Abstract
The gas-phase dehydration of glycerol was conducted over HPW/MCM-41 catalysts, which were prepared by impregnation of different amount of H3PW12O40 (HPW) on the MCM-41 support. The samples were characterized by XRD, N2 physisorption, FTIR, NH3-TPD, and pyridine-FTIR measurements. N2 physisorption results suggested that the uniform framework of MCM-41 could still be well maintained after modified with HPW. Pyridine-FTIR experiments indicate that HPW modified MCM-41 can generate rich Brønsted acid sites. Moreover, Brønsted acid sites facilitated to improve acrolein selectivity. Under the optimized reaction conditions: 40wt% HPW loading, 20% glycerol concentration, and 320 °C reaction temperature, the glycerol conversion and acrolein selectivity reach 85% and 80%, respectively.
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Funded by the National Natural Science Foundation of China (No. 21303154)
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Ding, J., Ma, T., Yun, Z. et al. Heteropolyacid (H3PW12O40) supported MCM-41: An effective solid acid catalyst for the dehydration of glycerol to acrolein. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 32, 1511–1516 (2017). https://doi.org/10.1007/s11595-017-1776-6
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DOI: https://doi.org/10.1007/s11595-017-1776-6