Vapour phase dehydration of glycerol over VPO catalyst supported on zirconium phosphate

An Overview of Recent Research in the Conversion of Glycerol into Biofuels, Fuel Additives and other Bio-Based Chemicals

“…Sulfuric acid has been used as catalyst to convert glycerol in hot compressed water to acrolein. Rajan et al [157] obtained up to 74% selectivity to acrolein under supercritical conditions with the sulfuric acid catalyst within reaction time of 12 s. TiO 2 and WO 3 /TiO 2 in supercritical water at 400 • C and 33 MPa was examined using a fixed-bed flow reactor [158]. It was observed that the supercritical condition changed the structure of TiO 2 from anatase to rutile type.…”

Gas phase dehydration of glycerol to acrolein catalyzed by zirconium phosphate

“…Taking into account catalyst separation, recovery, and apparatus corrosion, it is preferable to carry out the dehydration reactions in the gas phase over a solid acid catalyst. In the last decade, supported heteropolyacids [9][10][11][12][13], supported WO3 [14,15], Zr-Nb mixed oxides [16], zeolites [17,18], sulfonic acid-functionalized SBA-15 [19], and metal phosphates [20][21][22][23][24] have been shown to exhibit high catalytic activities. High acro-lein selectivity (90-100 mol%) along with complete glycerol conversion was reported for rubidium-and caesium-doped silicotungstic acid catalysts supported on alumina [25].…”

Conversion of biomass to chemicals over zirconium phosphate-based catalysts

“…Copyright 2015, Elsevier. nadium orthophosphate [47]. The supported VPO catalysts gave better conversions and selectivities for acrolein than the pure VPO catalyst because of their appropriate acidic properties, higher surface area, i.e., 152 m 2 /g, and higher pore diameter, i.e., 7.4 nm.…”