Siberian Federal University

The effect of the concentration and method of introducing boron into γ-Al2O3 on the structural, acidic properties, catalytic activity and selectivity of B-containing aluminum oxide in the process of converting propane into olefin hydrocarbons was studied. The acidic characteristics of the catalysts were studied using the ammonia thermal desorption method. The morphology and sizes of B-containing aluminum oxide crystals were determined using the scanning electron microscopy method. Data on the textural characteristics of B-containing catalysts were obtained using the low-temperature nitrogen adsorption method. The nature and concentration of coke deposits formed on the surface of the studied catalysts during the reaction of converting propane into olefin hydrocarbons were determined using the differential thermal analysis method. It was found that when boron was introduced into aluminum oxide, catalysts were obtained that exhibit higher selectivity in the process of converting propane into olefin hydrocarbons. It has been established that the greatest amount of olefin hydrocarbons in the process of propane conversion at a temperature of 650 °C is formed on a catalyst containing 4.0 % B introduced by the ion exchange method. The selectivity of olefin formation on it at a reaction temperature of 650°C is 64.4 %