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US 8,080,494 B2Granted
Catalyst, exhaust gas purifying catalyst, and method of producing the catalyst
AssigneeNissan Motor Co., Ltd.
InventorsHirofumi Yasuda, Katsuo Suga, Makoto Aoyama, Toshiharu Miyamura
Life of this patent
Estimating the term…
Abstract
A catalyst 1 has a heat-resistant support 2 selected from among Al2O3, SiO2, ZrO2, and TiO2, and a first metal 4 supported on an outer surface of the support 2, and included by an inclusion material 3 containing a component of the support 2.
Claims12
An exhaust gas purifying catalyst, comprising:
- a heat-resistant support selected from among Al2O3, SiO2, ZrO2 and TiO2;
- a first metal supported on an outer surface of the heat-resistant support and comprising a composite particle containing a precious metal selected from among Pt, Pd, and Rh and a transition metal;
- and
- an inclusion material which contains a component selected from among Al2O3, SiO2, ZrO2 and TiO2 and in which the first metal is included in an exposed state to an outer surface of the heat-resistant support,
- wherein the first metal supported on the heat-resistant support is disposed in a pore of the inclusion material in order to form a barrier of the inclusion material around the first metal.
2 more elements
An exhaust gas purifying catalyst, comprising:
- a heat-resistant support selected from among Al2O3, SiO2, ZrO2 and TiO2;
- a first metal supported on an outer surface of the heat-resistant support and comprising a composite particle containing a precious metal selected from among Pt, Pd, and Rh;
- and
- an inclusion material which contains a component selected from among Al2O3, SiO2, ZrO2 and TiO2,
- wherein the first metal supported on the heat-resistant support is disposed in a pore of the inclusion material in order to form a barrier of the inclusion material around the first metal.
2 more elements
Dependencies are inferred from the claim text.