Catalytic Dehydration of Glycerol Over Silica and Alumina‐Supported Heteropoly Acid Catalysts

Studies on a niobia-supported VPO catalyst for glycerol dehydration

“…6 Acrolein is a valuable chemical intermediate and raw ingredient for many processes like acrylic acid esters, ultra-absorbent polymers, detergents, fiber treatment, and other high-value derivatives. 7 The prior research has investigated that zeolites, 7 metal oxides, 8 metal phosphates, 9 heteropoly acids on various substrates, 10 and WO 3 –ZrO 2 11 have been used to dehydrate glycerol. VPO is widely recognized as a catalyst for producing maleic anhydride from selective oxidation of n -butane 12 in the industry.…”

“…There are some research groups that reported the supported catalytic system of metal oxides and heteropoly acids for vapour phase glycerol dehydration reaction. 7–10 Our group also studied the VPO catalyst supported on zirconium phosphate and found that the supported VPO catalyst gave better activity due to a higher amount of moderate acidic sites and suitable redox sites. 17 In general, using a supported catalyst during glycerol dehydration improves active phase dispersion, pore size distribution, and catalytic acidity.…”