Jang, Munjeong Shin, Byeong Soo Jo, Young Suk Kang, Jeong Won Kwak, Sang Kyu Yoon, Chang Won Jeong, Hyangsoo 2024-01-19T18:02:33Z 2024-01-19T18:02:33Z 2021-09-05 2020-03 2095-4956 https://pubs.kist.re.kr/handle/201004/118904 Hydrogen storage in Liquid Organic Hydrogen Carrier (LOHC) systems is appealing for the safe storage and distribution of excess renewable energy via existing gasoline infrastructures to end-users. We present the eutectic mixture of biphenyl and diphenyl ether of its first use as a LOHC material. The material is hydrogenated with 99% selectivity without the cleavage of C-O bond, with commercial heterogeneous catalysts, which is confirmed by nuclear magnetic spectroscopy and gas chromatography-mass spectrometry. Equilibrium concentration, dehydrogenation enthalpy, and thermo-neutral temperature are calculated using a density functional theory. The results indicate that O-atom-containing material exhibits more favorable dehydrogenation thermodynamics than that of the hydrocarbon analogue. The H-2-rich material contains 6.8 wt% of gravimetric hydrogen storage capacity. A preliminary study of catalytic dehydrogenation on a continuous reactor is presented to demonstrate a reversibility of this material. (C) 2019 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. and Science Press. All rights reserved. English ELSEVIER STORAGE CARRIERS CAPACITY A study on hydrogen uptake and release of a eutectic mixture of biphenyl and diphenyl ether Article 10.1016/j.jechem.2019.05.024 1 JOURNAL OF ENERGY CHEMISTRY, v.42, pp.11 - 16 JOURNAL OF ENERGY CHEMISTRY 42 11 16 scie scopus 000497954500003 2-s2.0-85067503149 Chemistry, Applied Chemistry, Physical Energy & Fuels Engineering, Chemical Chemistry Energy & Fuels Engineering Article STORAGE CARRIERS CAPACITY Hydrogen storage Liquid organic hydrogen carrier Diphenyl ether Dehydrogenation Thermodynamics