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. 04, 2002
Filed:
Mar. 05, 2001
Abstract
The present invention relates to a porous aluminum oxide structure comprising Al O and Zr, the structure having an open porosity greater than about 30% and an average pore size from about 20 nm to about 1000 nm, wherein the Zr, expressed as ZrO , has a concentration less than about 5 weight % of the weight of the Al O . The present invention also relates to a process for producing a porous aluminum oxide structure comprising Al O and Zr, the structure having an open porosity greater than about 30% and an average pore size from about 20 to about 1000 nm, through doping alumina or precursors thereof with a doping effective amount of Zr, wherein the Zr, expressed as ZrO , has a concentration less than about 5 weight % of the weight of the Al O , the process comprising: introducing the Zr into the alumina or the precursors thereof, the Zr being selected from at least one ZrO powder, a solution of a Zr precursor, or mixtures thereof, by admixing the Zr with the alumina or the precursors thereof, forming a green body, drying the green body, and sintering the dried body to produce the porous aluminum oxide structure.