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:
Aug. 09, 1988
Filed:
Dec. 22, 1986
Applicant:
Inventors:
Reginald G Banks, Solihull, GB;
David R Bates, London, GB;
Stephen D Jones, Solihull, GB;
James A Oliver, Solihull, GB;
Assignee:
British Gas plc, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ; B01J / ; B01J / ; C07C / ;
U.S. Cl.
CPC ...
502259 ; 502 84 ; 502 85 ; 502257 ; 502258 ; 518711 ;
Abstract
Silicon containing methanation catalysts e.g. those prepared by coprecipitation techniques, may be stabilized to prevent leaching of silicon species by a hydrothermal treatment comprising heating the reduced catalyst in a steam reducing gas atmosphere, lowering the temperature until liquid water species condense out, reheating to evaporate the condensed water and passivation in a mildly oxidizing atmosphere.