OBTAINING FLAVOURING CATALYST IN PRESENCE OF ALKALI METAL AT WASHING STEP Russian patent published in 2020 - IPC B01J37/06 B01J29/62 B01J27/13 B01J23/04 C10G35/06 

FIELD: chemistry.

SUBSTANCE: invention relates to methods of producing catalysts on a support, comprising a transition metal and a bound zeolite base, a reforming catalyst and reforming methods involving contacting the hydrocarbon feedstock with the catalyst in reforming conditions in a reactor apparatus in order to obtain an aromatic product. Method of producing supported catalyst includes: (a) preparing a bound zeolite base containing bound zeolite of type L; (b) washing the bound zeolite base with an aqueous solution containing rubidium, caesium or a combination thereof to obtain a zeolite support enriched with an alkali metal; or washing the bound zeolite base with an aqueous solution containing potassium in order to obtain a potassium-enriched zeolite support, wherein concentration of potassium in aqueous solution ranges from about 0.1 M to about 0.45 M; and (c) impregnating a zeolite support rich in an alkali metal with Group 8–10 transition metal and halogen to obtain a catalyst on a support.

EFFECT: obtaining an unexpected combination of high selectivity of the catalyst on the product (for example, benzene or toluene), but with a lower specific surface area of the catalyst and a smaller volume of micropores of the catalyst.

75 cl, 3 tbl, 5 ex, 4 dwg