LIQUID ORGANIC HYDROGEN CARRIER BASED ON SIDE PRODUCTS OF CAPROLACTAM PRODUCTION, ITS PRODUCTION METHOD, AND HYDROGEN CYCLE BASED ON IT Russian patent published in 2023 - IPC C01B3/26 C07C5/333 H01M8/00 

FIELD: hydrogen power engineering.

SUBSTANCE: invention relates to the field of hydrogen power engineering, specifically to a liquid organic hydrogen carrier (hereinafter – LOHC) consisting of bi- and tricyclic naphthene hydrocarbons. The carrier is obtained during hydration of oil produced by oxidation and dehydrogenating (hereinafter – POD), which is cyclohexanone condensation products – dianones contained in caprolactam production waste. A method for the production of LOHC is carried out by hydration of POD oil in the presence of a heterogenous catalyst, as a result of which a mixture of bicyclohexil and perhydroterphenyls is obtained, which is used for hydrogen extraction and its subsequent accumulation. A hydrogen cycle of the invention includes hydrogen binding and its release from LOHC in the presence of the heterogenous catalyst.

EFFECT: technology of production of a liquid organic hydrogen carrier, allowing for significant expansion of a raw material base, using a non-deficient side product of caprolactam production – cyclohexanone dimers and trimers; the resulting mixture is capable of releasing hydrogen at 300-350°C.

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