CATALYST OF PHOTOCHEMICAL REACTIONS ON THE BASIS OF MESOPOROUS TITANIUM DIOXIDE AND PROCESS FOR ITS PREPARATION

A catalyst of photochemical reactions on basis of mesoporous titanium dioxide contains crystalline phase of anatase in the amount not less than 30 per cent by weight, nickel in the amount from 0.5 to 2 per cent by weight, it has porous structure with average diameter of pores from 2 to 16 nm, specific surface area not less than 70 m2/g. A process for preparation of the mesoporous titanium dioxide includes introduction to water-organic solvent which contains not more than 7 per cent by weight of water of a precursor - titanium tetra-alkoxide and template of organic nature in the form of one of ligands selected from the group of macro-cyclic compounds, comprising oxa- and oxa-aza-macrocyclic compounds which contain not less than four atoms of oxygen, and/or from the complexes of said macro-cyclic compounds with metal ions selected from the group of alkaline, alkaline-earth, or f-metals, including lithium, potassium, sodium, rubidium, cesium, magnesium, calcium, strontium, barium, lanthanum and cerium, mixing the mixture of reagents at a temperature not higher than 35 DEGREE C up to formation of the ashes, mixture conditioning at the same temperature in open container under conditions of free access of water vapor to it from outside up to final formation of spatial structure, separation of obtained product of reaction and its treatment prior to removal of the template and after removal of the template from the spatial pattern - its treatment by the solution on nickel salt and then by the solution of borane of alkaline metal up to formation of metal nickel.