METHOD AND THE SEMI-PRODUCT USED FOR PRODUCTION OF THE MESO-POROUS TITANIUM DIOXIDE Russian patent published in 2007 - IPC C01G23/53 B01J21/06 B01J35/10 

FIELD: chemical industry; methods of production of the catalytic agents of photochemical reaction and sorbents-catalysts of heterogeneous photochemical processes.

SUBSTANCE: the invention is pertaining to the field of chemical industry and may be used in production of the catalytic agents of photochemical reaction and the sorbents-catalysts of heterogeneous photochemical processes of oxidizing of the harmful organic compounds. The precursor in the form of titanium tetraalcoxide and template of the organic nature are introduced into the water-organic dissolvent. The mixture of the reactants is intermixed up to formation of the sol and is kept till the final formation of the special structure. The gained reaction product is separated and treated removal of the template using calcifying or the extraction by the alcohol after preliminary hydrothermal treatment. In preferential version of the invention the water-alcohol dissolvent is additionally introduced with the salt of lanthanum. The invention allows to produce the reproducible sorbent-photocatalyst with the high attributes: the crystal phase of the anatase - no less than 30 mass %, a mean diameter of the pores - 2-16 nanometers, the specific surface - no less than 70 m²/g, does not contain the non-desirable impurities.

EFFECT: the invention ensures production of the reproducible sorbent-photocatalyst with the high attributes of thee crystal phase of the anatase, the effective diameter of the pores, the specific surface at absence of the non-desirable impurities.

7 cl, 68 ex