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US 9,308,516 B2Granted
Catalyst carrier for exhaust gas and exhaust gas-cleaning catalyst
AssigneeMitsui Mining & Smelting Co., Ltd.
InventorsOhki Houshito, Yunosuke Nakahara
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Abstract
Provided is a novel catalyst carrier for exhaust gas which relates to an OSC material containing a ceria-zirconia composite oxide and is able to enhance the low temperature properties and to exert excellent OSC even at the time of engine start and excellent exhaust gas purification performance. A catalyst carrier for exhaust gas containing a fluorite type ceria-zirconia composite oxide and ceria formed from the fluorite type ceria-zirconia composite oxide by phase separation proposed.
Claims6
A catalyst carrier for exhaust gas comprising:
- a fluorite type ceria-zirconia composite oxide;
- and
- ceria formed from the fluorite type ceria-zirconia composite oxide by phase separation,
- wherein a peak area ratio of a diffraction peak at 2θ=28.5° to a diffraction peak between 2θ=29.0 to 30.0° determined from an X-ray diffraction pattern using a CuKα ray obtained by an X-ray diffraction measurement is from 0.05 to 1.00.
1 more element
Dependencies are inferred from the claim text.