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. 09, 2013
Filed:
Jan. 13, 2010
Xianghong Hao, Foster City, CA (US);
Ramesh Sharma, Sunnyvale, CA (US);
Geoffrey Mccool, Hayward, CA (US);
Brian Harrison, Sandy, GB;
Dietmar Wahl, Neustadt/Weinstrasse, DE;
Xianghong Hao, Foster City, CA (US);
Ramesh Sharma, Sunnyvale, CA (US);
Geoffrey McCool, Hayward, CA (US);
Brian Harrison, Sandy, GB;
Dietmar Wahl, Neustadt/Weinstrasse, DE;
WGCH Technology Limited, London, GB;
Abstract
A supported palladium-gold catalyst is produced under mild conditions using a commonly available base, such as sodium hydroxide (NaOH) or sodium carbonate (NaCO). In this method, support materials and a base solution are mixed together and the temperature of the mixture is increased to a temperature above room temperature. Then, palladium salt and gold salt are added to the mixture while maintaining the pH of the mixture to be greater than 7.0 and keeping the mixture at a temperature above room temperature. This is followed by cooling the mixture while adding acetic acid to maintain the pH of the mixture to be within a desired pH range, filtering out the supported palladium-gold particles, washing with a pH buffer solution and calcining.