MUMBAI, India, Feb. 27 -- Intellectual Property India has published a patent application (202541134183 A) filed by Rajalakshmi Engineering College, Chennai, Tamil Nadu, on Dec. 31, 2025, for 'lohc system for the reversible hydrogen storage in alkyldecalin and the manufacturing method thereof.'

Inventor(s) include Dr. K. L. Vincent Joseph; and Dr. N. T. Mary Rosana.

The application for the patent was published on Feb. 27, under issue no. 09/2026.

According to the abstract released by the Intellectual Property India: "The present invention relates to a process for reversible hydrogen storage and regeneration using a liquid organic hydrogen carrier (LOHC). The process employs 2-methylnaphthalene as the hydrogen carrier and is carried out in a high-temperature, high-pressure stainless steel reactor equipped with a heating coil, a mechanical stirrer, and a hydrogen purging mechanism. In the hydrogenation step, 1.4 kg of 2-methylnaphthalene is hydrogenated at 118 oc and 7 bar 1 n in the presence of 0.18 mol% rhenium catalyst supported on aluminum oxide for 9 hours, resulting in a hydrogenated product capable of storing 7 wt% hydrogen. Hydrogen regeneration is achieved by dehydrogenating the hydrogenated carrier at 158 C for 14 hours using 0.42 mol% rhenium catalyst supported on aluminum oxide, thereby releasing the stored hydrogen. The disclosed process enables efficient and reversible hydrogen storage and release and is 15 suitable for hydrogen-on-demand applications and sustainable energy systems."

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