Catalytic Dehydration of Glycerol to Acrolein over Aluminum Phosphate Catalysts

Gas phase conversion of glycerol to acrolein over a variety of aluminum phosphate (AlP) catalysts synthesized by a simple replacement reaction method with a variation in calcination temperature (300-700 ºC, AlP-300, AlP-400, AlP-500, AlP-600, and AlP-700, respectively) has been investigated. The textural properties, acidities and coke contents of the samples were also determined. The catalysts were presented in an amorphous state when the AlP sample was calcined below 500 ºC. Further increasing the calcination temperature promoted the formation of orthorhombic α-AlPO4 crystal. The weak acid...