Choi, In Young Shin, Byeong Soo Kwak, Sang Kyu Kang, Kyung Soo Yoon, Chang Won Kang, Jeong Won 2024-01-20T04:02:11Z 2024-01-20T04:02:11Z 2021-09-05 2016-06-15 0360-3199 https://pubs.kist.re.kr/handle/201004/123961 Carbazole-based compounds are promising candidates for hydrogen storage materials, and recent research has focused on finding components with higher hydrogen storage capacity and desirable physical properties. In this paper, thermodynamic efficiencies of hydrogenation and dehydrogenation reactions were analyzed assuming an idealized process. The physical properties and thermodynamic efficiencies of three carbazole-based compounds (n-ethylcarbazole, n-propylcarbazole, n-acetylcarbazole) were investigated for use as liquid organic hydrogen carriers (LOHCs). Unavailable physical and thermodynamic properties were estimated using molecular modeling or group-contribution methods. Process simulations were performed for hydrogen storage and release processes using a commercial simulation package to evaluate the thermodynamic efficiencies of three candidate molecules. Even though there might be additional loss of exergy upon practical implementation of the whole process, the framework developed in this study can be useful for screening candidate LOHC molecules. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved. English PERGAMON-ELSEVIER SCIENCE LTD ACTIVATED CARBON CARRIERS DEHYDROGENATION HETEROCYCLES RUTHENIUM Thermodynamic efficiencies of hydrogen storage processes using carbazole-based compounds Article 10.1016/j.ijhydene.2016.04.118 1 INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, v.41, no.22, pp.9367 - 9373 INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 41 22 9367 9373 scie scopus 000378359300015 2-s2.0-84966570113 Chemistry, Physical Electrochemistry Energy & Fuels Chemistry Electrochemistry Energy & Fuels Article ACTIVATED CARBON CARRIERS DEHYDROGENATION HETEROCYCLES RUTHENIUM Hydrogen storage Liquid organic hydrogen carrier (LOHC) Carbazole