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. 21, 2009
Filed:
Feb. 18, 2005
Cetin Kilic, Mountain View, CA (US);
Jangsuk Hyun, Palo Alto, CA (US);
Ligen Wang, Palo Alto, CA (US);
Mats Larsson, Sunnyvale, CA (US);
Juan Cai, Fremont, CA (US);
Jifei Jia, Mountain View, CA (US);
Xianghong Hao, Sunnyvale, CA (US);
Jonathan W. Woo, San Jose, CA (US);
Cetin Kilic, Mountain View, CA (US);
Jangsuk Hyun, Palo Alto, CA (US);
Ligen Wang, Palo Alto, CA (US);
Mats Larsson, Sunnyvale, CA (US);
Juan Cai, Fremont, CA (US);
Jifei Jia, Mountain View, CA (US);
Xianghong Hao, Sunnyvale, CA (US);
Jonathan W. Woo, San Jose, CA (US);
Nanostellar, Inc., Redwood City, CA (US);
Abstract
The catalytic efficiency of supported catalysts containing metal nanoparticles is strongly related to the chemical softness at the surfaces of such nanoparticles. Supported catalysts containing platinum nanoparticles having average surface softness values (expressed in scaled units ranging from 0 to 1) between 0.07198 and 0.09247 exhibit high catalytic efficiency. The catalytic efficiency of such platinum nanoparticles for CO oxidation, expressed as the turn-over frequency (TOF), was observed to be on or above 0.03062 s. The supported catalysts containing platinum nanoparticles with tighter average surface softness ranges exhibit even higher catalytic efficiencies. The TOF for CO oxidation of platinum nanoparticles having average surface softness values between 0.08031 and 0.08679 was observed to be on or above 0.06554 s.