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Efficiency assessment of solar redox reforming in comparison to conventional reforming

Holzemer-Zerhusen, Philipp and Brendelberger, Stefan and von Storch, Henrik and Roeb, Martin and Sattler, Christian and Pitz-Paal, Robert (2020) Efficiency assessment of solar redox reforming in comparison to conventional reforming. International Journal of Hydrogen Energy, 45 (7), pp. 4137-4151. Elsevier. doi: 10.1016/j.ijhydene.2019.12.065. ISSN 0360-3199.

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Official URL: https://www.sciencedirect.com/science/article/abs/pii/S0360319919345987?via%3Dihub


Solar redox reforming is a process that uses solar radiation to drive the production of syngas from natural gas. This approach caught attention in recent years, because of substantially lower reduction temperatures compared to other redox cycles. However, a detailed and profound comparison to conventional solar reforming has yet to be performed. We investigate a two-step redox cycle with iron oxide and ceria as candidates for redox materials. Process simulations were performed to study both steam and dry methane reforming. Conventional solar reforming of methane without a redox cycle, i.e. on an established catalyst was used as reference. We found the highest efficiency of a redox cycle to be that of steam methane reforming with iron oxide. Here the solar-to-fuel efficiency is 43.5% at an oxidation temperature of 873 K, a reduction temperature of 1190 K, a pressure of 3 MPa and a solar heat flux of 1000 kW/m2. In terms of efficiency, this process appears to be competitive with the reference process. In addition, production of high purity H2 or CO is a benefit, which redox reforming has over the conventional approach.

Item URL in elib:https://elib.dlr.de/135154/
Document Type:Article
Title:Efficiency assessment of solar redox reforming in comparison to conventional reforming
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Holzemer-Zerhusen, PhilippPhilipp.Holzemer-Zerhusen (at) dlr.deUNSPECIFIED
Brendelberger, StefanStefan.Brendelberger (at) dlr.deUNSPECIFIED
von Storch, HenrikHenrik.vonStorch (at) dlr.dehttps://orcid.org/0000-0002-7067-5957
Roeb, MartinMartin.roeb (at) dlr.dehttps://orcid.org/0000-0002-9813-5135
Sattler, ChristianChristian.Sattler (at) dlr.dehttps://orcid.org/0000-0002-4314-1124
Pitz-Paal, RobertRobert.Pitz-Paal (at) dlr.dehttps://orcid.org/0000-0002-3542-3391
Date:7 February 2020
Journal or Publication Title:International Journal of Hydrogen Energy
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1016/j.ijhydene.2019.12.065
Page Range:pp. 4137-4151
Keywords:Reforming Redox cycle Synthesis gas Ceria Iron oxide Solar fuels
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 (old)
Location: Jülich , Köln-Porz
Institutes and Institutions:Institute of Solar Research > Solar Chemical Engineering
Institute of Solar Research > Leitungsbereich Solarforschung
Deposited By: Sattler, Prof. Dr. Christian
Deposited On:09 Oct 2020 10:35
Last Modified:23 Feb 2021 12:20

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