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:
Oct. 25, 2005
Filed:
Aug. 01, 2002
Daxiang Wang, Ponca City, OK (US);
Tianyan Niu, Ponca City, OK (US);
Gloria I. Straguzzi, Ponca City, OK (US);
Harold A. Wright, Ponca City, OK (US);
Robin G. Cnossen, Ponca City, OK (US);
Daxiang Wang, Ponca City, OK (US);
Tianyan Niu, Ponca City, OK (US);
Gloria I. Straguzzi, Ponca City, OK (US);
Harold A. Wright, Ponca City, OK (US);
Robin G. Cnossen, Ponca City, OK (US);
ConocoPhillips Company, Houston, TX (US);
Abstract
A pretreatment method for increasing the average pore size of a catalyst support is disclosed which increases the diffusivity and effectiveness factor η. The pretreatment method includes calcining the support in moisturized air at an elevated temperature sufficient to increase the average pore size. In some embodiments, the support may be treated with an acidic/basic solution prior to the calcination step. Alternatively, the calcination step may occur in a gas mixture including water/air/acidic (or basic) gases.