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:
Jun. 20, 1989
Filed:
Jun. 12, 1986
Applicant:
Inventors:
Rene B LaPierre, Medford, NJ (US);
Randall D Partridge, Ewing, NJ (US);
Paul T Reischman, Lambertville, NJ (US);
George T Kerr, Lawrenceville, NJ (US);
Assignee:
Mobil Oil Corporation, New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
B01J / ;
U.S. Cl.
CPC ...
502 79 ; 502 77 ; 423328 ;
Abstract
Zeolite Y and other faujasite type zeolites are made stable to acid by calcination in a steam-containing atmosphere with a slow, controlled heating rate in the temperature range at which chemically bound water in the zeolite is given off, generally from 500.degree. C. to 650.degree. C. The stabilized product may be extracted with acid to produce a zeolite having a higher silica:alumina ratio. The high silica forms of zeolite ZSM-20 which may be produced by this method are novel materials.