CONTINUOUS METHOD FOR DIRECTLY SYNTHESIZING METHYLCHLOROSILANE

PROBLEM TO BE SOLVED: To provide a method for directly synthesizing a methylchlorosilane in improved productivity, while maintaining the good selectivity of dimethyldichlorosilane. SOLUTION: This continuous method for directly synthesizing a methylchlorosilane comprises reacting a chloromethane with...

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Hauptverfasser:	GROSS JOCHEN, STRECKEL WILLIBALD, KALCHAUER WILFRIED, STRAUSBERGER HERBERT
Format:	Patent
Sprache:	eng
Schlagworte:	ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM APPARATUS THEREFOR CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY GENERAL METHODS OF ORGANIC CHEMISTRY METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method for directly synthesizing a methylchlorosilane in improved productivity, while maintaining the good selectivity of dimethyldichlorosilane. SOLUTION: This continuous method for directly synthesizing a methylchlorosilane comprises reacting a chloromethane with silicon in the presence of a catalyst composition comprising a zinc auxiliary catalyst and a copper catalyst selected from (a) a copper oxide, (b) a mixture of at least 80 wt.% of a copper oxide with copper (I) chloride, (c) copper (I) chloride, and (d) a mixture of at least 80 wt.% of copper (I) chloride with a copper oxide. Therein, the copper catalysts (a), (b), (c) and (d) are used, while alternating from the copper catalysts (a) or (b) to (c) or (d), or from the copper catalysts (c) or (d) to (a) or (b).