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Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/220552
Minimizing Energy Demand in the Conversion of LevulinicAcid to ‑Valerolactone via Photothermal Catalysis UsingRaney Ni
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The valorization of lignocellulosic wastes emerges as a prime strategy tomitigate the global carbon footprint. Among the multiple biomass derivatives, -valerolactone is particularly attractive as precursor of high-value chemicals,biofuel, green solvent or perfumery. -Valerolactone can be synthesizedthrough a hydrogenation reaction from levulinic acid, obtained from cellulose.However, the high energy requirements of this synthetic pathway havehindered its industrial viability. To drastically reduce the reaction energyrequirements, here a novel synthetic strategy, based onsolvothermal-photothermal processes using cost-effective Raney-Ni asphotothermal catalyst, is proposed. First, the use of hydrogen gas is avoidedby selecting isopropanol as a safer and greener H-source. Second, aphotothermocatalytic process is used to minimize the reaction temperatureand time with respect to conventional reactions. This approach exploits thebroadband optical absorption of the Raney®-Ni, due to its highly dampedplasmonic behavior, to achieve fast and efficient catalyst heating inside thereactor. The photothermal reaction required less than 2 h and just 132 °C toreach over 95% conversion, thereby drastically reducing the reaction time andenergy consumption compared to conventional reactions. Importantly, theseconditions granted high catalyst reusability. This solvothermal-photothermalapproach could offer a sustainable alternative for the industrial production of -valerolactone.
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BUJALDÓN CARBÓ, Roger, et al. Minimizing Energy Demand in the Conversion of LevulinicAcid to ‑Valerolactone via Photothermal Catalysis UsingRaney Ni. Advanced Science. 2025. Vol. 2416153. ISSN 2198-3844. [consulted: 6 of October of 2026]. Available at: https://hdl.handle.net/2445/220552