Glycerol Dehydration and Consecutive Hydrogen Transfer to Allyl Alcohol over MoO3/SiO2 Catalyst

doi:10.7503/cjcu20120571

Abstract

Abstract:

A series of MoO₃/SiO₂ catalysts was prepared by impregnation and was employed to produce allyl alcohol from glycerol. The catalysts were characterized by X-ray diffraction(XRD), scanning electron microscope(SEM), N₂ Brunauer-Emmett-Teller(N₂-BET), NH₃ temperature programmed desorption(NH₃-TPD) and Fourier transform infrared spectroscopy(FTIR) of pyridine adsorption. From glycerol to allyl alcohol, the effects of catalyst loading, reaction temperature, glycerol concentration, and gas hourly space velocity(GHSV) on the catalytic performance of MoO₃/SiO₂ were investigated in a fix-bed reactor. Under the optimal reaction conditions of 1%(mass fraction) loading, reaction temperature of 330 ℃, atmospheric pressure, 40%(mass fraction) of glycerol concentration and GHSV of 200 h^-1, glycerol conversion, selectivity for allyl alcohol and the space time yield of allyl alcohol can be as high as 92.1%, 34.8% and 6.0 mmol·g^-1·h^-1, respectively.

Key words: Molybdenum trioxide, Silica, Glycerol, Allyl alcohol

CLC Number:

O643

TrendMD:

WANG Huan-Yi, LIU Tao, HE Zhan-Feng, WANG Xiao-Wei, CHEN Jun-He, WANG Juan-Yun, JIANG Yi. Glycerol Dehydration and Consecutive Hydrogen Transfer to Allyl Alcohol over MoO₃/SiO₂ Catalyst[J]. Chem. J. Chinese Universities, 2013, 34(3): 650.

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Glycerol Dehydration and Consecutive Hydrogen Transfer to Allyl Alcohol over MoO₃/SiO₂ Catalyst

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