Authors
Maxim E Grigorev, Stepan P Mikhailov, Alexey V Bykov, Alexander I Sidorov, Irina Yu Tiamina, Alexandre L Vasiliev, Linda Zh Nikoshvili, Valentina G Matveeva, Simoni M Plentz Meneghetti, Mikhail G Sulman, Esther M Sulman
Publication date
2021/10/15
Journal
Catalysis Today
Volume
378
Pages
167-175
Publisher
Elsevier
Description
Levulinic acid (LA) is one of the substances, which can be obtained from cellulosic biomass via acid hydrolysis and serves as a precursor in the synthesis of gamma-valerolactone (GVL) – platform chemical for so-called valeric fuels. This work is devoted to the study of catalytic conversion of LA to GVL using mono- (Ru) and bimetallic (Ru-Co) catalysts based on ruthenium-containing nanoparticles immobilized in hyper-crosslinked polystyrene (HPS). It was shown that RuO2 nanoparticles are an active phase of HPS-based Ru catalysts, which allow nearly 100 % yield of GVL at 120 °C and 2 MPa of hydrogen partial pressure for the reaction time 60 min. Introduction of cobalt in catalyst composition in a proper amount (Ru-to-Co weight ratio is 30) was found to result in Ru redistribution inside the polymeric support and, in turn, to the increase of reaction rate of LA hydrogenation.
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