Process for the fluorination of boron hydrides

Details Process for the fluorination of boron hydrides Process for the fluorination of boron hydrides

C - Chemistry, Metallurgy

01

B

C01B 35/06 (2006.01) C01B 6/10 (2006.01) C07F 5/02 (2006.01)

Patent

CA 2465198

This invention relates to an improvement in a liquid phase process for the direct fluorination of borohydride salts including the B10H10-2 and B12H12-2 salts wherein said borohydride salt is contacted with fluorine, under conditions for forming said fluorinated borohydride salt. The improvement in the liquid phase process resides in effecting the fluorination of said borohydride raft in the presence of a reaction medium having an acidity between that of water and anhydrous HF. More specifically, the reaction medium should have a Hammett acidity, H o, between 0 > Ho> -11.

L'invention est une amélioration à un procédé en phase liquide pour la fluoration directe de sels de borohydrures, dont les sels B10H10-2 et B12H12-2, consistant à mettre en contact le sel de borohydrure avec du fluor, dans des conditions propices à la formation du sel de borohydrure fluoré visé. L'amélioration du procédé en phase liquide est d'effectuer la fluoration en présence d'un milieu réactionnel dont l'acidité se situe entre celle de l'eau et celle du HF anhydre. De manière plus précise, le milieu réactionnel devrait avoir une acidité de Hammett, Ho, de 0 > Ho > -11.

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