The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 05, 1993
Filed:
May. 28, 1992
Jeffrey Y Mui, Bellingham, MA (US);
Other;
Abstract
A method of preparing an active silicon/copper contact mass for the direct reaction of organic halides with silicon to make organohalosilanes by contacting a particle size distribution of silicon with a copper catalyst vapor, aerosol or a combination of vapor and aerosol. The copper catalyst aerosol can be produced by rapid nucleation of the vapor, by an exothermic reaction between copper metal and chlorine gas or by ultrasonic energy dispersion of a solution of a copper compound to a fine mist consisting of extremely fine particles 0.1 to 0.01 micron or smaller. The preferred copper catalyst is copper chloride. The small, sub-micron size copper chloride aerosol provides an efficient utilization of copper to form the active Cu-Si alloys on the silicon particles' surfaces. Also disclosed in a new, integrated production process which consists of methods to produce the copper chloride aerosol and feeding the aerosol into various mechanical mixing devices in which a particle size distribution of silicon can thoroughly make contact with the aerosol to form the active contact mass in one step.