MUMBAI, India, Feb. 27 -- Intellectual Property India has published a patent application (202541134185 A) filed by Rajalakshmi Engineering College, Chennai, Tamil Nadu, on Dec. 31, 2025, for 'lohc system for the reversible hydrogen storage in quinaldine 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 5 using quinaldine as a liquid organic hydrogen carrier (LOHC). The process is carried out in a high-temperature and high-pressure reactor, wherein quinaldine is subjected to catalytic hydrogenation in the presence of an osmium catalyst supported on aluminum oxide under controlled temperature and hydrogen pressure to form hydrogenated quinaldine capable of storing hydrogen. The hydrogenated quinaldine is subsequently subjected to catalytic 10 dehydrogenation at elevated temperature in the presence of an osmium-based catalyst to release molecular hydrogen and regenerate quinaldine for reuse. The process enables efficient hydrogen storage with a hydrogen capacity of approximately 8 weight percent and allows repeated hydrogenation-dehydrogenation cycles under moderate operating conditions, making it suitable for industrial hydrogen storage and energy applications."

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