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Facts and prospects on solar thermochemical processes applying redox materials

Roeb, Martin and Brendelberger, Stefan and Vieten, Josua and Sattler, Christian (2017) Facts and prospects on solar thermochemical processes applying redox materials. 21st International Conference on Solid State Ionics, 18.-23. Jun. 2017, Padua, Italien.

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Official URL: G:\7_SF-SOL\Projekt SolarSynGas\Publikationen\2017\SSI Padua July 2017


Thermochemical redox reactions play in essential role in a number of processes for solar energy conversion to store energy or to use it for the production of commodities and fuels. Such reactions can be used to enhance the availability of solar energy in terms of energy transport, of energy demand/supply management and of potential energy related applications. Suitable sequences of endothermal and exothermal thermochemical reaction enable the production of fuels like hydrogen or syngas and other fuels by water- and CO2-splitting as well as the storage of solar energy by breaking and forming chemical bonds in suitable reversible reactions. The energy source for the endothermal steps is concentrated solar radiation. The concentrated solar energy is converted into storable and transportable chemicals and fuels. If the oxidation step of the cycle is carried out with air instead of water/CO2 the sequence of redox reactions can be applied for air separation opening pathways to solar oxygen and nitrogen production and from there further on to ammonia and fertilizer production. One of the major barriers to technological success of many of those processes is the identification of suitable active redox materials exhibiting satisfactory durability, reactivity and efficiencies. Besides materials aspects also process engineering issues needs to be overcome. Challenges are to couple an intermittent energy source to a chemical process and to efficiently recover high temperature heat. The most promising processes and the main applications are being described and discussed with respect to further development and future potential. Technical approaches and development progress in terms of solving them are addressed and assessed.

Item URL in elib:https://elib.dlr.de/117141/
Document Type:Conference or Workshop Item (Speech)
Title:Facts and prospects on solar thermochemical processes applying redox materials
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Roeb, MartinMartin.Roeb (at) dlr.deUNSPECIFIED
Brendelberger, StefanStefan.Brendelberger (at) dlr.deUNSPECIFIED
Vieten, JosuaJosua.Vieten (at) dlr.deUNSPECIFIED
Sattler, ChristianChristian.Sattler (at) dlr.dehttps://orcid.org/0000-0002-4314-1124
Date:22 June 2017
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:Redox materials, thermochemical processes, concentrated solar radiation
Event Title:21st International Conference on Solid State Ionics
Event Location:Padua, Italien
Event Type:international Conference
Event Dates:18.-23. Jun. 2017
Organizer:Internation Society for Solid State Ionics
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: Köln-Porz
Institutes and Institutions:Institute of Solar Research > Solar Chemical Engineering
Deposited By: Sattler, Prof. Dr. Christian
Deposited On:18 Dec 2017 11:57
Last Modified:18 Dec 2017 11:57

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