FIELD: chemistry.
SUBSTANCE: present invention relates to catalysis, and specifically to methods of preparing catalysts for gas-phase redox reactions. The method of preparing a catalyst based on a complex oxide with perovskite structure involves preparation of a metal support with given configuration, depositing an intermediate aluminium oxide layer, layer-by-layer deposition of a catalyst coating from an aqueous solution which contains metal components of a complex oxide in form of salts and a water-soluble polymer, where during deposition of the catalyst coating, one or more first layers are deposited from an aqueous solution of a manganese compound and a water-soluble polymer or an aqueous solution of a manganese and a lanthanum compound and a water-soluble polymer. Total mass of the coating is kept constant and after deposition, each layer is roasted at 873-1173 K for 0.5-5 hours.
EFFECT: lower cost of the catalyst and its preparation method with high activity of the catalyst.
2 ex, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| CATALYST PREPARATION METHOD | 2008 |
|
RU2395342C1 |
| METHOD FOR PRODUCING CATALYST | 1992 |
|
RU2047354C1 |
| METHOD OF PREPARING CATALYST | 1999 |
|
RU2147927C1 |
| METHOD FOR PRODUCING CATALYTICALLY ACTIVE COMPOSITE MATERIAL | 2017 |
|
RU2641290C1 |
| METHOD FOR OBTAINING CATALYTICALLY ACTIVE COMPOSITE LAYERS ON ALUMINIUM ALLOY | 2014 |
|
RU2571099C1 |
| METHOD OF PRODUCING COMPOSITE OXIDE MATERIALS | 2019 |
|
RU2733966C1 |
| METHOD OF PRODUCING COMPLEX METAL OXIDES | 2007 |
|
RU2383495C2 |
| METHOD FOR MAKING CATALYST ON BAND METALLIC CARRIER | 2001 |
|
RU2205787C2 |
| CATALYTIC BLOCK BASED ON NICKEL FOAM AND ALLOYS THEREOF FOR PURIFYING GASES FROM ORGANIC COMPOUNDS, INCLUDING BENZPYRENES, DIOXINS, NITROGEN OXIDES, AMMONIA, CARBON AND OZONE | 2012 |
|
RU2491993C1 |
| METHOD FOR PREPARATION OF CATALYST FOR OXIDATION OF GASEOUS AND VAPOUROUS HYDROCARBONS AND FOR CATALYTIC SELECTIVE REDUCTION DeNO | 2007 |
|
RU2362625C2 |
