Epoxidation of castor oil and its derivatives using VO(acac)2/TBHP as the catalytic system

Quimica nova

Pedroso, Marcelo Monteiro¹  Martinelli, Marcia¹  Nunes, Marta Regina dos Santos² 

[1] Universidade Federal do Rio Grande do Sul, Porto Alegre, Brasil;Universidade de Caxias do Sul, Caxias do Sul, Brasil

关键词: epoxidation;    castor oil;    heterogeneoussystem.;   

DOI  :  10.1590/S0100-40422008000400021

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

The alternative system VO(acac)2/TBHPwas investigated for the epoxidation reaction of castor oil and its derivatives.Results of 88% of conversion, 73% of epoxidation and 82% of selectivity wereobtained for the system containing 20% excess of TBHP and 1% of VO(acac)2catalyst, during 3 h under toluene reflux. The product was characterized byGC/MS as methyl-cis-9, 10-epoxi, 12-hydroxystearate and quantitative1H NMR was used to calculate the data above. Preliminary resultsindicate that the heterogeneous system VO(acac)2 grafted on K10 claycan also promote epoxidation of castor oil.

【 授权许可】

CC BY