CATALYST FOR REFORMING GASOLINE FRACTIONS AND METHOD FOR PRODUCTION THEREOF Russian patent published in 2024 - IPC B01J23/656 B01J23/08 B01J21/06 B01J21/04 B01J27/10 B01J37/02 B01J37/04 B01J37/06 B01J37/08 C10G35/85 

FIELD: chemistry.

SUBSTANCE: invention relates to production of catalyst for reforming gasoline fractions and can be used in oil refining industry. Gasoline fraction reforming catalyst contains the following components, wt.%: platinum 0.2–0.4, rhenium 0.2–0.4, a binary compound of indium and zirconium, having molar ratio In:Zr=1.0:0.6–3.0, 0.07–0.35, chlorine 0.8–1.3, alumina carrier – the rest. To obtain a catalyst, an alumina support is prepared from a moulding paste obtained by successive mixing while stirring pseudoboehmite, a binary compound of indium and zirconium, having a molar ratio of In:Zr=1.0:(0.6–3.0), an aqueous solution of nitric acid and water, mixing with grinding for 8–10 minutes, adding an aqueous solution of methylcellulose and stirring for 30–35 minutes, moulding the paste into granules, drying and calcining in air flow. Obtained alumina support is pre-washed with weak acetic acid solution for 20–30 minutes, then washing with water for 20–30 minutes and applying platinum and rhenium by impregnation from an aqueous solution containing hexachloroplatinic acid, ammonium perrhenate, hydrochloric and acetic acids in amount of 1–2 moles per mole of acid sites of aluminum oxide. After that catalyst is dried and calcined in air flow. Granules are dried at room temperature for 20–24 hours, dried at temperature of 60–110 °C for 6–9 hours and calcined at temperature of 500–550 °C for 5–7 hours. Catalyst is dried at temperature of 80–110 °C for 2-3 hours and calcined at temperature of 500–520 °C for 5–7 hours.

EFFECT: high stability of the catalyst due to optimizing the combination of metal, acidic and textural characteristics of the catalyst, which provide an optimum ratio of toluene output to isobutane output and minimum content of olefins in the reformate without loss of activity.

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