The influence of the content of the zeolite component in the composition of cobalt catalysts for the synthesis of hydrocarbons on their physico-chemical properties is investigated. The catalysts were obtained by impregnation of a zeolite-containing carrier with subsequent heat treatment. The obtained samples with a concentration of ZVM zeolite of 30-70% were characterized by the methods of BET, TPR, TPD H2. The results of the analysis show that an increase in the concentration of the zeolite component of the catalyst contributes to an increase in the specific surface area, dispersion and a decrease in the recovery temperature of the deposited cobalt.

Keywords: applied catalyst, cobalt, zeolite, dispersion, specific surface area, active component, synthetic fuel, degree of reduction

The article presents the results of a study of the physicochemical and catalytic properties of cobalt catalysts on a mixed zeolite-containing carrier. Samples of catalysts containing 10% cobalt and from 30 to 70% high-silica zeolite ZVM were prepared by impregnation with subsequent heat treatment. Methods of IR spectroscopy, scanning electron microscopy (SEM) in combination with energy dispersion analysis (EMF) were used to study the physicochemical properties of catalysts. The catalytic properties were studied in a reactor with a fixed layer at a temperature of 240 °C, a pressure of 20 MPa, a volumetric gas velocity (OSG) of 1000 h-1, H2 / CO = 2. As a result of IR spectroscopy, the presence of Si-O, Al–OH, Co–O, etc. functional groups was detected, SEM–EMF images confirmed the uniform distribution of cobalt on the surface of catalysts. The dependences of the catalytic characteristics depending on the content of zeolite were established, the maximum activity was recorded for a sample containing 70% of ZVM zeolite.

Keywords: catalysts, Fischer-Tropsch synthesis, cobalt, zeolite, carrier, IR spectroscopy

The effect of a zeolite support on the physicochemical properties of cobalt catalysts prepared by the precipitation method and calcined at 400°C was studied. The values of the specific surface of the catalysts, the degree of cobalt reduction, and the dispersion of the metal were determined, and the presence of functional groups on the surface of the catalysts was determined by BET, TPV, TPD-H2, and IR spectroscopy.

Keywords: catalyst, cobalt oxide, hydrocarbons, dispersion, active surface

The effect of a zeolite support on the physicochemical properties of cobalt catalysts was studied on a series of samples with zeolites ZSM-5, HY, and NaX. The catalysts were obtained by precipitation followed by mixing the precipitate with a zeolite support. Their properties were characterized by BET, TPR, TPD-H2, IR spectroscopy. The results of the analysis show that the type of zeolite support affects the specific surface area, reduction of deposited cobalt, and the structural properties of the active component of catalytic systems.

Keywords: precipitated catalyst, cobalt, zeolite, dispersion, specific surface area, active component, synthetic fuel, degree of reduction

The physicochemical properties of cobalt catalysts on a NaX zeolite support have been studied. The parameters of the specific surface area, reduction of deposited cobalt, and structural properties of the active component of catalytic systems have been determined. To establish these properties, the methods of BET, TPR, TPD-H2, IR spectroscopy were used. It is shown that the preparation procedure has a significant effect on the physicochemical characteristics of the samples.

Keywords: catalysts, cobalt, zeolite, dispersion, specific surface area of the active component

The article investigates the role of the preparation method and heat treatment in the formation of the physicochemical properties of cobalt catalysts on ZSM-5 support. Determination of the main characteristics of the samples showed that the Co/ZSM-5 I catalyst obtained by the impregnation method has the optimal cobalt dispersion and crystallite size.

Keywords: synthesis of hydrocarbons, cobalt, zeolite, preparation of catalysts, heat treatment

The results of studies of the structural and chemical properties of cobalt catalysts on zeolite HY support are presented. The samples were characterized by BET, TPR, TPD-H2, and IR-spectroscopy. It was found that these properties largely depend on the preparation method.

Keywords: Fischer-Tropsch synthesis, active surface, cobalt, zeolite, preparation method

The article considers the effect of Al2O3 loading on the physical and chemical properties of cobalt catalysts. The loading of the alumina additive has a significant effect on both the phase and texture properties, as well as on the cobalt reduction process in the composition of the studied samples. It was found that with increasing loading of the additive, the specific surface area of the catalysts decreases, and the cobalt recovery process slows down.

Keywords: Fischer-Tropsch synthesis, catalyst, cobalt, alumina, promoter, temperature programmed reduction

The article presents the results of research on the morphology of cobalt catalysts for Fischer-Tropsch synthesis on a silicate support with promoting additives of aluminum, manganese and chromium using scanning and transmission electron microscopy. The effect of additives on the surface structure and dimensional characteristics of metallic cobalt was determined.

Keywords: morphology, electron microscopy, catalysts, Fischer-Tropsch synthesis, promoters

The article presents the results of research of the physical and chemical properties of cobalt catalysts on a zeolite support. Methods of BET, thermoprogrammed reduction, thermoprogrammed hydrogen desorption and IR-spectroscopy were used for study. The influence of the support nature on the structural (specific surface area, dispersion of metallic cobalt, size of metal crystallites) and chemical (degree of cobalt reduction) properties of catalysts was established.

Keywords: Fischer-Tropsch synthesis, catalysts, zeolite, hydrocarbon synthesis, structural properties

The article presents the results of studies of cobalt catalysts for the synthesis of hydrocarbons on a silicate support with promoting additives of aluminum, manganese and chromium. The influence of additives on the structural (specific surface area, dispersion of metallic cobalt, size of metal crystallites) and chemical (cobalt reduction degree) properties of catalysts was established.

Keywords: cobalt, catalysts, hydrocarbon synthesis, structural properties, promoters