Mesoporous aluminosilicates with specific surface area up to 1030 m 2 /g and pore diameters from 33 to 43 Å were obtained using hexadecylamine and block copolymers of polyethylene and polypropylene oxides as structural directing agents. The synthesized materials were tested in catalytic cracking of hydrotreated vacuum gas oil at 500°C.

Mesoporous materials based on zirconia with a specific surface area of 350 to 680 m(2)/g, a pore volume of 0.28 to 0.75 cm(3)/g, and a pore diameter of 24 to 112 angstrom were obtained by template synthesis. The synthesis comprised two steps. In the first step, an aqueous surfactant solution and precipitated zirconium hydroxide were held under hydrothermal conditions. In the second step, the intermediate products thus obtained were treated with a silicon dioxide solution in tetraethylammonium hydroxide, followed by filtration and calcination in air. The materials show promise as supports for heterogeneous hydrocarbon conversion catalysts.

A number of new catalytically active materials based on structured mesoporous zirconium dioxide modified with (NH4)(10)W12O41 and (NH4)(2)WO4 were prepared, and their activity in the n-butane hydroisomerization reaction in a flow reactor over the temperature range 300-400 degrees C was studied. The technique of WO, introduction into mesoporous zirconia was found to be important for the formation of the Pt/WOx/ZrO2 (.) ySiO(2) system.