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:
Mar. 28, 2023
Filed:
Oct. 27, 2016
Magnesium Elektron Limited, Manchester, GB;
Deborah Jayne Harris, Manchester, GB;
David Alastair Scapens, Manchester, GB;
Magnesium Elektron Limited, Manchester, GB;
Abstract
A cerium-zirconium based mixed oxide composition have: (a) a Ce:Zr molar ratio of 1 or less, and (b) a cerium oxide content of 10-50% by weight. The composition has (i) a surface area of at least 18 m/g, and a total pore volume as measured by Nphysisorption of at least 0.11 cm/g, after ageing at 1100° C. in an air atmosphere for 6 hours, (ii) a surface area of at least 42 m/g, and a total pore volume as measured by Nphysisorption of at least 0.31 cm/g, after ageing at 1000° C. in an air atmosphere for 4 hours, and (iii) Dynamic Oxygen Storage Capacity (D-OSC) value as measured by H-TIR of greater than 500 μmol/g at 600° C. after aging at 800° C. in an air atmosphere for 2 hours. A process contacts the exhaust gas with the composition Another process is for preparing the composition.