Process for preparing hydridosilanes

Process for preparing hydridosilanes

The present invention relates to a process for preparing hydridosilanes from halosilanes, in which (a) (i) at least one halosilane of the generic formula SinX2n+2 (where n ≥ 3 and X = F, Cl, Br and/or I) and (ii) at least one catalyst are converted to form a mixture comprising at least one halosilan...

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Bibliographische Detailangaben
Hauptverfasser: WIEBER, STEPHAN, ZOELLNER, JOERG, KNIPPENBERG, UDO, SCHWAERTZKE, THORSTEN, HAUBROCK, JENS, BRAUSCH, NICOLE
Format: Patent
Sprache:chi ; eng
Schlagworte:
CHEMISTRY
COMPOUNDS THEREOF
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
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Beschreibung
Zusammenfassung:The present invention relates to a process for preparing hydridosilanes from halosilanes, in which (a) (i) at least one halosilane of the generic formula SinX2n+2 (where n ≥ 3 and X = F, Cl, Br and/or I) and (ii) at least one catalyst are converted to form a mixture comprising at least one halosilane of the generic formula SimX2m+2 (where m > n and X = F, Cl, Br and/or I) and SiX4 (where X = F, Cl, Br and/or I), and (b) the at least one halosilane of the generic formula SimX2m+2 is hydrogenated to form a hydridosilane of the generic formula SimH2m+2, the hydridosilane of the generic formula SimH2m+2 is separated from partially halogenated hydridosilanes of the general formula SimH(2m+2-y)Xy (where 1 < y < 2m+1), and the separated partially halogenated hydridosilanes of the general formula SimH(2m+2-y)Xy (where 1 < y < 2m+1) are hydrogenated again.