title: Evaluation of industrially applied heat-transfer fluids as liquid organic hydrogen carrier systems.
abstract: Liquid organic hydrogen carrier (LOHC) systems offer a very attractive method for the decentralized storage of renewable excess energy. In this contribution, industrially well-established heat-transfer oils (typically sold under trade names, e.g., Marlotherm) are proposed as a new class of LOHC systems. It is demonstrated that the liquid mixture of isomeric dibenzyltoluenes (m.p. -39 to -34 °C, b.p. 390 °C) can be readily hydrogenated to the corresponding mixture of perhydrogenated analogues by binding 6.2 wt% of H2. The liquid H2 -rich form can be stored and transported similarly to diesel fuel. It readily undergoes catalytic dehydrogenation at temperatures above 260 °C, which proves its applicability as a reversible H2 carrier. The presented LOHC systems are further characterized by their excellent technical availability at comparably low prices, full registration of the H2 -lean forms, and excellent thermal stabilities.
authors: Lehrstuhl für Chemische Reaktionstechnik, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstr. 3, 91058 Erlangen (Germany).
authors: Nicole
authors: N
authors: Brückner
authors: Katharina
authors: K
authors: Obesser
authors: Andreas
authors: A
authors: Bösmann
authors: Daniel
authors: D
authors: Teichmann
authors: Wolfgang
authors: W
authors: Arlt
authors: Jennifer
authors: J
authors: Dungs
authors: Peter
authors: P
authors: Wasserscheid
mesh_terms: D001555:Benzene Derivatives / Q000737:chemistry*; D004560:Electricity; D006358:Hot Temperature; D006859:Hydrogen / Q000737:chemistry*
chemical_list: D001555:Benzene Derivatives; D006859:Hydrogen
keywords: dehydrogenation; energy conversion; hydrocarbons; hydrogen storage; sustainable chemistry