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Commercial 65% Ni/SiO2–Al2O3 (Ni/SA) catalyst was investigated for hydrocyclisation of levulinic acid (LA) to γ-valerolactone (Gvl) in presence of different hydrogen sources such as molecular hydrogen, isopropyl alcohol (IPA), and formic acid. At optimized reaction condition (200 °C, 10 bar H2 for 30 min), the Ni/SA catalyst showed 100% yield of Gvl using molecular H2 in tetrahydrofuran (THF) medium...
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