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Erschienen in:
2015 | OriginalPaper | Buchkapitel
One Pot Synthesis of γ-Valerolactone from D-Glucose Over H3PW12O40/ZrO2 Catalyst
verfasst von : Dorairaaj Sivasubramaniam, Nor Aishah Saidina Amin
Erschienen in: ICGSCE 2014
Verlag: Springer Singapore
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Abstract
In this study, two different wt% of H3PW12O40/ZrO2 catalysts were synthesized, characterized and screened for the synthesis of γ-valerolactone (GVL) from D-glucose. The catalysts involved were 10 % H3PW12O40/ZrO2 and 15 % H3PW12O40/ZrO2 prepared through wet impregnation method. Catalyst characterization using FTIR, BET and NH3-TPD revealed that the catalytic performances were dominantly influenced by the acid sites of the catalyst in the production of Levulinic acid (LA) from D-glucose via acid hydrolysis reaction. High acidity greatly influenced the catalytic performance for the production of GVL. These catalysts were tested based on five sets of reaction time (8, 10, 12, 14 and 16 h) at a fixed temperature of 180 °C with 1:1 catalyst to feedstock ratio. 10 % H3PW12O40/ZrO2 exhibited high performance at 16 h of reaction time with 22.3 % yield compared to 15 % H3PW12O40/ZrO2 with only 14.8 % yield of GVL.