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US5637546A Preparation of catalytically active poly-metal oxide materials which contain the elements V and Mo in oxide form as basic components 失效
制备含有氧化物形式的元素V和Mo作为基本组分的催化活性多金属氧化物材料

Preparation of catalytically active poly-metal oxide materials which
contain the elements V and Mo in oxide form as basic components
摘要:
In a process for the preparation of catalytically active poly-metal oxide materials containing Mo and V, a catalyst intermediate is calcined at from 300.degree. to 450.degree. C. in a gas atmosphere which, in addition to inert gases and/or steam, consists of from 0.5 to 4% by volume of O.sub.2 and, averaged over the calcination time, from 1 to 8% by volume of NH.sub.3.
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