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Дата издания
31.12.2024Область исследования
Тип исследования
Аннотация (краткое описание)
The work is devoted to the study of an additional method for the synthesis of monoethylnaphthols by the reac-tion of transethylation of 1-naphthol with ethyl-and diethylnaphthalene, which are by-products of alkylation of 1-naphthol with ethanol and has a small area of application.In the catalytic process carried out in the presence of modified H-mordenite based on 1-naphthol and ethanol, along with the target products (1-ethoxynaphthalene, monoethyl-1-naphthols), up to 10.0% ethyl homologues of naphthalene are obtained. In this regard, the interaction of 1-naphthol with diethylnaphthalenes in the presence of Pd-HSVM and composite mordenite was studied, the effect of pressure on the process, which was identi-fied as an important factor, was studied. In the presence of 1.0 wt % palladium pentasil (x=40), a positive effect of a pres-sure of 0.5 MPa on the results was noted, the selectivity for monoethyl-1-naphthols was 85.0%, and in the presence of H-mordenite containing zirconium, chromium and sulfur, this indicator was 94.3% under the same conditions. An increase in pressure adversely affects the course of the reaction and increases the rate of other transformations in the process, such as isomerization and disproportionation.DOI
https://doi.org/10.51301/ejsu.2024.i6.07Тип публикаций
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Научные издания SU
Engineering Journal of Satbayev University