发明名称 |
EXHAUST GAS PURIFICATION APPARATUS |
摘要 |
<p>Disclosed is an exhaust gas purification apparatus comprising a water-absorbing system (1) and a NO<SUB>x</SUB>-absorbing system (2), wherein the water-absorbing system (1) comprises a Y-type zeolite, and the NO<SUB>x</SUB>-absorbing system (2) is arranged downstream to an exhaust gas discharged from the water-absorbing system (1), comprises a zeolite, and contains a transition metal ion in its cation exchange site. In the NO<SUB>x</SUB>-absorbing system (2), the NO<SUB>x</SUB>-absorbing ability is increased as the decrease in the water content of the exhaust gas. Therefore, when such a NO<SUB>x</SUB>-absorbing system is combined with a water-absorbing system comprising a Y-type zeolite (which has a high Al<SUB>2</SUB>O<SUB>3</SUB> content and can absorb a larger amount of water compared to other types of zeolite), the NO<SUB>x</SUB>-absorption ability at a lower temperature can be particularly improved.</p> |
申请公布号 |
WO2008117829(A1) |
申请公布日期 |
2008.10.02 |
申请号 |
WO2008JP55732 |
申请日期 |
2008.03.26 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA;KANAZAWA, TAKAAKI;SANO, KEISUKE;WAKAO, KAZUHIRO;YODA, KIMIKAZU;ITOU, TAKAAKI |
发明人 |
KANAZAWA, TAKAAKI;SANO, KEISUKE;WAKAO, KAZUHIRO;YODA, KIMIKAZU;ITOU, TAKAAKI |
分类号 |
B01D53/56;B01D53/28;B01D53/34;B01D53/81;B01D53/94;F01N3/10 |
主分类号 |
B01D53/56 |
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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