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- W1504238452 abstract "Abstract BACKGROUND Aluminosilicate catalysts have the potential to promote the formation of oxygenated derivatives from carbohydrates in a hydrothermolysis reaction. Levulinic acid ( LA ) can be obtained from glucose, sucrose and starch hydrothermolysis reactions, and is a very versatile building block for diverse organic synthetic compounds. In this work, the catalytic performance of Ni‐ or Ru‐doped aluminum‐loaded SBA ‐15 (Al‐ SBA ‐15) was compared with ZSM ‐5 catalyst in order to achieve high LA selectivity. RESULTS All catalytic hydrothermolysis reactions tested gave remarkably higher LA selectivity than non‐catalytic reactions for every carbohydrate substrate used. The acid contents and porous properties are important keys to control yield and selectivity of LA . The highest selectivity of LA (44%) was attained from glucose hydrothermolysis at 200 °C (for 1 h) using a 15 wt% loading of the 20 wt% Ru‐doped ZSM ‐5 catalyst. CONCLUSION Moderately raising Ru in ZSM ‐5 and Al‐ SBA ‐15 catalysts increased the levels of LA . The MFI structure of ZSM ‐5 is suitable for hydrothermolysis of glucose monosaccharide, while the hexagonal mesoporous structure of Al‐ SBA ‐15 is preferred for starch polysaccharide hydrothermolysis at the optimum condition. © 2012 Society of Chemical Industry" @default.
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- W1504238452 date "2012-12-17" @default.
- W1504238452 modified "2023-10-17" @default.
- W1504238452 title "Hydrothermolysis of carbohydrates to levulinic acid using metal supported on porous aluminosilicate" @default.
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- W1504238452 doi "https://doi.org/10.1002/jctb.4000" @default.
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