Surfactant effect on the catalytic synthesis of 4,4-dimethyl-1,3-dioxane
Autor: | V. Z. Kuz’min, I. I. Safarova, A. G. Liakumovich, D. Kh. Safin |
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Rok vydání: | 2009 |
Předmět: | |
Zdroj: | Catalysis in Industry. 1:190-195 |
ISSN: | 2070-0555 2070-0504 |
Popis: | The main problem of 4,4-dimethyl-1,3-dioxane synthesis is the phase separation arising from the mutual insolubility of the aqueous phase, which contains formaldehyde and an acid catalyst, and the hydrocarbon phase, which contains isobutylene. Isobutylene condensation with formaldehyde has been investigated for the first time in the presence of surfactants with the aim of increasing the efficiency of the process. Surfactant admixtures provide high selectivity and a high reactant conversion, thus allowing the starting material consumption rate to be reduced. The surface and interfacial activities of the admixtures are evaluated. It is assumed that the surfactants cause the formation of microemulsions in the reaction medium and bring about micellar catalysis. |
Databáze: | OpenAIRE |
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