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:
Feb. 26, 2002
Filed:
Sep. 01, 1999
Applicant:
Inventors:
Mark Laurence Doyle, Herts, GB;
Neil Edwards, Reading, GB;
Assignee:
Johnson Matthey Public Limited Company, London, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D 5/322 ; B01D 5/912 ; B01D 5/914 ; H01M 8/06 ; H01M 8/18 ;
U.S. Cl.
CPC ...
B01D 5/322 ; B01D 5/912 ; B01D 5/914 ; H01M 8/06 ; H01M 8/18 ;
Abstract
A gas separation device for the removal of carbon oxides from a hydrogen-rich gas stream in the form of a composite comprising a hydrogen diffusion membrane and a methanation catalyst. The hydrogen diffusion membrane may be applied to the upstream surface of a porous or microporous support and the methanation catalyst may be applied to the downstream surface of the porous or microporous support. The gas separation device is particularly useful for negating pinhole leakages of carbon monoxide through palladium alloy membrane by virtue of the polishing-up action of the methanation catalyst