Epoxidação do óleo de mamona e derivados empregando o sistema catalítico VO (acac) 2/TBHP
MRS Nunes, M Martinelli, MM Pedroso - Química nova, 2008 - SciELO Brasil
MRS Nunes, M Martinelli, MM Pedroso
Química nova, 2008•SciELO BrasilThe alternative system VO (acac) 2/TBHP was investigated for the epoxidation reaction of
castor oil and its derivatives. Results of 88% of conversion, 73% of epoxidation and 82% of
selectivity were obtained for the system containing 20% excess of TBHP and 1% of VO
(acac) 2 catalyst, during 3 h under toluene reflux. The product was characterized by GC/MS
as methyl-cis-9, 10-epoxi, 12-hydroxystearate and quantitative ¹H NMR was used to
calculate the data above. Preliminary results indicate that the heterogeneous system VO …
castor oil and its derivatives. Results of 88% of conversion, 73% of epoxidation and 82% of
selectivity were obtained for the system containing 20% excess of TBHP and 1% of VO
(acac) 2 catalyst, during 3 h under toluene reflux. The product was characterized by GC/MS
as methyl-cis-9, 10-epoxi, 12-hydroxystearate and quantitative ¹H NMR was used to
calculate the data above. Preliminary results indicate that the heterogeneous system VO …
Resumo
The alternative system VO (acac) 2/TBHP was investigated for the epoxidation reaction of castor oil and its derivatives. Results of 88% of conversion, 73% of epoxidation and 82% of selectivity were obtained for the system containing 20% excess of TBHP and 1% of VO (acac) 2 catalyst, during 3 h under toluene reflux. The product was characterized by GC/MS as methyl-cis-9, 10-epoxi, 12-hydroxystearate and quantitative ¹H NMR was used to calculate the data above. Preliminary results indicate that the heterogeneous system VO (acac) 2 grafted on K10 clay can also promote epoxidation of castor oil.
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