The results of the conversion of n-butane on supported rhodium catalysts in a stationary mode in the temperature range of 400–600 °C, at atmospheric pressure and a volumetric feed rate of n-butane of 250 h–1 are presented. γ-Al2O3 and SiO2 (silica gel) were used as carriers, the catalysts were prepared according to the moisture capacity of the carriers, the rhodium content was 1 and 3%. Before the start of the experiment, the catalysts were reduced with hydrogen directly in the reactor itself. It was shown that, along with the dehydrogenation of n-butane, a cracking process proceeds in parallel, leading to the formation of both olefins (ethylene, propylene, butene-1, cis- and transbutenes-2), and alkanes (methane, ethane, propane, isobutane). Contact gases contain hydrogen equivalent to the amount of dehydrogenation and degradation products. In trace amounts, non-condensed liquid products such as pentane and aromatics are present in the gas phase. The resulting catalysts were studied by electron microscopy to determine the elemental composition of individual sections on their surface and low-temperature nitrogen adsorption with the determination of the specific surface area (BET).
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