ULTRA-THIN ANATASE TITANIUM DIOXIDE, STABILISED WITH SILICON DIOXIDE, VANADIUM DIOXIDE-BASED CATALYSTS AND METHODS OF OBTAINING THEREOF Russian patent published in 2015 - IPC B01J21/06 B82B1/00 B01J23/30 B01J23/22 B01D53/94 B01D53/56 B01J37/04 B01J37/06 B01J37/08 

FIELD: chemistry.

SUBSTANCE: invention relates to the field of selective catalytic reduction of nitrogen oxides, namely to a material of a carrier for the catalyst, used in the said process. The claimed carrier material represents particles of anatase titanium dioxide, including ≥85% by dry weight of TiO₂ and ≤10% by dry weight of SiO₂, with (i) SiO₂ being mainly in the form, selected from the group, consisting of forms with the low molecular weight, nanoparticles and their combinations; and (ii) at least 50% of silicon atoms being in states Q³, Q², Q¹ and Q⁰ of the coordination environment. The invention also relates to a catalytic device for the neutralisation of Diesel exhaust, including such particles, a system for Diesel exhaust regulation, including the said catalytic device, a method in which the conversion of nitrogen oxides is catalysed in the presence of the claimed particles of anatase titanium dioxide, as well as to methods of obtaining the said particles.

EFFECT: claimed particles make it possible to increase the thermal stability of the final catalyst with the preservation or increase of the catalytic activity for the selective catalytic reduction of nitrogen oxides from mobile devices, operating on lean mixtures.

44 cl, 18 dwg, 15 tbl, 18 ex