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3 Polish Journal of Chemical Technology

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The new method of 1,2-epoxy-3-butanol production over titanium silicalite catalysts

Wajzberg J., Wróblewska A.

Polish Journal of Chemical Technology

2007

Vol. 9, nr 2

49-52

The results of 1-butene-3-ol (1B3O) epoxidation over the titanium silicalite catalysts: TS-1, Ti-Beta, Ti-MCM-41 has been presented. The optimal parameters obtained for the individual catalyst were compared. The main functions describing the process were: the selectivity of transformation to 1,2-epoxy-3-butanol (1,2E3B) in relation to 1B3O consumed, the conversions of 1B3O and hydrogen peroxide and the selectivity of the transformation to organic compounds in relation to the H2O2 consumed. The main product of the epoxidation process was 1,2-epoksy-3-butanol, the chemical compounds having a lot of applications.

Epoxidation of 2-buten-1-ol over Ti-MCM-41 and Ti-MCM-48 titanium silicalite catalysts

Wróblewska A., Ławro E., Milchert E.

Polish Journal of Chemical Technology

2007

Vol. 9, nr 3

1-4

The results of the epoxidation of 2-buten-1-ol with 30 wt% hydrogen peroxide have been presented. As a solvent methanol was used. The process was carried out over the titanium silicalite catalysts: Ti-MCM-41 and Ti-MCM-48. The influence of temperature (20 - 120°C). the molar ratio of CRA/H2O2 (5:1 - 5:1), methanol concentration (5 - 90 wt%), catalyst concentration (0.1 - 5.0 wt%) and the reaction time (30 -300 min) was investigated. The obtained results were used for the determination of optimum conditions of running the epoxidation process of 2-buten-1-ol.

Ti-MCM-41 catalyst in environmentally friendly technologies

Wróblewska A.

Polish Journal of Chemical Technology

2004

Vol. 6, nr 3

45-47

Four synthesis routes of the preparation of the hexagonal member of the M41S family, Ti-MCM-41, with a one-dimensional pore system were investigated. The syntheses were based on the methods applying mainly: tetraethoxysilane, tetrabutyltitanate, ethanol, water, ammonia, hydrogen peroxide and n-hexadecyltrimethylammonium bromide as template. The best method, which allowed achieving high cristallinity of the product and required smaller amount of materials and energy, was selected. The best sample of Ti-MCM-41 was tested in the liquid phase epoxidation of allyl and methallyl alcohol in methanol as a solvent. This is a new environmentally friendly method of the synthesis of epoxides.