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:
Jan. 31, 1984
Filed:
Aug. 26, 1982
Bernard D Dombek, Charleston, WV (US);
George L O'Connor, Charleston, WV (US);
Union Carbide Corporation, Danbury, CT (US);
Abstract
A homogeneous catalytic process wherein a gaseous or vaporized reactant stream is continuously introduced into a liquid phase mixture containing (a) a volatile precious metal catalyst, and (b) methanol and/or ethanol as reactant or reaction product, at least a portion of the volatile precious metal being continuously removed from the liquid phase mixture by the effluent gas and/or vapor stream, and such effluent stream is an integral component of a cyclic process stream and/or a vent stream discharged from the process. The improvement is concerned with recovery of the volatilized precious metal and returning it to the liquid phase mixture which comprises passing one or both of said cyclic or vent streams through a liquid body of alcohol selected from the group consisting of methanol, ethanol and mixtures thereof at a temperature sufficiently low to effect the removal of at least a portion of the precious metal contained in said stream, and thereafter periodically or continuously introducing to the liquid phase mixture at least a portion of said liquid body containing the recovered precious metal.