• aqueous phase reactions of pentoses in the presence of nanocrystalline zeolite beta: identification of by-products and kinetic modelling

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/01/01
    • تاریخ انتشار در تی پی بین: 1392/01/01
    • تعداد بازدید: 605
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    • شماره تماس دبیرخانه رویداد: -
     furfural, a valuable platform chemical that has the potential to replace a variety of oil/coal/gas derived materials and chemical products, is produced by the dehydration of d-xylose, which in turn is obtained from lignocellulosic biomass. herein, the conversion of xylose in the presence of nanocrystalline zeolite beta in the h+-form, using water as solvent, was investigated. detailed batch kinetic studies and products identifications techniques (1h, 13c nmr and comprehensive two-dimensional gas chromatography (gc × gc) combined with time-of-flight mass spectrometry (tofms)) provided mechanistic insights into the overall reaction process. the conversion of xylose to furfural is accompanied by several side reactions, forming complex reaction mixtures. a pseudo-homogeneous kinetic model was proposed that fitted quite well the experimental data.

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