METHOD OF PRODUCTION OF THE COMPOSITE GRADIENT-POROUS MATERIAL Russian patent published in 2007 - IPC B01D71/02 

FIELD: chemical industry; other industries; methods of production of the composite gradient-porous material.

SUBSTANCE: the invention is pertaining to the field of inorganic chemistry and the technology of production of the porous materials. On the surface of the substrate apply the uniform layer of the dry powder the metal oxide selected from the group of oxides of titanium, zirconium, aluminum or silicon, execute formation of the gel out of the selected oxide by humidification of the surface of the layer by the electrolyte solution having the coagulating properties in the given system, and conduct drying, then, at least, once repeat the operations of application of the powder, formation of the gel and its drying. After that on the dried layer of the gel again uniformly apply the layer the selected powder, humidify it with the electrolyte solution having the peptizating properties in the given system, and conduct the drying, repeat, at least, once, the operations of application of the powder, humidification of the layer by the solution with peptizating properties and drying, then conduct the annealing. The invention ensures production of the high-quality gradient-porous structures characterized by the high efficiency at simplification of the process of their production.

EFFECT: the invention ensures production of the high-quality gradient-porous structures characterized by the high efficiency at simplification of the process of their production.

4 cl, 2 tbl