Low pressure drop, highly active catalyst systems using catalytically active gold

US7955570B2 · kind B2 · utility

Assignee

• 3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

• Thomas I. Insley · Lake Elmo, US
• Larry A. Brey · Woodbury, US
• Gina M. Buccellato · Eagan, US
• Duane D. Fansler · Dresser, US
• Marvin E. Jones · Elbow Lake, US
• Badri Veeraraghavan · Woodbury, US
• Thomas E. Wood · Windom, US

Key dates

• Filing date: Feb 28, 2007
• Grant date: Jun 7, 2011
• Expiry date: Mar 12, 2028

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01B2203/047
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Highly active, low pressure drop catalyst systems. Catalytically active material is provided on at least a portion of the channel sidewalls of a body comprising one or more flow-through channels. The channel sidewalls preferably bear a charge, e.g., an electrostatic or electret charge, to help adhere the catalytically active material to the sidewall. The catalytically active material preferably includes gold provided on a particulate support, and PVD techniques are used to deposit catalytically active gold onto the support. Optionally, the gold-bearing particulates may be charged as well in a manner to facilitate attraction between the particulates and the sidewalls.