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oai:recercat.cat:10459.1/583902025-02-03T08:00:08Zcom_2072_3622col_2072_479130

00925njm 22002777a 4500 dc Escribà i Gelonch, Marc author Eras i Joli, Jordi author Villorbina Noguera, Gemma author Balcells Fluvià, Mercè author Blanch, C. author Barniol, N. author Canela i Garayoa, Ramon author 2016-11-04T13:30:27Z 2025-01-01 2011 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. This work was supported in part by a Grant-in-Aid for the Secretaría de Estado de Política Científica y Tecnológica of the Spanish Ministry of Education and Culture (Contract grant number: CTQ2006-07451). The authors are grateful to the Comissionat per a Universitats i Recerca del Departament d’Innovació, Universitats i Empresa de la Generalitat de Catalunya and to the the European Social Fund (ESF) for the FI grant of Marc Escribà Gelonch Glycerol Biodiesel Vegetable oils Animal fats Raw materials Allyl esters Use of crude glycerol from biodiesel producers and fatty materials to prepare allyl esters