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Fuel production by reduction of CO2 using concentrated sunlight

Call, Friedemann and Roeb, Martin and Sattler, Christian and Pitz-Paal, Robert and Bru, Hélène and Curulla Ferre, Daniel (2012) Fuel production by reduction of CO2 using concentrated sunlight. 15th International Congress on Catalysis, 01.-06. Jul. 2012, München.

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Synthesis gas (syngas, CO:H2 1:2) as an intermediate product is an universal precursor for the production of a very broad variety of chemical substances like gaseous and liquid synthetic fuels, polymers, ammonia, methanol, etc. In order to cover the required heat demand for the generation of carbon monoxide (CO) solely from carbon dioxide (CO2), employing concentrated solar energy may be a viable alternative to the state-of-the-art methods like steam reforming or partial oxidation of fossil resources. This emission-free CO production may be carried out in a two-step thermochemical cycle using an oxide material as the catalyst. The two steps are: Regeneration of the metal oxide (MO) (1200 - 1400 °C): MOox = MOred + O2 Splitting of CO2 into CO (700 to 1000 °C): MOred + CO2 = MOox + CO For this thermochemical cycle, redox materials will be identified, synthesized and tested in lab-scale experiments. Materials for two-step CO2-splitting cycles The criteria of CO2 splitting have been estimated by theoretical considerations and thermo-chemical calculations of simple metal oxide materials yielded suitable material groups for further investigations. Outlook In coming thermo-gravimetric and tube furnace experiments, selected material groups will be tested and optimized in terms of efficiency and long-term stability. Especially, ceria and ferrites seem promising to yield good experimental results. In addition, substrate and reactor technology are crucial for this thermochemical cycle and will be addressed in the second phase of this project.

Item URL in elib:https://elib.dlr.de/77580/
Document Type:Conference or Workshop Item (Poster)
Title:Fuel production by reduction of CO2 using concentrated sunlight
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Sattler, ChristianSFUNSPECIFIED
Bru, HélèneTotal S.A.UNSPECIFIED
Curulla Ferre, DanielTotal S.A.UNSPECIFIED
Date:July 2012
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:synthesis gas; thermochemical cycle; concentrated solar power; redox materials; thermodynamics
Event Title:15th International Congress on Catalysis
Event Location:München
Event Type:international Conference
Event Dates:01.-06. Jul. 2012
Organizer:Dechema e.V.
HGF - Research field:Energy
HGF - Program:Renewable Energies
HGF - Program Themes:E SF - Solar research (old)
DLR - Research area:Energy
DLR - Program:E SF - Solar research
DLR - Research theme (Project):E - Solare Verfahrenstechnik (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Solar Research > Solare Verfahrenstechnik
Deposited By: Call, Friedemann
Deposited On:08 Oct 2012 11:08
Last Modified:08 Oct 2012 11:08

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