Effect of the support properties in dehydrogenation of biphenyl-based eutectic mixture as liquid organic hydrogen carrier (LOHC) over Pt/Al2O3 catalysts

Title
Effect of the support properties in dehydrogenation of biphenyl-based eutectic mixture as liquid organic hydrogen carrier (LOHC) over Pt/Al2O3 catalysts
Authors
남석우김용민윤창원정향수손현태조영석안창일박용하김아름문성은곽연수
Issue Date
2021-02
Publisher
Fuel
Citation
VOL 284, 119285
Abstract
Biphenyl-based eutectic mixture (BPDM, 35 wt% Biphenyl, and 65 wt% Diphenylmethane) has gained attraction as a strong candidate for liquid organic hydrogen carriers (LOHC) particularly due to the high hydrogen capacity (6.9 wt%). To take full advantage of its capacity, facile and high-extent dehydrogenation with reversibility is the key, where the appropriate selection of supports in heterogeneous catalysts plays a crucial role. Herein, the effect of the properties of commercial Al2O3 pellets in the dehydrogenation reaction of a hydrogenated biphenyl-based mixture (H12-BPDM) over Pt/Al2O3 catalysts is investigated. H2 production rate, 10 h performance tests, and product composition from the dehydrogenation of H12-BPDM are evaluated with the in-house catalytic screening tests using continuous fixed-bed reactors. Catalyst characterization and product analysis suggest that pore size distributions and corresponding surface properties of Al2O3 supports can lead to different dehydrogenation reaction characteristics of H12-BPDM. This study provides a rationale for the proper support selection for efficient utilization of BPDM as a LOHC.
URI
http://pubs.kist.re.kr/handle/201004/72183
ISSN
0016-2361
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KIST Publication > Article
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