Studies on the air oxidative transformation of the propane-butane mixture to oxygen-containing compositions have been carried out. The optimum temperatures of the process, as well as the ratios of the initial components of the reaction mixture and the content of the active phase on the carrier and volumetric rates have been determined. Physical and chemical studies of the initial and treated catalysts under experimental conditions were carried out. When changing the content of the active component on the carrier from 1 to 10%, it was found that the most optimal is the catalyst 5% MoCrGa/TC, on which up to 22% acetone was obtained. As a result of varying the composition of the catalyst, the content of the active phase, the ratio of reactants, up to 35-40% of acetone was obtained. In addition, in some cases, CH3OH was obtained, with the maximum yield 22%, as well as 35% of methyl ethyl ketone. As a result of EM and XRD studies, it was shown that under reaction conditions a new Cr2O5 phase (corresponding to the Cr2+ and Cr3+ transition to Cr5+) is formed on the catalyst surface, as well as joint phases of Mo and Cr in various valence states, the physical meaning and role of which are to be determined.
|Журнал||Известия Национальной академии наук Республики Казахстан. Серия химии и технологии|
|Состояние||Опубликовано - 2019|