MUMBAI, India, Nov. 14 -- Intellectual Property India has published a patent application (202517070103 A) filed by Eco-Oil Miljobranslen I Sverige AB, Skelleftea, Sweden, on July 23, for 'process for continuous hydrogenation of aqueous levulinic acid to gamma-valerolactone and its tandem conversion to high octane gasoline range hydrocarbons.'
Inventor(s) include Mikkola, Jyri-Pekka; Samikannu, Ajaikumar; Konwar, Lakhya Jyoti; Siljebo, William; and Van Klint, Kent.
The application for the patent was published on Nov. 14, under issue no. 46/2025.
According to the abstract released by the Intellectual Property India: "A Ru-loaded carbon material with characteristic surface chemistry (Bronsted acidic phosphate groups, Lewis basic N-groups selected from the group consisting of Lewis basic pyridinic, pyrrolic and quaternary N-groups and oxygen functional groups) is shown to exhibit excellent activity, selectivity and stability upon hydrogenation of aqueous levulinic acid (0.47 M and 0.95 M) to ?-valerolactone with near stoichiometric H2 under mild conditions (80-95 C). The material demonstrated remarkable stability in a fixed-bed reactor under continuous flow conditions, maintaining high activity, and ?-valerolactone selectivity during ~1250 h time on stream operating at 3-5 bar, 80-95 C and low H2/levulinic acid ratio (4-17). The exceptional catalytic performance and stability of the multifunctional Ru-catalyst was attributed to the unique surface chemistry of carbon support that stabilized the Ru nanoparticles on the surface nitrogen and oxygen defects, and promoted 4-hydroxypentanoic acid cyclization over acidic phosphate and RuOx/RuO2 sites."
The patent application was internationally filed on Jan. 29, 2024, under International application No.PCT/EP2024/052108.
Disclaimer: Curated by HT Syndication.
