The acid and catalytic properties of ZSM-5 zeolites modified with tungsten heteropolycompounds were studied in the process of production of high-octane gasoline from straight-run gasoline. It was shown that introducing cobalt tungsten-bismuthate, cobalt tungsten-phosphate, and iron tungsten-phosphate heteropolycompounds in zeolite in amount of 1–3 wt % makes it possible to increase the yield of high-octane gasoline by 5–10% and that of alkyl aromatic hydrocarbons by 5–7% from straight-run gasoline compared to initial H-ZKE-G zeolite. The interrelation between acid and catalytic properties of zeolite catalysts modified with cobalt tungsten-bismuthate, cobalt tungsten-phosphate, and iron tungsten-phosphate heteropolycompounds was established for the process of producing high-octane gasoline from straight-run gasoline.

The acid and catalytic properties of the modified MFI zeolite catalysts during the conversion of the propane–butane fraction of the associated petroleum gases into the aromatic hydrocarbons were studied. It was established that the high-silica zeolites synthesized with the new structure-forming additive of the alcohol fraction (ZKE-AF) belong to the high-silica MFI zeolites. The resulting zeolites were modified by 1–5 wt. % additives consisting of zinc oxide and sulfide. The influence of the modifying additive concentration containing zinc oxides and sulfides in an amount of 1–5% on the acid and catalytic properties of the catalysts in the conversion process of lower C₃–C₄ alkanes into liquid hydrocarbons was studied. The research of the acid properties of the modified zeolite catalysts by thermal desorption of ammonia showed that the total concentrations of the acidic centers of H-ZKE-AF modified by 3% and 5% ZnO increased. It was found that the highest yield of liquid hydrocarbons was on the zeolite catalysts modified by 3% and 5% ZnS, and is 60.6% and 60.5%, respectively, which is 9% more than in the initial H-ZKE-AF. The activity of the zeolite catalysts modified by zinc oxide and zinc sulfide was in correlation with their acid properties.

The acid and catalytic properties of zeolite catalysts modified with metal nanopowders (Cu, Zn, and W) were studied in the conversion of gas-condensate straight-run gasolines to high-liquid high-octane gasolines that match European standards. It was shown that the highest activity in formation of high-octane gasolines from straight-run gasolines is exhibited by H-ZKE-G zeolite catalyst modified with 1–3 wt% W nanopowders, which finding is in good agreement with the results of examination of the acid properties.

Effect of activation by UV radiation with different wavelengths on the acid and catalytic properties of the N-TsKE-G zeolite catalyst in conversion of straight-run gasolines from the gas condensate of the Myl’dzhinskoe deposit to high-octane components of motor fuels was studied.