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Demonstration of thermochemical oxygen pumping for atmosphere control in reduction reactions

Brendelberger, Stefan and Vieten, Josua and Juttu Vidyasagar, Muralimohan and Roeb, Martin and Sattler, Christian (2018) Demonstration of thermochemical oxygen pumping for atmosphere control in reduction reactions. Solar Energy, 170, pp. 273-279. Elsevier. DOI: 10.1016/j.solener.2018.05.063 ISSN 0038-092X

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Official URL: https://www.sciencedirect.com/science/article/pii/S0038092X18304961


Solar thermochemical cycles as a means to produce fuels such as hydrogen, carbon monoxide, or syngas using a metal oxide as oxygen carrier offer a promising route to the efficient conversion and storage of solar energy. Even though the theoretical potential of such cycles can be very attractive, many challenges for reaching high process efficiencies remain unsolved. One challenging aspect is the parasitic energy cost for maintaining low partial pressures of oxygen during the reduction step. As previously proposed by the authors, thermochemical oxygen pumps have the theoretical potential to maintain low partial pressures of oxygen at considerably lower energy costs than conventional mechanical pumps. The work presented here demonstrates the proof of concept of thermochemical oxygen pumping. The reduction extents of a metal oxide after temperature swing experiments are analyzed for test runs with and without thermochemical oxygen pumping, clearly showing higher reduction extents for the former cases. The effects of different operational parameters on the reduction of the metal oxide are investigated and options for reduction extent enhancement are depicted.

Item URL in elib:https://elib.dlr.de/120146/
Document Type:Article
Title:Demonstration of thermochemical oxygen pumping for atmosphere control in reduction reactions
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Brendelberger, StefanStefan.Brendelberger (at) dlr.deUNSPECIFIED
Vieten, JosuaJosua.Vieten (at) dlr.deUNSPECIFIED
Juttu Vidyasagar, MuralimohanMuralimohan.JuttuVidyasagar (at) dlr.deUNSPECIFIED
Roeb, MartinMartin.Roeb (at) dlr.deUNSPECIFIED
Sattler, ChristianChristian.Sattler (at) dlr.dehttps://orcid.org/0000-0002-4314-1124
Date:17 May 2018
Journal or Publication Title:Solar Energy
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1016/j.solener.2018.05.063
Page Range:pp. 273-279
Keywords:Thermochemical cycle, Redox cycle, Reduction step, Oxygen partial pressure
HGF - Research field:Energy
HGF - Program:Renewable Energies
HGF - Program Themes:Solar Fuels
DLR - Research area:Energy
DLR - Program:E SW - Solar and Wind Energy
DLR - Research theme (Project):E - Solar Fuels
Location: Köln-Porz
Institutes and Institutions:Institute of Solar Research > Solar Chemical Engineering
Deposited By: Sattler, Prof. Dr. Christian
Deposited On:07 Jun 2018 10:09
Last Modified:07 Jun 2018 10:09

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