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CATALYST CONTAINING OXIDES OF IRON, CHROMINIUM, POTASSIUM AND LANTHANUM, ITS PREPARATION AND ITS USE IN DEHYDROGENATION REACTIONS
CATALYST CONTAINING OXIDES OF IRON, CHROMINIUM, POTASSIUM AND LANTHANUM, ITS PREPARATION AND ITS USE IN DEHYDROGENATION REACTIONS
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机译:包含铁,铬,钾和镧的氧化物的催化剂,其制备及其在加氢反应中的应用
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摘要
A process for manufacturing catalysts containing, as oxides, iron, chromium, potassium, as well as a rare earth metal in a proportion, calculated in oxide weight, of 1-15% with respect to the final catalyst, comprises: a first step, wherein a product is prepared by a reaction between compounds of rare earth metal(s) and of another metal selected from Fe, Cr, Co, Al or V, and a calcination; and a second step wherein a mixture is formed between the product resulting from the first step, the other necessary reactants and water; the resulting paste is dried after optional shaping and calcined. A clayish material can be used in the step. The catalysts obtained present an improved efficiency in dehydrogenation reactions, particularly of ethylbenzene to styrene.
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