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:
Apr. 13, 1993
Filed:
Oct. 18, 1991
Applicant:
Inventor:
John R McCauley, Louisville, MD (US);
Assignee:
UOP, Des Plaines, IL (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ; B01J / ;
U.S. Cl.
CPC ...
502 65 ; 502 61 ; 502 68 ; 502 73 ;
Abstract
Hydrothermally stable intercalated clays having interlayer (gallery) spacings greater than 21 angstroms are provided by pillars comprising a rare earth metal. The pillars preferably also contain a metal such as aluminum. Other pillaring metal/rare earth combinations and differing preparation conditions, such as pH, result in different interlayer spacings. Interlayer spacings of up to 50 angstroms may be produced.