CATALYST AND METHOD OF DECOMPOSING DINITROGEN MONOXIDE AND METHOD AND DEVICE FOR PRODUCING NITRIC ACID Russian patent published in 2010 - IPC B01J23/10 B01J23/70 B01J37/00 B01J35/04 C01B21/20 

FIELD: chemistry.

SUBSTANCE: invention relates to a special perovskite type compound, a catalyst which contains such a compound, a method of decomposing dinitrogen monoxide (N₂O), a device for producing nitric acid and a method of producing nitric acid. The invention also relates to use of the said perovskite type compound in decomposing N₂O. The invention describes the device used in the method of producing nitric acid at the ammonia oxidation step, which includes a perovskite type compound for decomposing dinitrogen monoxide having general formula (1). There is an ammonia oxidation catalyst, one or more separating gauzes and a perovskite type compound along the gas stream containing the product. The invention describes a method of producing nitric acid using the said device. Described also is a catalyst for use in the said device, which has a cellular support and a perovskite type compound of general formula (1). The invention also describes a method of decomposing dinitrogen monoxide for use in the device described above, which involves bringing dinitrogen monoxide into contact with the perovskite type compound of general formula (1) and using the said perovskite compound to decompose dinitrogen monoxide for use in the device described above.

EFFECT: decomposition of N₂O in the gas containing the product formed during oxidation of ammonia when producing nitric acid.

14 cl, 5 ex, 16 tbl, 1 dwg