| 摘要 |
FIELD: chemistry.SUBSTANCE: invention relates to catalytic chemistry, particularly a method of producing aluminium-nickel-molybdenum catalysts for hydrofining diesel fuel by self-propagating high-temperature synthesis through an intermetallic alloy step. The method of producing the catalyst involves mixing dry powder of nickel, molybdenum and aluminium oxides in ratio of 35-67% molybdenum oxide, 9-17% nickel oxide, aluminium oxide - the balance; the obtained mixture is used to mould pellets of given size and mass, which are then placed into a refractory mould with an inner high-temperature protective coating; said mould is placed a centrifuge and then rotated with centrifugal acceleration of 4-80 g, where g gravitational acceleration; during rotation of the centrifuge, the pellets are burnt and the combustion process is maintained in an air atmosphere at temperature higher than the melting point of components of the mixture of the pellets until an intermetallic alloy is obtained; after removing from the centrifuge, the obtained alloy is then successively leached from aluminium with an alkali metal hydroxide solution for 20-60 minutes, washed and stabilised with 10% citric acid solution and 1% hydrogen peroxide solution.EFFECT: fewer steps of preparing the catalyst and obtaining a highly active catalyst.4 tbl, 4 ex |
