FIELD: catalysts for petrochemical syntheses. SUBSTANCE: in a method of modifying form-selectivity of aluminosilicate zeolite catalyst with silica/alumina molar ratio below 500, catalyst is subjected to at least two ex situ consecutive treatments (selections) in which each ex situ consecutive selection involves stage wherein catalyst is kept in contact with selectivity-enhancing agent, usually organosilicon compound, in a carrier and subsequent catalyst- calcination stage. Catalyst, in particular, is applicable in toluene disproportionation process. EFFECT: increased p-dialkylbezene selectivity of catalyst, ordinarily higher than 80%. 22 cl, 9 tbl, 28 ex
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