FIELD: petroleum chemistry.
SUBSTANCE: present invention relates to methods of producing catalysts on a support and particularly relates to production of supported aromatization catalysts containing a transition metal and a bound zeolite base using a catalyst impregnation step where high chlorine loads are present. Described is a catalyst on a hydrocarbon raw material reforming carrier contains: a bound zeolite base; from 0.3 wt % to 3 wt % platinum; from 1.8 wt % to 4 wt % of chlorine; and from 0.4 wt % to 1.5 wt % fluorine, based on the total weight of the supported catalyst; where the supported catalyst is characterized by a peak reduction temperature on a curve of temperature-programmed reduction (TPV) in range of 580 °F to 800 °F, where the bound zeolite base contains K/L zeolite and binder based on silica. Method of reforming hydrocarbon feedstock involves bringing hydrocarbon material into contact with a flavoring catalyst on a support under reforming conditions in a reactor system to obtain an aromatic product, wherein the supported aromatisation catalyst is a supported catalyst described above. Method of producing the above catalyst on a hydrocarbon feedstock for reforming involves: (a) impregnating the bound zeolite base with a precursor of a transition metal, a chlorine precursor and a fluorine precursor to form an impregnated zeolite base; and (b) drying and then calcining the impregnated zeolite base to obtain a catalyst on a support; wherein supported catalyst contains, based on total weight of catalyst on support: from 0.3 wt % to 3 wt % platinum; from 1.8 wt % to 4 wt % of chlorine; and from 0.4 wt % to 1.5 wt% fluorine; and where supported catalyst is characterized by peak recovery temperature on curve of temperature-programmed recovery in range of 580 °F to 800 °F; and where bound zeolite base contains K/L zeolite and binder based on silica. Also disclosed is a catalyst on a hydrocarbon raw material reforming carrier obtained by said method. Method for reforming hydrocarbon feedstock involves contacting hydrocarbon feedstock with supported catalyst as described in claim 42 in reforming conditions in a reactor system to produce an aromatic product. Disclosed is an activated catalyst for reforming hydrocarbon material obtained by said method, which additionally includes a step of reducing after drying and calcining impregnated zeolite base, wherein the reduction step includes contacting the supported catalyst with a stream of reducing gas containing molecular hydrogen to obtain an activated catalyst.
EFFECT: technical result is obtaining an improved aromatization catalyst, which provides high catalytic activity and selectivity, low rate of contamination and stability during long production cycles.
49 cl, 7 ex, 5 tbl, 10 dwg
