Glucose reactions with acid and base catalysts in hot compressed water at 473 K |
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Authors: | Watanabe Masaru Aizawa Yuichi Iida Toru Aida Taku M Levy Caroline Sue Kiwamu Inomata Hiroshi |
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Institution: | Research Center of Supercritical Fluid Technology, Tohoku University, 6-6-11-403 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan. |
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Abstract: | The effects of the homogeneous catalysts (H(2)SO(4) and NaOH) and heterogeneous catalysts (TiO(2) and ZrO(2)) on glucose reactions were examined in hot compressed water (473 K) by a batch-type reactor. From the homogeneous catalyst studies, we confirmed that the acid catalyst promoted dehydration, while isomerization of glucose to fructose was catalyzed by alkali. Anatase TiO(2) was found to act as an acid catalyst to promote formation of 5-hydroxymethylfuraldehyde (HMF). Zirconia (ZrO(2)) was a base catalyst to promote the isomerization of glucose. The effects of the additives were also confirmed through fructose reactions. |
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Keywords: | Glucose HMF Fructose TiO2 ZrO2 Acid Alkali |
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