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. 08, 1991
Filed:
Sep. 12, 1988
Applicant:
Inventors:
Richard G Copperthwaite, Johannesburg, ZA;
Themistoclis Themistocleous, Braamfontein, ZA;
Graham J Hutchings, North Yorkshire, GB;
Assignee:
Pratley Investments (Proprietary) Limited, Krugersdorp, ZA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ; B01J / ;
U.S. Cl.
CPC ...
502 85 ; 502 60 ;
Abstract
There is disclosed a method for the modification of a natural clinoptilolite by acid treatment using a mineral acid at a suitable temperature and for a suitable period of time, followed by calcination, to produce a modified clinoptilolite which may be used as a catalyst in a reaction for the preparation of or transformation of hydrocarbons, e.g. the cracking of hydrocarbon products. There is also disclosed a method of regenerating the deactivated modified catalyst after use by treatment in the presence of nitrous oxide.