Of lower alkane hydrocarbon and mixed metal oxide catalyst was improved (AMM) oxidation process

摘要

Catalyst composition for the conversion of economic lower alkane hydrocarbon and I discloses a method. In a broad sense, the present invention provides a composition that has been treated exhibit catalytic activity in the ammoxidation of lower alkane hydrocarbons to produce an unsaturated nitrile in high yield, comprising a mixed metal oxide, a solid promoter I will be disclosed. In general, as an element, the solid oxide compositions of these, the group consisting of elements capable of forming one, positive ions, at least molybdenum (Mo), vanadium (V), niobium (Nb) and contain the active element to be selected from. In aqueous medium containing a promoter element source of one or more advantageously, a step of drying the material impregnated with the basic catalyst, the resulting mixed metal oxide catalyst composition; followed, the two substantially oxygen a gas atmosphere that does not contain, at elevated temperature comprising at least 400 ℃, is produced by processing steps including a step of heat treating the material is the dried. Also described ammoxidation process for converting lower alkanes and preparation of improved catalysts having a crystal structure of the predetermined.