Zirconia-Based Compositions for Use in Passive NO_x Adsorber Devices

Authors

Deborah Jayne Harris, Magnesium Elektron Ltd., UK
David Alastair Scapens, Magnesium Elektron Ltd., UK
John G. Darab
Mark Crocker, University of KentuckyFollow
Yaying Ji, University of KentuckyFollow

US Patent Number

10,500,562

Publication Date

12-10-2019

Abstract

A passive NO_x adsorbent includes: palladium, platinum or a mixture thereof and a mixed or composite oxide including the following elements in percentage by weight, expressed in terms of oxide: 10-90% by weight zirconium and 0.1-50% by weight of least one of the following: a transition metal or a lanthanide series element other than Ce.

Although the passive NO_x adsorbent can include Ce in an amount ranging from 0.1 to 20% by weight expressed in terms of oxide, advantages are obtained particularly in the case of low-Ce or a substantially Ce-free passive NO_x adsorbent.

Assignees

Magnesium Elektron Ltd., Manchester (GB); The University of Kentucky Research Foundation, Lexington, KY (US)

Application Number

15/945,770

Filing Date

4-5-2018

Recommended Citation

Harris, Deborah Jayne; Scapens, David Alastair; Darab, John G.; Crocker, Mark; and Ji, Yaying, "Zirconia-Based Compositions for Use in Passive NO_x Adsorber Devices" (2019). Chemistry Faculty Patents. 41.
https://uknowledge.uky.edu/chemistry_patents/41