Preparation of anhydrous niobium and tantalum pentafluorides

Details Preparation of anhydrous niobium and tantalum pentafluorides Preparation of anhydrous niobium and tantalum pentafluorides

C - Chemistry, Metallurgy

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C01G 33/00 (2006.01) B01J 27/12 (2006.01) C01B 9/08 (2006.01) C01G 35/02 (2006.01) C07C 17/087 (2006.01) C07C 17/21 (2006.01)

Patent

CA 2088781

A method of producing an anhydrous niobium or tantalum pentafluoride involving reacting the corresponding pentoxide or oxyhalide with an excess of anhydrous hydrogen fluoride in the presence of a sufficient dehydrating agent (e.g,, COCI2, SOC12 or SO~C12) to react with any water formed. Such a process is useful to produce a catalytically active anhydrous niobium or tantalum pentafluoride in essentially a single liquid phase reaction step.

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