Study and analysis of the convertion process of propano-butann mixture in high silicate ceolitic catalysters of different silicate modules and different structures

AbstractThe catalytic aromatization reaction of the propane-butane fraction was carried out on a mesoporous catalyst containing Pt, Zn, Ga and Cd/N-ZSM-5 under the following optimal conditions: Catalytic conversion of propane-butane alkanes at atmospheric pressure went. The reaction was carried out under conditions of temperature 723 to 873 K and volumetric velocity of the raw material from 50 to 150 h. The conversion reaction of a mixture of alkanes containing C2H6 = 2.2; C3H8 = 73.7; N-S4N10 = 24.1%. In high-silicate zeolite catalysts with the structure ZSM-5 ([SiO]_2/[Al]_2 O_3 = 30, 50, 70 and 100) and ZSM-11 ([SiO]_2/[Al]_2 O_3 = = 100), the catalytic contacts the relationship between their structural and acidic characteristics and their activity in the formation of conversion products was studied. Depending on the silicate modulus, it was found that the conversion rate of the alkane mixture S_2-S_4 varies and is 96% at [T = 823K and v = 100 s] ^ (- 1). The distribution curves of the volume of the pores to the equivalent diameters were compared. The largest part of the pores is 13 to 20 diametri in diameter. YuK zeolites also have medium (25–50 Å) and large (50–90 Å) mesocytes. The distribution corresponds to 32–35 bo'yicha along the curves. The sizes of the largest mesocytes for these catalysts vary - from 63 to 80 Å.

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