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2 Polish Journal of Chemical Technology

2 2006

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Epoxidation of methallyl chloride over Ti-Beta catalyst

Wróblewska A., Milchert E., Wajzberg J.

Polish Journal of Chemical Technology

2006

Vol. 8, nr 2

76-79

The results of the epoxidation of methallyl chloride (MAC) have been presented. The epoxidation was carried out in the autoclave with 30 wt % hydrogen peroxide in the presence of methanol as the solvent. Titanium silicalite Ti-Beta was used as the catalyst. The influence of the following parameters: temperature (20 - 120°C), the molar ratio of MAC/H2O2 (1:1-5:1 mol/mol), solvent concentration (methanol 5-90 wt %), catalyst concentration (0.1 - 5.0 wt %) and the reaction time ( 0.5 - 5 h ) on the yield and the selectivity of transformation to 2-methylepichlorohydrine and methallyl chloride conversion was investigated. The main product of the epoxidation was 2-methylepichlorohydrine, whereas 1-chloro-2-methyl-2,3-propanodiol was formed as a by-product.

Epoxidation of allylic compounds over Ti-MCM-48 catalyst

Wróblewska A.

Polish Journal of Chemical Technology

2006

Vol. 8, nr 2

80-82

The results of the epoxidation of allylic compounds (allyl alcohol, methallyl alcohol and methallyl chloride) to corresponding epoxides (glycidol, 2-methylglycidol and 2-methylepichlorohydrin, respectively) with hydrogen peroxide over Ti-MCM-48 catalyst have been presented. The epoxidation was carried out with 30 wt% hydrogen peroxide in methanol used as a solvent in an autoclave. The optimum technological parameters (temperature, the molar ratio allylic compound/H2O2, methanol concentration, Ti-MCM-48 concentration and reaction time) for the epoxidation of each allylic compound were presented.