CATALYST AND METHOD FOR PREPARING NITROUS OXIDE Russian patent published in 2003 - IPC

FIELD: inorganic chemistry, chemical technology, catalysts. SUBSTANCE: invention relates to catalysts and methods for preparing nitrous oxide (N₂O) by oxidation of ammonia with oxygen or oxygen-containing gas. Invention solves the problem for preparing active and selective with respect to N₂O catalyst with reduced content of active component. Invention describes catalyst and method for preparing nitrous oxide by oxidation of ammonia with oxygen or oxygen-containing gas including manganese-containing active component and oxide or mixture of oxides of alkali-earth metals. Catalyst comprises as an active component the composition representing mixed amorphous oxide phase of non-stoichiometric composition MnBi_xO_y (0.05 ≤ x ≤ 2.24; 2.08 ≤ y ≤ 5.36) or mixture of amorphous phase MnBi_xO_y of crystalline manganese-containing phase. Process for preparing nitrous oxide by oxidation of ammonia with oxygen or oxygen-containing gas is carried out in the presence of manganese-containing catalyst of above indicated composition is carried out at temperature 250-450 C. Invention provides preparing active and selective with respect to nitrous oxide catalyst with reduced content of active component. Nitrous oxide is used widely in different branches of industry: in semiconductive, perfume, medicinal and food industry. EFFECT: improved preparing method. 5 cl, 1 tbl