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Sulfated zirconia catalysts supported on SiO 2 and Al 2 O 3 were prepared and studied. Phase composition of the catalysts, acidic properties in CO adsorption, and textural characteristics were assessed. Activity of the catalysts in isomerization of n-hexane was measured. Alumina was shown to be a promising support for the synthesis of such catalysts. A new step of additional sulfation after platinum deposition was proposed for the synthesis of alumina-supported catalysts. It was found that strong Lewis acid sites with CO absorption bands at 2210 and 2224 cm -1 are formed in the catalysts. The yield of the sum of hexane isomers for the alumina-supported catalysts reached 80 wt.%.

The effect of concentration of the metallic component – platinum (0.1-2 wt.%) – and its electronic state in Pt/WO3/ZrO2 catalysts on characteristics of n-heptane isomerization was studied. It was found that a rise in the platinum concentration to 1.5 wt.% increases the yield of the target products of n-heptane isomerization – high-octane di- and trimethyl-substituted isomers (DTMS). Calcination of the catalyst in flowing air was shown to facilitate the formation of charged platinum, the presence of which enhances the catalyst activity.

An attempt was made to use particle swarm optimization (PSO) method for solving the inverse chemical kinetics problem for the n-hexane isomerization process on a sulfated zirconia catalyst sample. A perspective supported isomerization catalyst based on sulfated zirconia supported on alumina was chosen. Also the optimal coefficients for this problem were chosen. Method of determining the kinetic rate constants for the hexane isomers interconversion was tested. Model of hexanes interconversion based on calculated kinetic rate constants was built.

The performance analysis of the reforming catalyst PR-9 and its replacement prediction on the catalyst PR-81for production reforming unit L-35-11/450K have been carried out using a mathematical model. The effect of feedstock composition on product yield has been studied. It is shown that the feedstock composition decisively influences the yield and octane number. The model study have shown that the replacement for the PR-81 catalyst will increase the yield of 2.5-3.5% wt.

Pd/Al2O3, Pd/SiO2 and their mechanical mixtures with SO42-/ZrO2/Al2O3 were prepared and tested in isomerization of n-hexane. The best catalytic performance was reached on the alumina systems where a part of palladium atoms was in the charged state.

Pd/SO 4 2 -/ZrO 2 /Al 2 O 3 catalysts are prepared and investigated in reaction of isomerization of N-hexane in the work. For comparison Pt/SO 4 2 -/ZrO 2 /Al 2 O 3 catalysts are investigated. It is established that in the field of low temperatures (140 °C) the catalyst on the basis of palladium shows high rates comparable to the Pt-containing catalyst. At more high temperatures yielding of isomers for Pd/SO 4 2 -/ZrO 2 /Al 2 O 3 catalyst are lower, than for Pt/SO 4 2 -/ZrO 2 /Al 2 O 3 . However, isomerization depth (the maintenance of a 2, 2-dimetilbutan in mix of C 6 isomers) for the palladic catalyst in all studied range of temperatures exceeds for 6-10% a similar indicator for the platinum catalyst. For clarification of the role of condition of palladium the catalysts Pd/Al 2 O 3 , Pd/SiO 2 were prepared and investigated. It was established that the best indicators are reached on the aluminum oxide systems in which palladium is in the oxidized state.

The paper presents the results of the carrier acidity impact studying on the Pt-Re/Al 2 O 3 catalytic properties in gasoline reforming. The Pt-Re/Al 2 O 3 catalyst preparation based on the superacidity carrier in consequence of the presence of promotor - the bayerite phase of aluminum hydroxide resulted in the H-C 7 predominat cracking to C 3 -C 6 light paraffins. The obtained catalyst allows to produce the reduced aromatics content reformed gasoline (55%wt).

Pt/MOR–Al2O3 catalysts, with platinum supported from H2PtCl6 and [Pt(NH3)4]Cl2 solutions are investigated in the work with the methods of IR spectroscopy. The received results testify about platinum fixing mainly in channels of a mordenite in case of supporting from an ammine, and its localization on Al2O3 surface when supporting from chloroplatinic acid. Small concentration of the absorption bands referred to bridging CO species on platinum testify about high dispersion of metal on samples. Data explain higher activity of the catalysts prepared with [Pt(NH3)4]Cl2 in reactions of a hydroisomerization of benzene and an isomerization of cyclohexane.