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. 14, 2000
Filed:
Feb. 06, 1998
Applicant:
Inventors:
Stefano Peratello, Nova Milanese, IT;
Angela Carati, S. Giuliano Milanese, IT;
Assignee:
Eniricerche S.p.A., S. Donato Mil.se, IT;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01J / ; B01J / ;
U.S. Cl.
CPC ...
502217 ; 502223 ; 502339 ; 502349 ;
Abstract
A superacid catalyst comprising zirconium oxide having a purely tetragonal crystalline phase structure and whose surface has sulfate groups thereon in a quantity corresponding to the total coverage of the surface of the zirconium oxide by a monolayer of said sulfate groups, the zirconium oxide having a porosimetric distribution consisting of at least 70% of pores having a diameter ranging from 1-4 nm.