Abstract
Vapor-phase dehydration of glycerol to produce acrolein was investigated at 320 °C over rare earth (including La, Ce, Nd, Sm, Eu, Gd, Tb, Ho, Er, Tm, Yb, Lu) pyrophosphates, which were prepared by precipitation method. The most promising catalysts were characterized by means of XRD, FT-IR, TG-DTA, BET and NH3-TPD measurements. The excellent catalytic performance of rare earth pyrophosphate depends on the appropriate surface acidity which can be obtained by the control of pH value in the precipitation and the calcination temperature, e.g. Nd4(P2O7)3 precipitated at pH = 6 and calcined at 500 °C in the catalyst preparation.
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Acknowledgments
We thank the Ministry of Science and Technology of China (973 program 2003CB615805) and the National Natural Science Foundation (20573103) for the support of this research.
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Liu, Q., Zhang, Z., Du, Y. et al. Rare Earth Pyrophosphates: Effective Catalysts for the Production of Acrolein from Vapor-phase Dehydration of Glycerol. Catal Lett 127, 419–428 (2009). https://doi.org/10.1007/s10562-008-9723-y
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DOI: https://doi.org/10.1007/s10562-008-9723-y