Nowadays recycling and reprocessing waste materials is becoming a primary issue. A method for producing BioDiesel (BD) from triglycerides using chlorotrimethylsilane (TMSCl) as “mediator” has been reported [1,2]. Being an acidic process, transesterification and esterification are performed at the same time, avoiding the production of soaps and emulsions. These conditions allow to use substrates coming from the recovery of food waste materials such as fried oil or animal fats from slaughter, that have a very high content in free fatty acids. Moreover, at the end of the reaction the mixture divides in two phases that can be easily separated. The upper one contains fatty acid methyl esters, ready for the distillation. The lower one is a mixture of glycerol and α-monochlorohydrin. Now, with the aim to optimize the selective conversion into α-monochlorohydrin or α,γ-dichlorohydrin, the reaction of glycerol with TMSCl has been studied [3]. In particular, α,γ-dichlorohydrin, precursor of epichlorohydrin, is obtained in an easier way with respect to the known processes [4] based on the use of gaseous HCl. Since the two transformations use the same reagent (TMSCl), they could be integrate for the complete conversion of triglycerides into valuable commodities. References: [1] A. Brandi, A. Salvini, G. Cipriani, D. Giomi and G. Bartolozzi, Patent WO 2011/023712 A1. [2] A. Salvini, D. Giomi, G. Cipriani, G. Bartolozzi, R. Alfini, A. Brandi, RSC Adv. 2 (2012) 4864-4868. [3] D. Giomi, M. Malavolti, O. Piccolo, A. Salvini, A. Brandi, RSC Adv. 4 (2014) 46319-46326. [4] R. Tesser, E. Santacesaria, M. Di Serio, G. Di Nuzzi, V. Fiandra, Ind. Eng. Chem. Res. 46 (2007) 6456−6465.
TMSCl: a useful reagent for waste materials valorization / Marino Malavolti; Alberto Brandi; Donatella Giomi; Antonella Salvini; Oreste Piccolo. - ELETTRONICO. - (2014), pp. OR-48-OR-48. (Intervento presentato al convegno XIV Sigma-Aldrich Young Chemists Symposium S.A.Y.C.S. tenutosi a Riccione nel 27-29/10/2014).
TMSCl: a useful reagent for waste materials valorization
MALAVOLTI, MARINO;BRANDI, ALBERTO;GIOMI, DONATELLA;SALVINI, ANTONELLA;
2014
Abstract
Nowadays recycling and reprocessing waste materials is becoming a primary issue. A method for producing BioDiesel (BD) from triglycerides using chlorotrimethylsilane (TMSCl) as “mediator” has been reported [1,2]. Being an acidic process, transesterification and esterification are performed at the same time, avoiding the production of soaps and emulsions. These conditions allow to use substrates coming from the recovery of food waste materials such as fried oil or animal fats from slaughter, that have a very high content in free fatty acids. Moreover, at the end of the reaction the mixture divides in two phases that can be easily separated. The upper one contains fatty acid methyl esters, ready for the distillation. The lower one is a mixture of glycerol and α-monochlorohydrin. Now, with the aim to optimize the selective conversion into α-monochlorohydrin or α,γ-dichlorohydrin, the reaction of glycerol with TMSCl has been studied [3]. In particular, α,γ-dichlorohydrin, precursor of epichlorohydrin, is obtained in an easier way with respect to the known processes [4] based on the use of gaseous HCl. Since the two transformations use the same reagent (TMSCl), they could be integrate for the complete conversion of triglycerides into valuable commodities. References: [1] A. Brandi, A. Salvini, G. Cipriani, D. Giomi and G. Bartolozzi, Patent WO 2011/023712 A1. [2] A. Salvini, D. Giomi, G. Cipriani, G. Bartolozzi, R. Alfini, A. Brandi, RSC Adv. 2 (2012) 4864-4868. [3] D. Giomi, M. Malavolti, O. Piccolo, A. Salvini, A. Brandi, RSC Adv. 4 (2014) 46319-46326. [4] R. Tesser, E. Santacesaria, M. Di Serio, G. Di Nuzzi, V. Fiandra, Ind. Eng. Chem. Res. 46 (2007) 6456−6465.
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