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[References: 25 tit.]

The testing results of the cracking zeolite catalysts using the mathematical model of catalytic cracking are given in this research. The mathematical model is based on the formalized scheme of hydrocarbon conversions according to the results of laboratory research using gas chromatography-mass spectrometry and thermodynamic analysis of the catalytic cracking reactions using quantum chemistry methods. The effect of the catalyst composition on the distribution of the catalytic cracking products, the content of propane-propylene and butane-butylene fraction in wet gas, group composition and octane number of gasoline, the content of coke on the catalyst are determined using the mathematical model of catalytic cracking.