Method for the synthesis of silanes or organosilicon...

C - Chemistry – Metallurgy – 07 – F

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C07F 7/08 (2006.01) C01B 6/04 (2006.01)

Patent

CA 2121931

A method for the synthesis of silanes or organosilicon hydrides by the reduction of the corresponding silicon halides or organosilicon halides with a magnesium hydride in a liquid reaction medium is carried out by utilizing the following distinguishing features: a) the use of non-pyrophoric, preferably autocatalytically produced, storage magnesium hydride as magnesium hydride, b) the use of conventional ethers as reaction medium, and c) the continuous removal of the magnesium halide formed being deposited on the surface of the magnesium hydride particles during the reaction by the action of mechanical energy or ultrasound so as to form a fresh surface .

Méthode pour la synthèse de silanes ou d'hydrures de d'organosilicium, par réduction des halogénures de silicium ou d'organosilicium avec un hydrure de magnésium dans un milieu de réaction liquide. La méthode se caractérise par : a) l'emploi d'hydrure de magnésium non pyrophorique pour stockage, produit de préférence par autocatalyse; b) l'utilisation d'éthers-oxydes classiques comme milieu de réaction; c) l'élimination en continu de l'halogénure de magnésium formé, déposé à la surface des particules d'hydrure de magnésium pendant la réaction, par application d'une énergie mécanique ou d'ultra-sons pour avoir une surface fraîche.

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