FIELD: chemistry.
SUBSTANCE: invention relates to a gas-phase method of catalytic conversion of lower alkanes. A method is described for catalytic conversion of lower alkane, containing up to 5 carbon atoms, into at least one product which is chosen from a group consisting of alcohols, aldehydes and their mixture, involving bringing said lower alkane into contact with an oxidising agent in the presence of a catalyst, containing a platinum complex which is deposited on a carrier, with the following structure: in which: L is a ligand, which is chosen from amino-ligands, hydroxyl ligands and imidazolyl ligands; A is a ligand which is chosen from hydroxyl ligands, chloro-ligands and amino-ligands; M is a metal cation in the catalyst carrier, which is chosen from cations of aluminium, silicon, zirconium, titanium and molybdenum; and n is an integer, which is chosen from 4, 2 and 1, Pt in the catalyst is a cation in a valent state which is chosen from valent states (IV), (II) and (I), which correspond to numerical values of n, where the said platinum cation forms the central core of the platinum complex, ligands L and ligands A surround the central core and ligands L chemically bond the complex to the surface of the carrier, under which metal cations M are localised.
EFFECT: high conversion and selectivity of formation of methanol in direct oxidation of methane or natural gas with air or molecular oxygen in the presence of catalyst promoters.
15 cl; 4 tbl, 12 ex
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Authors
Dates
2009-11-10—Published
2004-10-12—Filed