Supported catalyst

US9548501B2 · kind B2 · utility

Assignees

• The Research Foundation of State University Of New York Research Development Services, Binghamton University · US
• TOYOTA JIDOSHA KABUSHIKI KAISHA · JP
• AUDI AG · DE

Inventors

• Chuan-Jian Zhong · Londonderry, GB
• Brigid Wanjala · Johnson City, US
• Jin Luo · Vestal, US
• Peter N. Njoki · Binghamton, US
• Rameshwori Loukrakpam · Binghamton, US
• Minhua Shao · Hong Kong, CN
• Lesia V. Protsailo · Bolton, US
• Tetsuo Kawamura · Saitama, JP

Key dates

• Filing date: Dec 17, 2009
• Grant date: Jan 17, 2017
• Expiry date: Mar 5, 2030

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E60/50
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A supported catalyst is prepared by a process that includes establishing shell-removal conditions for a supported catalyst intermediate that includes capped nanoparticles of a catalyst material dispersed on a carbon support. The capped nanoparticles each include a platinum alloy core capped in an organic shell. The shell-removal conditions include an elevated temperature and an inert gas atmosphere that is substantially free of oxygen. The organic shell is removed from the platinum alloy core under the shell-removal conditions to limit thermal decomposition of the carbon support and thereby limit agglomeration of the catalyst material such that the supported catalyst includes an electrochemical surface area of at least 30 m2/gPt.