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SUMMARY:Materials and Engineering related Aspects of Solar Thermochemical 
 Processes
DTSTART:20180308T121500
DTEND:20180308T131500
DTSTAMP:20260609T214958Z
UID:7199e9e559d628d1d816c8d999cd650d59ba5b58d800b2a11d657854
CATEGORIES:Conferences - Seminars
DESCRIPTION:Martin Roeb\, German Aerospace Center\, Institute of Solar Res
 earch\, Koeln\, Germany Bio : Martin Roeb is a researcher\, project coordi
 nator\, and team leader at DLR Köln\, in the Solar Research group. His re
 search focuses on solar generation and upgrading of fuels – in particula
 r hydrogen and syngas – using high temperature processes like thermochem
 ical cycles\, high temperature electrolysis\, steam and dry reforming of h
 ydrocarbons\, or cracking of hydrocarbons. Research interests also include
  solar treatment of residues and wastes\, solar recycling\, solar smelting
 \, solar production of mass and fine chemicals\, solar reduction von metal
  oxides\, and solar processing of ores. He received his diploma (1993) and
  PhD with distinction (1997) from University of Köln. Between 1998 and 19
 99\, he was a researcher at University of Stuttgart. He has published over
  110 articles in peer-reviewed journals and conference proceedings. He rec
 eived the Eco Tech Award 2005\, Technical Achievement Award of the Interna
 tional Partnership for the Hydrogen Economy (2006)\, and the Descartes Res
 earch Prize 2006 of the EU.\nAbstract : Thermochemical reactions play in e
 ssential role in a number of processes for solar energy conversion to stor
 e energy or to use it for the production of commodities and fuels. Such re
 actions can be used to enhance the availability of solar energy in terms o
 f energy transport\, of energy demand/supply management and of potential e
 nergy related applications. Suitable sequences of endothermal and exotherm
 al 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 revers
 ible reactions. The most prominent cycles are based on the use of either m
 ultivalent metal oxides or sulfur oxides. The energy source for the endoth
 ermal 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 t
 he sequence of redox reactions can be applied for air separation opening p
 athways to solar oxygen and nitrogen production and from there further on 
 to ammonia and fertilizer production. One of the major barriers to technol
 ogical success of many of those processes is the identification of suitabl
 e materials\, mainly redox materials or catalysts\, exhibiting satisfactor
 y durability\, (re)activity and efficiencies. Besides materials aspects al
 so process engineering issues needs to be overcome. Challenges are to coup
 le an intermittent energy source to a chemical process and to efficiently 
 recover high temperature heat. The most promising processes and the main a
 pplications are being described and discussed with respect to further deve
 lopment and future potential. Technical approaches and development progres
 s in terms of solving them are addressed and assessed.\n 
LOCATION:MED 2 1522 https://plan.epfl.ch/?room=MED21522
STATUS:CONFIRMED
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