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Hydrogen Production from the LOHC Perhydro-Dibenzyl-Toluene and Purification using a 5 µm PdAg-Membrane in a coupled Microstructured System

Wunsch, A.; Berg, T.; Pfeifer, P.

Abstract:
Hydrogen bound in organic liquid hydrogen carriers (LOHC) such as dibenzyl-toluene enables simple and safe handling as well as long-term storage. This idea is particularly interesting in the context of the energy transition, where hydrogen is considered a key energy carrier. The LOHC technology serves as a storage between volatile energy and locally and timely independent consumption. Depending on the type of application, decisive specifications are placed on the hydrogen purity. In the product gas from dehydrogenation, however, concentrations of 100 to a few 1000 ppm can be found from low boiling substances, which partly originate from the production of the LOHC material, but also from the decomposition and evaporation of the LOHC molecules in the course of the enormous volume expansion due to hydrogen release. For the removal of undesired traces in the LOHC material, a pre-treatment and storage under protective gas is necessary. For purification, the use of Pd-based membranes might be useful, which makes these steps less important or even redundant. Heat supply and phase contacting of the liquid LOHC and catalyst is also crucial for the process. ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000104708
Veröffentlicht am 10.01.2020
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Mikroverfahrenstechnik (IMVT)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2020
Sprache Englisch
Identifikator ISSN: 1996-1944
KITopen-ID: 1000104708
HGF-Programm 37.03.02 (POF III, LK 01)
Components and Process Development
Erschienen in Materials
Band 13
Heft 2
Seiten Art. Nr.: 277
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Gefördert vom Ministerium für Wissenschaft, Forschung und Kunst Baden-Württemberg (MWK) im Rahmen des Open-Access-Förderprogramms "BW BigDIWA"
Vorab online veröffentlicht am 08.01.2020
Schlagwörter LOHC, LOHC-Dehydrogenation, PdAg-membranes; micro reactor, hydrogen purification
Nachgewiesen in Scopus
Web of Science
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