Heterogeneous-catalytic reaction of hydrogenation-dehydrogenation of aromatic compounds as the basis of accumulation, storage, and production of chemically pure hydrogen

The quality of hydrogen released from naphthenic substrates (bicyclohexyl, ortho-, meta-, and para-isomers of perhydroterphenyl) as a result of catalytic dehydrogenation over 3% Pt/C (sibunit) is studied as a key criterion for the high degree of regeneration and recyclization of hydrogen storage systems. It is shown that chemically pure hydrogen without impurities of methane and carbon oxides can be obtained by the dehydrogenation of liquid organic hydrogen carriers (LOHC) if the initial aromatic hydrocarbons and the naphthenic substrates obtained from them were previously thoroughly thermally treated before the hydrogenation and dehydrogenation reactions, respectively, in an inert gas.