoxide product. |
| Novelty: Splitting of carbon dioxide involves heating a metal oxide compound (m1) to 1400° C at which the metal (m1) reduces and producing a solid-gas mixture comprising a metal oxide (m2) and oxygen, reacting metal oxide (m2) with carbon dioxide at 1100° C at which metal oxide (m2) oxidizes and producing carbon monoxide gas and the oxide compound (m1) and separating carbon monoxide gas. The oxide compound (m1) comprising a metal oxide chosen from cobalt iron oxide/yttria-stabilized zirconia (YSZ) and cerium zirconium oxide. |
| Filed: 5/27/2009 |
| Application Number: US2009472445A |
| Tech ID: SD 10596.1 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
| Data from Derwent World Patents Index, provided by Clarivate All rights reserved. Republication or redistribution of Clarivate content, including by framing or similar means, is prohibited without the prior written consent of Clarivate. Clarivate and its logo, as well as all other trademarks used herein are trademarks of their respective owners and used under license. |