FIELD: oil and gas industry.
SUBSTANCE: invention refers to oil refining, and namely to reactivation methods of catalysts for dehydrogenation of higher paraffins (C10-C13) at reduction of efficiency during the operation. There described is reactivation method of catalyst for dehydrogenation of paraffin hydrocarbons C10-C13, which consists of platinum, metals-promoters of the group indium and/or stannum, and/or cerium, and/or molybdenum, and light metals-modifiers, e.g. magnesium, calcium, potassium, sodium, which are applied to porous heat resistant carrier - active aluminium oxide or aluminium silicate, in which the above reactivation of catalyst is performed in presence of carbon dioxide in two stages, first in nitrogen-air-CO2 with low constant CO2 concentration about 0.003 vol. % or with subsequently increasing concentration - 0.0001 to 0.003 vol. %, and then in steam-air mixture with additive of chlorine hydride and increased CO2 concentration but not exceeding 0.03 vol. %.
EFFECT: increasing selectivity and stability of catalyst operation.
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