A Novel Eutectic Mixture of Biphenyl and Diphenylmethane as a Potential Liquid Organic Hydrogen Carrier: Catalytic Hydrogenation

Authors
Han, Da JungJo, Young SukShin, Byeong SooJang, MunjeongKang, Jeong WonHan, Jong HeeNam, Suk WooYoon, Chang Won
Issue Date
2019-01
Publisher
WILEY-V C H VERLAG GMBH
Citation
ENERGY TECHNOLOGY, v.7, no.1, pp.113 - 121
Abstract
A novel, liquid-phase hydrogen storage material was produced by mixing biphenyl (C12H10, solid) and diphenylmethane (C13H12, liquid) with a mass ratio (wt %) of 35:65. The eutectic mixture was proved to be liquid at ambient temperature with a viscosity of 3.0 cP at 25 degrees C and a vapor pressure of 1.4 Pa at 25 degrees C, which potentially meets the requirements for an efficient hydrogen storage system. A theoretical study using COSMO-RS method further confirms that an optimum composition of biphenyl and diphenylmethane for the formation of eutectic mixture is 37:63 by mass, which is very close to the composition found experimentally. The eutectic mixture exhibited a superior activity for hydrogenation reactions conducted at 120 degrees C under 50 bar of H-2 pressure in the presence of a Ru (5 wt %)/Al2O3 catalyst. Hydrogen uptake of the eutectic mixture tested was close to full conversion, which corresponds to 6.9 wt % and 60.1 g L-1 of gravimetric and volumetric hydrogen storage capacities, respectively.
Keywords
STORAGE; RUTHENIUM; RELEASE; STORAGE; RUTHENIUM; RELEASE; biphenyl/diphenylmethane; heterogeneous catalysis; hydrogenation; organic hydrogen energy carrier; sustainable chemistry
ISSN
2194-4288
URI
https://pubs.kist.re.kr/handle/201004/120541
DOI
10.1002/ente.201700694
Appears in Collections:
KIST Article > 2019
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