TY - JOUR

T1 - The catalytical oxidation of propan-butane mixture on the hydrogen and hydrogen content compounds

AU - Massalimova, B. K.

AU - Shoraeva, K. A.

AU - Nauruzkulova, S. M.

AU - Jetpisbayeva, G. D.

AU - Altynbekova, D. T.

AU - Amanzhol, Zh E.

AU - Sadykov, V. A.

PY - 2019

Y1 - 2019

N2 - Oxidative conversion of the propane-butane mixture by air into oxygen-containing compositions was studied. It were determined the optimum reaction temperature, contact time, change in the space velocity in the process of partial oxidation of C3-C4 hydrocarbons. The physicochemical studies of the initial and treated catalysts were carried out under experimental conditions. When changing the content of the active component from 1 to 10% on the carrier, it was found that the most optimal is 1% MoCrGa/TC catalyst, on which up to 89.92% of hydrogen is obtained. As a result of varying the composition of the catalyst, the content of the active phase, the ratio of reactants, up to 70% of ethylene was obtained. In addition, in some cases, CH3OH was obtained, the maximum yield of which is 22%, and also up to 35% of methyl ethyl ketone. As a result of EM and XRD studies, it was shown that under reaction conditions, a new Cr2O5 phase is formed on the catalyst surface (corresponding to the Cr2+ and Cr3+ transition to Cr5+), as well as joint Mo phases with Cr in different valence states, the physical meaning and role of which are to be determined.

AB - Oxidative conversion of the propane-butane mixture by air into oxygen-containing compositions was studied. It were determined the optimum reaction temperature, contact time, change in the space velocity in the process of partial oxidation of C3-C4 hydrocarbons. The physicochemical studies of the initial and treated catalysts were carried out under experimental conditions. When changing the content of the active component from 1 to 10% on the carrier, it was found that the most optimal is 1% MoCrGa/TC catalyst, on which up to 89.92% of hydrogen is obtained. As a result of varying the composition of the catalyst, the content of the active phase, the ratio of reactants, up to 70% of ethylene was obtained. In addition, in some cases, CH3OH was obtained, the maximum yield of which is 22%, and also up to 35% of methyl ethyl ketone. As a result of EM and XRD studies, it was shown that under reaction conditions, a new Cr2O5 phase is formed on the catalyst surface (corresponding to the Cr2+ and Cr3+ transition to Cr5+), as well as joint Mo phases with Cr in different valence states, the physical meaning and role of which are to be determined.

KW - catalysts

KW - propan-butane mixture

KW - natural clay

KW - CONVERSION

U2 - 10.32014/2019.2518-1491.13

DO - 10.32014/2019.2518-1491.13

M3 - Article

SP - 21

EP - 25

JO - Известия Национальной академии наук Республики Казахстан. Серия химии и технологии

JF - Известия Национальной академии наук Республики Казахстан. Серия химии и технологии

SN - 2224-5286

IS - 2

ER -