[Show abstract][Hide abstract] ABSTRACT: Vegetable oils and fats are important renewable raw materials for use by the biodiesel industry. One drawback of this industry
is the large amounts of glycerol produced as a by-product. Consequently, crude glycerol is moving from a by-product to a residue.
New industrial applications for this substance are required. A conversion of this by-product to allyl esters using various
fatty materials in a two-step process is reported: After a simultaneous alcoholysis–chlorination reaction of vegetable oils
and fats without a solvent, allyl esters were synthesized in a high yield by a rearrangement–elimination reaction using n-butanol
as a solvent. All the reactions could be carried out using conventional heating or microwave irradiation with comparable results.
Microwave irradiation allows for an important reduction in the reaction time.
KeywordsGlycerol–Biodiesel–Vegetable oils–Animal fats–Raw materials–Allyl esters
Full-text · Article · May 2012 · Waste and Biomass Valorization