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1
Content available remote Application of Ti-MCM-48 catalyst in 1-butene-3-ol epoxidation
Wróblewska A., Wajzberg J.
Czasopismo Techniczne. Chemia
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2008
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R. 105, z. 2-Ch
265-273
EN
The influence of technological parameters on 1-butene-3-ol (1B3O) epoxidation over Ti-MCM-48 catalyst has been presented. A 30 wt% H[2]O[2] was used as an oxidizing agent in the presence of solvent (methanol). The epoxidation was carried out at autogenic pressure. The major product of epoxidation was 1,2-epoxybutane-3-ol (1,2EB3), an epoxide compound with a lot of applications.
PL
W artykule przedstawiono wpływ parametrów technologicznych na epoksydację 1-buten-3-olu (1B3O) na katalizatorze Ti-MCM-48. Jako utleniacz zastosowano 30% nadtlenek wodoru w obecności metanolu jako rozpuszczalnika. Epoksydację prowadzono pod ciśnieniem autogenicznym. Głównym produktem epoksydacji był 1,2-epoksybutan-3-ol (1,2EB3), związek epoksydowy o licznych zastosowaniach.
2
Content available The pressure method of 1-butene-3-ol epoxidation over Ti-beta catalyst
Wróblewska A., Wajzberg J., Milchert E., Grzmil B., Ziebro J.
Polish Journal of Chemical Technology
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2007
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Vol. 9, nr 2
53-56
EN
The investigations of 1-buten-3-ol (1B3O) epoxidation by 30% hydrogen peroxide over Ti-Beta catalyst were performed. The experiments were carried out under the autogenic pressure and at the presence of methanol as a solvent. The influence of the following technological parameters on the course of epoxidation: temperature (20 - 120°C), the molar ratio of 1B3O/H2O2 (0.5:1 - 5:1), methanol concentration (5 - 90 wt%.), Ti-Beta concentration (0.1 - 5.0 wt%) and the reaction time (0.5 - 5.0 h) was investigated. The main functions describing the process were: the selectivity of transformation to 1,2-epoxy-3-butanol in relation to 1B3O consumed, conversions of substrates as well as the selectivity of transformation to organic compounds in relation hydrogen peroxide consumed.
3
Content available The new method of 1,2-epoxy-3-butanol production over titanium silicalite catalysts
Wajzberg J., Wróblewska A.
Polish Journal of Chemical Technology
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2007
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Vol. 9, nr 2
49-52
EN
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.
4
Content available Epoxidation of 1-buten-3-ol under atmospheric pressure over the Ti-Beta catalyst
Wróblewska A., Wajzberg J.
Polish Journal of Chemical Technology
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2007
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Vol. 9, nr 2
110-113
EN
The results of 1-buten-3-ol (1B3O) epoxidation with 30% hydrogen peroxide over the Ti-Beta catalyst were presented. The studies were performed under the atmospheric pressure and at the presence of methanol as a solvent. There was examined the influence of the following parameters: the temperature (0 - 60°C), the molar ratio of 1B3O/H2O2 (1:1 - 5:1), methanol concentration (5 - 90 wt%), the Ti-Beta catalyst concentration (0.1 - 5.0 wt%) and the reaction time (0.5 - 5.0 h). The optimal parameters were determined by using the following functions: the selectivity of the transformation to 1,2-epoxy-3-butanol (1,2E3B) in relation to 1B3O consumed, the selectivity of the transformation to organic compounds in relation to hydrogen peroxide consumed, the conversions of 1B3O and hydrogen peroxide. The main product of epoxidation was 1,2-epoxy-3-butanol, epoxide having several applications.
5
Content available remote Epoxidation of methallyl chloride over Ti-Beta catalyst
Wróblewska A., Milchert E., Wajzberg J.
Polish Journal of Chemical Technology
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2006
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Vol. 8, nr 2
76-79
EN
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.
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