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:
Apr. 09, 1991
Filed:
Oct. 20, 1988
Applicant:
Inventor:
David J Gulliver, Hull, GB;
Assignee:
BP Chemicals Limited, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ; C01G / ;
U.S. Cl.
CPC ...
75413 ;
Abstract
A process for recovering Group VIII noble metals from tar is provided. The process involves heating a mixture of the Group VIII noble metal, tar and methyl iodide in a closed system at a temperature in excess of 50.degree. C. During the process the Group VIII noble metal is precipitated in an insoluble form which can be separated by e.g. filtration. Precipitation preferably takes place at a temperature in the range 120.degree. to 180.degree. C. The process is particularly suitable for the recovery of either rhodium or iridium.