METHOD OF PRODUCING ZEOLITES AND ZEOLITE-LIKE STRUCTURES DOPED WITH METALS, AND METHODS FOR USE THEREOF FOR CATALYTIC REDUCTION OF NITROGEN OXIDES Russian patent published in 2016 - IPC B01J37/02 B01J29/85 B01J29/76 B01J29/46 B01D53/94 

FIELD: chemistry.

SUBSTANCE: invention relates to a catalyst for reducing nitrogen oxides, which includes a material or a mixture of materials. Catalyst includes inert heat-resistant binder selected from a group comprising aluminium oxide, titanium oxide, non-zeolite silicon oxide-aluminium oxide, silicon oxide, zirconium oxide and mixtures thereof, is applied on ceramic monolith with through channels, foam metal substrate or on a substrate with filter walls. Material or mixture of materials is obtained by method of producing metal-doped zeolites and zeolite-like structures. Method comprises following steps: I) providing dry homogeneous mixture of zeolite or zeolite-like structure with one or more compounds-precursors, including a complex compound, formed by a transition metal and a ligand corresponding to structural formula (I): ML¹ _mL² _n (I), where M is a metal selected from a group comprising V, Cr, Mn, Fe, Co, Ni, Cu, Nb, Mo, Ru, Rh, Pd, Ag, and Ce, L¹ represents a carbonyl, amine, alkyl, alkoxy, alkene, arene, phosphine or other neutral coordination ligand, m represents an integer from 0 to 6, n is an integer equal to valence M, and L² is a diketonate or related component of this homologous series, for example a ligand which corresponds to formula (II): where R1 and R2 independently denote alkyl, substituted alkyl, aryl substituted aryl, acyl and substituted acyl; II) calcining mixture without application of low pressure at sufficient temperature and during time sufficient to ensure mobilisation and decomposition of compound-precursor; and III) production of metal-doped zeolite or zeolite-like structure. Invention also discloses solid catalyst for reducing nitrogen oxides and use of catalysts.

EFFECT: invention enables to obtain a catalyst without using solvents, and having advantages compared to existing methods with environmental and economically feasible.

12 cl, 34 dwg, 4 tbl, 1 ex