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:
Mar. 31, 1987
Filed:
Jul. 24, 1985
Applicant:
Inventor:
James R Jennings, Cleveland, GB;
Assignee:
Imperial Chemical Industries PlC, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ; B01J / ;
U.S. Cl.
CPC ...
502328 ; 423363 ;
Abstract
An iron oxide containing precursor to a catalyst for e.g. ammonia synthesis, having a surface area above 10 m.sup.2 .multidot.g.sup.-1 also containing alumina and an alkaline earth. The alkaline earth may be present as an alkaline earth aluminate. The composition may be made by precipitation followed by calcination. For use as an ammonia synthesis catalyst precursor, an alkali metal, e.g. potassium, is preferably incorporated into the composition to promote catalytic activity. The presence of 'free' alkaline earth, as opposed to alkaline earth aluminate reduces the amount of alkali metal required.