The studies were focused on the influence of key parameters (temperature, pressure, dilution of the reaction medium with an inert gas) of catalytic processes (cracking of vacuum gasoil, hydrogen-free upgrading and cracking of gasoline fractions) on the ratio of selectivities to cracking and intermolecular hydrogen transfer. Controlling the ratio of these reactions allows the required products to be obtained on the feedstock processing. Lengthening of the feedstock-catalyst contact time, a decrease in the proportion of the diluting inert gas, and the pressure rise provides an increase in the selectivity to hydrogen transfer. Fixed and circulating catalyst bed setups were used for the experiments. Transformations of the feedstock containing deuterated compounds were studied.

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