Phosphorus/vanadium catalyst preparation

Details Phosphorus/vanadium catalyst preparation Phosphorus/vanadium catalyst preparation

B - Operations, Transporting

01

J

B01J 27/198 (2006.01)

Patent

CA 2524218

A process for preparing a catalyst for maleic anhydride production wherein a +5 vanadium compound such as , an anhydrous phosphonic acid, and optionally promoters are admixed in an organic alcohol solvent, the admixture is rapidly brought to reflux and thereafter refluxed to reduced the vanadium compound to the desired degree, the reflux mixture is cooled, precursor crystals are separated by filtration and then dried and calcined.

L'invention concerne un procédé de préparation d'un catalyseur destiné à la production d'anhydride maléique, dans lequel un composé de vanadium +5 tel que V¿2?O¿5?, un acide phosphorique anhydre et éventuellement des promoteurs sont mélangés dans un solvant alcoolique organique, le mélange étant rapidement amené à refluer et ultérieurement reflué afin de réduire le composé de vanadium jusqu'au degré souhaité, le mélange de reflux étant refroidi, des cristaux précurseurs étant séparés par filtration puis séchés et calcinés.

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