Evonik Degussa Gmbh

Thorsten Schwaertzke

Jens Haubrock

Stephan Wieber

Martin Trocha

Nicole Brausch

Imad Moussallem

Udo Knippenberg

Min-Zae Oh

Joerg Zoellner

The present invention relates to a continuous process for hydrogenating halogen-containing silane compounds having at least three silicon atoms, in which at least one halogen-containing silane compound having at least three silicon atoms and at least one hydrogenating agent are converted continuously to form at least one hydridosilane compound having at least 3 silicon atoms and oxidized hydrogenating agent, and wherein oxidized hydrogenating agent is withdrawn and reduced, and the reaction product of this reduction reaction is sent back to the hydrogenation, to the hydridosilane compounds obtainable by this process and to the use thereof.

Method for hydrogenating higher halogen-containing silane compounds

The present invention relates to a process for preparing hydridosilanes from halosilanes, in which a) i) at least one halosilane of the generic formula SiX(where n&#x2267;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 SiX(where m&#x3e;n and X=F, Cl, Br and/or I) and SiX(where X=F, Cl, Br and/or I), and b) the at least one halosilane of the generic formula SiXis hydrogenated to form a hydridosilane of the generic formula SiH, the hydridosilane of the generic formula SiHis separated from partially halogenated hydridosilanes of the general formula SiHX(where 1&#x3c;y&#x3c;2m+1), and the separated partially halogenated hydridosilanes of the general formula SiHX(where 1&#x3c;y&#x3c;2m+1) are hydrogenated again.

Process for preparing hydridosilanes

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Marl, Germany

Thorsten Schwaertzke