Nanocrystal cerium zirconium composite oxide, its preparation and application

US6605565B1 · kind B1 · utility

Assignees

• Shanghai Yue Long Non-Ferrous Metals Ltd. · CN
• TONGJI UNIVERSITY · CN

Inventors

• Deyuan Zhang · Tangxia, CN
• Zhenhua Wang · Kawasaki, JP
• Shixin Lu · Shanghai, CN
• Jieda Wu · Shanghai, CN
• Yeming Wang · Beijing, CN
• Yuxiang Yang · Shanghai, CN
• Shaogang Wang · Hubei, CN

Key dates

• Filing date: Feb 3, 2000
• Grant date: Aug 12, 2003
• Expiry date: Feb 3, 2020

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/12
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A nanocrystal cerium zirconium composite oxide and its preparation and application are disclosed. The nanocrystal cerium zirconium composite oxide of the present invention comprises 4-98% by weight of CeO2 and 1-95% by weight of ZrO2, the crystalline particle size thereof is 100 nm or less, and the ignition loss thereof after igniting at 900° C. for one hour is smaller than 5%.