CATALYST OF DEHYDRATION OF PARAFFIN HYDROCARBONS, METHOD OF ITS PRODUCTION AND METHOD FOR DEHYDRATED HYDROCARBONS USING THIS CATALYST

摘要

FIELD: chemistry.;SUBSTANCE: catalyst containing chromium, potassium and/or sodium, cerium and/or zirconium oxides applied to a composite support including aluminium oxide and aluminium is described. The carrier contains 2-5% of aluminium, and the carrier is obtained by hydrothermal treatment of powdered metal aluminium with a particle size of 10÷500 nm in one step in a weight ratio of Al:H₂O=1:17 at relatively low temperatures (20÷100°C) and atmospheric pressure for 15 minutes (without preliminary preparation of materials and without the use of autoclave equipment) followed by heat treatment at a temperature of 95-700°C. The process of preparing the catalyst comprises impregnating the support with an aqueous solution containing soluble compounds of chromium, potassium and/or sodium, cerium and/or zirconium, followed by drying at 95-120°C and calcination at 400-800°C for 4 hours. The process of dehydrogenation of paraffinic hydrocarbons in a stationary bed is described using the above-mentioned aluminium chromium catalyst.;EFFECT: production of granular alumochrome catalyst with high mechanical stability and catalytic activity in dehydrogenation of paraffinic hydrocarbons into the respective unsaturated hydrocarbons.;3 cl, 2 tbl, 7 ex