2003 · 40 citations · 0 references
EngineeringOrganic ChemistryChemistryChemical EngineeringGlycosylationCatalytic ApplicationIndustrial CatalysisCatalysisCatalytic ProcessChemical TechnologyCatex Amberlyst 15Catalytic SynthesisZeolite CatalystsEtherification Of GlycerolCombustion ScienceAmberlyst 15Catalyst PreparationChemical KineticsHydrothermal Processing
The etherification of glycerol with tert-butanol has been studied at the presence of catex Amberlyst 15 as catalyst. The maximum conversion of glycerol near 96% was reached at the temperature 90°C and at the molar ratio tert-butanol/glycerol = 4:1 after 180 min. Catalytic activity of Amberlyst 15 was compared with two large-porous zeolites (H-Y and H-BEA). The final conversion of glycerol was compa- rable with Amberlyst 15, but H-BEA was more active (twice amount of formed di-ethers near 45% against 25% with Amberlyst) was reached at 360 min of reaction. Dealkylation of di-ethers was not observed over zeolite catalysts. tert-Butyl ethers of glycerol can be used as oxygenate additives to diesel fuel.