发明名称 |
SELECTIVE NOx REDUCTION CATALYST |
摘要 |
A NOx catalyst is provided that can realize a favorable NOx reduction in a broad temperature region and that can lighten the overhead involved in production. The NOx catalyst has active components exhibiting a selective reduction activity for NOx, wherein the active components exhibiting the selective reduction activity contains a high-temperature active component having a relatively high NOx reduction activity at high temperatures and a low-temperature active component having a relatively high NOx reduction activity at low temperatures; and the high-temperature active component and the low-temperature active component are disposed in a mixed state in a primary particle of the catalyst particle, and an active component ratio on a surface side of the primary particle is larger than an active component ratio on an interior side of the primary particle, with the active component ratio being is a ratio of a concentration of the high-temperature active component to a concentration of the low-temperature active component in the primary particle. |
申请公布号 |
WO2015125496(A1) |
申请公布日期 |
2015.08.27 |
申请号 |
WO2015JP00882 |
申请日期 |
2015.02.23 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
OTSUKI, HIROSHI;NISHIOKA, HIROMASA;TSUKAMOTO, YOSHIHISA;NOTAKE, YASUMASA |
分类号 |
B01D53/94;B01J29/064;B01J37/30;F01N3/20 |
主分类号 |
B01D53/94 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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