Synthesis of phosphorus pentafluoride by fluorination of...

C - Chemistry – Metallurgy – 01 – B

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C01B 25/10 (2006.01)

Patent

CA 2223658

The invention relates to the manufacture of phosphorus pentafluoride by fluorination of phosphorus trichloride with anhydrous hydrofluoric acid in the presence of chlorine. The reaction is carried out in a continuous or discontinuous liquid phase. The process according to the invention ensures a high rate of PF5 conversion.

L'invention concerne la fabrication de penta-fluorure de phosphore par fluoration du trichlorure de phosphore avec de l'acide fluorhydrique anhydre en présence de chlore. La réaction est réalisée en phase liquide de manière continue ou discontinue. Le procédé selon l'invention permet d'assurer un taux de conversion en PF5 élevé.

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