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. 27, 1999
Filed:
Dec. 11, 1997
Applicant:
Inventors:
Joseph Alcaraz, Chicago, IL (US);
Jennifer S Holmgren, Bloomingdale, IL (US);
Assignee:
UOP LLC, Des Plaines, IL (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
501 12 ; 501 80 ; 501133 ; 423335 ;
Abstract
The need for silicas with large pore sizes can be met by hydrothermal treatment of a silica powder with a mineralizing agent. Pore sizes in the range 300-25,000 angstroms, and more particularly in the range up to 10,000 angstroms, are readily obtained using mineralizing agents such as hydroxide, carbonate, and fluoride at temperatures in the range 85-300.degree. C. A narrow, unimodal distribution of pores is typical.