CATALYST, METHOD OF ITS PRODUCTION (VERSIONS) AND METHOD OF LIQUID-PHASE ALKYLATION OF ISOBUTANE BY

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FIELD : process engineering. SUBSTANCE : invention relates to petrochemistry, particularly, to production of zeolite-based catalyst for alkylation of isobutane by olefins and may be used in oil processing. Invention covers catalyst of alkylation of isobutane by zeolite-based olefins that contains aluminium oxide and silicon dioxide at silicon dioxide-to-aluminium oxide molar ratio equal to 2.8-7.0, sodium oxide, rare-earth element, oxides of active metals, which contains oxides of platinum and/or palladium and/or rhenium and/or ruthenium at the following ratio of components, in wt % : sodium oxide - 0.26-0.8, calcium oxide - 0.8-4.2, rare earth element oxide - 12.0-20.0, oxides of platinum and/or or palladium and/or molybdenum and/or nickel and/or cobalt - 0.02-2.0, zeolite with SiO2/Al2O3 equal to 2.8-7.0, making the rest. It covers also two versions of the method of catalyst production comprising zeolite treatment by water solutions of salts of calcium, rare earth element and ammonium at increased temperature and pressure of saturated vapors for time period required for conversion of zeolite into rare-earth calcium zeolite, its washing, drying and calcinating. In compliance with this method, first, rare-earth calcium zeolite is impregnated with unipolar water unless air escapes from zeolite pores and, then, processing is performed by impregnation with water solutions of salts of oxides of active metals, which contains oxides of platinum and/or palladium and/or molybdenum and/or nickel and/ or cobalt taken in amount that ensures said content of metal oxide in finished catalyst. It comprises also drying, calcinating, or applying on rare-earth metal calcium zeolite of water solutions of salts of oxides of active metals, which contains oxides of platinum and/or palladium and/or molybdenum and/or nickel and/or cobalt. The process includes two stages : first, cold impregnation at not over 30°C, and, second, at, at least, 70°C, and finally drying, tabletting and calcinating. EFFECT : increase in catalyst activity approximating to 100 wt %, isotope selectivity approximating to 73.5 wt %, yield of target alkyl benzene by 10-15 wt %. 16 cl, 10 ex, 2 tbl