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1. 发明申请

US20110099987A1 EXHAUST GAS PURIFICATION CATALYST 有权
标题翻译：排气净化催化剂
公开(公告)号：US20110099987A1
公开(公告)日：2011-05-05
申请号：US13001683
申请日：2009-06-26
申请人： Akemi Satou , Masahiko Takeuchi , Keizo Hiraku , Yusuki Kawamura , Takahiro Fujiwara , Tadashi Suzuki , Naoki Takahashi
发明人： Akemi Satou , Masahiko Takeuchi , Keizo Hiraku , Yusuki Kawamura , Takahiro Fujiwara , Tadashi Suzuki , Naoki Takahashi
IPC分类号： F01N3/10
CPC分类号： B01J23/002 , B01D53/945 , B01D2255/1021 , B01D2255/1023 , B01D2255/1025 , B01D2255/206 , B01D2255/20715 , B01D2255/9022 , B01D2255/908 , B01D2257/304 , B01J23/63 , B01J23/83 , B01J23/894 , B01J35/04 , B01J37/0244 , B01J2523/00 , Y02T10/22 , B01J2523/3712 , B01J2523/3718 , B01J2523/48 , B01J2523/828 , B01J2523/824 , B01J2523/822
摘要： An exhaust gas purification catalyst includes: a lower catalyst layer that contains a ceria-zirconia mixed oxide having 50 to 70 mass % of CeO2 and 5 mass % or more of Pr2O3 and carries at least one of Pt and Pd; and an upper catalyst layer that contains at least zirconia and carries at least Rh, wherein the total amount of CeO2 per liter of the carrier base is 15 to 30 g. Because the amount of CeO2 is small, formation of H2S is suppressed and a high capability of adsorbing and releasing oxygen is brought out in spite of the small amount of CeO2.
摘要翻译：废气净化催化剂包括：含有氧化铈 - 氧化锆混合氧化物的下部催化剂层，其具有50〜70质量％的CeO 2和5质量％以上的Pr 2 O 3，并携带Pt和Pd中的至少一种; 和至少含有氧化锆并至少含有Rh的上部催化剂层，其中每升载体碱的CeO 2的总量为15〜30g。由于CeO 2的量少，因此抑制了H 2 S的形成，并且尽管CeO 2的量少，但是吸附和释放氧的能力也很高。

2. 发明授权

US08551908B2 Exhaust gas purification catalyst 有权
标题翻译：废气净化催化剂
公开(公告)号：US08551908B2
公开(公告)日：2013-10-08
申请号：US13001683
申请日：2009-06-26
申请人： Akemi Satou , Masahiko Takeuchi , Keizo Hiraku , Yusuke Kawamura , Takahiro Fujiwara , Tadashi Suzuki , Naoki Takahashi
发明人： Akemi Satou , Masahiko Takeuchi , Keizo Hiraku , Yusuke Kawamura , Takahiro Fujiwara , Tadashi Suzuki , Naoki Takahashi
IPC分类号： B01J23/00 , B01J21/00
CPC分类号： B01J23/002 , B01D53/945 , B01D2255/1021 , B01D2255/1023 , B01D2255/1025 , B01D2255/206 , B01D2255/20715 , B01D2255/9022 , B01D2255/908 , B01D2257/304 , B01J23/63 , B01J23/83 , B01J23/894 , B01J35/04 , B01J37/0244 , B01J2523/00 , Y02T10/22 , B01J2523/3712 , B01J2523/3718 , B01J2523/48 , B01J2523/828 , B01J2523/824 , B01J2523/822
摘要： An exhaust gas purification catalyst includes: a lower catalyst layer that contains a ceria-zirconia mixed oxide having 50 to 70 mass % of CeO2 and 5 mass % or more of Pr2O3 and carries at least one of Pt and Pd; and an upper catalyst layer that contains at least zirconia and carries at least Rh, wherein the total amount of CeO2 per liter of the carrier base is 15 to 30 g. Because the amount of CeO2 is small, formation of H2S is suppressed and a high capability of adsorbing and releasing oxygen is brought out in spite of the small amount of CeO2.
摘要翻译：废气净化催化剂包括：含有氧化铈 - 氧化锆混合氧化物的下部催化剂层，其具有50〜70质量％的CeO 2和5质量％以上的Pr 2 O 3，并携带Pt和Pd中的至少一种; 和至少含有氧化锆并至少含有Rh的上部催化剂层，其中每升载体碱的CeO 2的总量为15〜30g。由于CeO 2的量少，因此抑制了H 2 S的形成，并且尽管CeO 2的量少，但是吸附和释放氧的能力也很高。

3. 发明授权

US09387464B2 Iron oxide-zirconia composite oxide and method for producing same, and exhaust gas purification catalyst 有权
标题翻译：氧化铁 - 氧化锆复合氧化物及其制造方法以及废气净化催化剂
公开(公告)号：US09387464B2
公开(公告)日：2016-07-12
申请号：US14384283
申请日：2013-04-26
申请人： Masahide Miura , Atsushi Tanaka , Takahiro Suzuki , Tadashi Suzuki , Toshitaka Tanabe , Naoki Takahashi
发明人： Masahide Miura , Atsushi Tanaka , Takahiro Suzuki , Tadashi Suzuki , Toshitaka Tanabe , Naoki Takahashi
IPC分类号： B01J23/00 , B01J23/08 , B01J23/10 , B01J23/40 , B01J23/42 , B01J23/44 , B01J23/56 , B01J23/70 , B01J23/74 , B01J23/89 , B01J35/00 , B01J23/745 , B01J23/83 , C01G25/00 , C01G49/00 , B01J37/02 , B01J37/03
CPC分类号： B01J23/894 , B01J21/066 , B01J23/10 , B01J23/745 , B01J23/83 , B01J35/0006 , B01J35/002 , B01J37/0248 , B01J37/03 , C01G25/00 , C01G49/0018 , C01G49/0054 , C01P2002/72 , C01P2004/03 , C01P2004/32 , C01P2004/45 , C01P2004/61 , C01P2006/12
摘要： A composite oxide with a high oxygen storage capacity is provided without using cerium. The composite oxide is an iron oxide-zirconia composite oxide containing iron, zirconium, and a rare-earth element. The total content of Fe2O3, ZrO2, and an oxide of the rare-earth element is not less than 90 mass %, the content of an iron oxide in terms of Fe2O3 is 10 to 90 mass %, and the absolute value of the covariance COV(Fe, Zr+X) of the composite oxide, which has been baked in the atmosphere at a temperature of greater than or equal to 900° C. for 5 hours or more, is not greater than 20.
摘要翻译：提供具有高储氧能力的复合氧化物，而不使用铈。复合氧化物是含有铁，锆和稀土元素的氧化铁 - 氧化锆复合氧化物。 Fe2O3，ZrO2和稀土类元素的氧化物的总含量为90质量％以上，Fe 2 O 3的氧化铁含量为10〜90质量％，协方差COV的绝对值在大气中在大气压900℃以上焙烧5小时以上的复合氧化物（Fe，Zr + X）不大于20。

4. 发明授权

US08795619B2 Catalyst for purification of exhaust gas, and apparatus and method for purification of exhaust gas using the catalyst 有权
标题翻译：用于净化废气的催化剂，以及使用该催化剂净化废气的装置和方法
公开(公告)号：US08795619B2
公开(公告)日：2014-08-05
申请号：US12599057
申请日：2008-05-08
申请人： Tadashi Suzuki , Satoru Kato , Naoki Takahashi , Takaaki Kanazawa , Masanori Yamato , Kazuhiro Yoshimoto , Michihiko Takeuchi , Yuuji Matsuhisa
发明人： Tadashi Suzuki , Satoru Kato , Naoki Takahashi , Takaaki Kanazawa , Masanori Yamato , Kazuhiro Yoshimoto , Michihiko Takeuchi , Yuuji Matsuhisa
IPC分类号： B01D50/00 , B01D53/34 , B01D53/04 , B01D53/56 , C01B17/16 , C01B31/20 , B01J27/00 , B01J27/185 , B01J21/00 , B01J21/04 , B01J25/00 , B01J23/00 , B01J23/02 , B01J23/04 , B01J23/08 , B01J23/40 , B01J23/42 , B01J23/44 , B01J23/56 , B01J23/58 , B01J20/00
CPC分类号： B01D53/9445 , B01D2255/20707 , B01D2255/20738 , B01D2255/20769 , B01D2255/20776 , B01D2255/9207 , B01D2257/304 , B01D2257/404 , B01D2257/502 , B01D2257/702 , B01J21/04 , B01J23/40 , B01J23/42 , B01J23/58 , B01J23/63 , B01J23/6525 , B01J23/6527 , B01J23/8906 , B01J35/002 , B01J35/04 , B01J35/1009 , B01J35/1014 , B01J35/1019 , B01J37/0205 , B01J37/0207 , B01J37/0242 , B01J37/08 , B01J37/28 , F01N2570/24 , Y02T10/22
摘要： A catalyst for purification of exhaust gas, in which a noble metal is supported on a metal oxide support, has a basic site content of 1 mmol/L-cat or less, as determined on the basis of an amount of CO2 desorbed per liter of the catalyst as measured by a CO2 temperature-programmed desorption method.
摘要翻译：用于净化贵金属负载在金属氧化物载体上的废气的催化剂的碱性位置含量为1mmol / L-cat以下，其基于每升脱附的二氧化碳的量催化剂通过CO 2温度程序解吸法测量。

5. 发明申请

US20120040824A1 EXHAUST GAS-PURIFYING CATALYST 有权
标题翻译：排气净化催化剂
公开(公告)号：US20120040824A1
公开(公告)日：2012-02-16
申请号：US13282803
申请日：2011-10-27
申请人： Minoru Itou , Michihiko Takeuchi , Tetsuya Shinozaki , Takaaki Kanazawa , Masaya Kamada , Tadashi Suzuki , Satoru Katoh , Naoki Takahashi
发明人： Minoru Itou , Michihiko Takeuchi , Tetsuya Shinozaki , Takaaki Kanazawa , Masaya Kamada , Tadashi Suzuki , Satoru Katoh , Naoki Takahashi
IPC分类号： B01J23/46
CPC分类号： F01N3/2828 , B01D53/9413 , B01D53/9472 , B01D2255/1021 , B01D2255/1023 , B01D2255/1025 , B01D2255/2065 , B01D2255/20715 , B01D2255/2092 , B01D2255/407 , B01D2255/902 , B01D2255/908 , B01J23/63 , B01J35/0006 , B01J35/04 , B01J37/0244 , F01N2550/02 , Y10S502/52712 , Y10S502/52713 , Y10S502/52719
摘要： An exhaust gas-purifying catalyst includes a support provided with one or more through-holes through which exhaust gas flows, and a catalytic layer supported by the support and containing an oxygen storage material. The exhaust gas-purifying catalyst includes a first section to which the exhaust gas is supplied, and a second section to which the exhaust gas having passed through the first section is supplied. The catalytic layer includes a layered structure of a first catalytic layer containing platinum and/or palladium and a second catalytic layer containing rhodium in the first catalytic section and further includes a third layer containing rhodium in the second section. The second section is smaller in oxygen storage material content per unit volumetric capacity than the first section.
摘要翻译：废气净化催化剂包括具有排气流过的一个或多个通孔的载体和由载体支撑并包含储氧材料的催化剂层。废气净化催化剂包括供给废气的第一部分和供给通过第一部分的废气的第二部分。催化层包括在第一催化部分中含有铂和/或钯的第一催化剂层和含有铑的第二催化剂层并且还包括在第二部分中含有铑的第三层的层状结构。第二部分比第一部分的每单位体积容量的储氧材料含量较小。

6. 发明申请

US20090188240A1 APPARATUS FOR PURIFICATION OF EXHAUST GAS AND METHOD FOR PURIFICATION OF EXHAUST GAS USING THE SAME 审中-公开
标题翻译：用于净化排气的装置和使用其排出的排气的方法
公开(公告)号：US20090188240A1
公开(公告)日：2009-07-30
申请号：US12300654
申请日：2007-06-11
申请人： Tadashi Suzuki , Naoki Takahashi , Ichiro Hachisuka
发明人： Tadashi Suzuki , Naoki Takahashi , Ichiro Hachisuka
IPC分类号： F01N9/00 , F01N3/10
CPC分类号： F01N3/206 , B01D53/9445 , B01D53/9459 , B01D53/9477 , B01D2251/102 , B01D2251/11 , B01D2255/20738 , B01D2255/20753 , B01J23/002 , B01J23/894 , B01J37/0242 , B01J2523/00 , F01N3/021 , F01N3/0814 , F01N3/0842 , F01N3/0885 , F01N3/32 , F01N9/00 , F01N13/009 , F01N13/0093 , F01N2560/025 , F01N2560/06 , F01N2610/04 , F01N2610/08 , F01N2610/146 , F01N2900/08 , Y02A50/2324 , Y02T10/22 , Y02T10/47 , B01J2523/3706 , B01J2523/3712 , B01J2523/3718 , B01J2523/48
摘要： An apparatus for purification of exhaust gas comprises: an exhaust gas pipe (2) connected to an internal combustion engine (1); an upstream catalyst (3) arranged at the upstream side of an exhaust gas passage inside the exhaust gas pipe (2); a downstream catalyst (4) which is arranged at the downstream side of the exhaust gas passage inside the exhaust gas pipe (2), and on which nickel and/or iron is supported; and oxidizing gas supply means (5) which is connected to the exhaust gas pipe (2) between the upstream catalyst (3) and the downstream catalyst (4), and which supplies oxidizing gas into the exhaust gas pipe (2).
摘要翻译：废气净化装置包括：与内燃机（1）连接的排气管（2）; 上游催化剂（3），其布置在所述排气管（2）内的废气通道的上游侧; 下游催化剂（4），其布置在排气管（2）内的排气通道的下游侧，并且其上支撑有镍和/或铁; 以及与上游催化剂（3）和下游催化剂（4）之间的排气管（2）连接并将氧化气体供给到排气管（2）中的氧化气体供给装置（5）。

7. 发明申请

US20110014101A1 CATALYST FOR PURIFICATION OF EXHAUST GAS, AND APPARATUS AND METHOD FOR PURIFICATION OF EXHAUST GAS USING THE CATALYST 有权
标题翻译：用于净化排气的催化剂，以及使用催化剂净化排气的装置和方法
公开(公告)号：US20110014101A1
公开(公告)日：2011-01-20
申请号：US12599057
申请日：2008-05-08
申请人： Tadashi Suzuki , Satoru Kato , Naoki Takahashi , Takaaki Kanazawa , Masanori Yamato , Kazuhiro Yoshimoto , Michihiko Takeuchi , Yuuji Matsuhisa
发明人： Tadashi Suzuki , Satoru Kato , Naoki Takahashi , Takaaki Kanazawa , Masanori Yamato , Kazuhiro Yoshimoto , Michihiko Takeuchi , Yuuji Matsuhisa
IPC分类号： B01D53/94 , B01J23/40 , B01J23/48 , B01J27/14 , B01J27/185 , B01J23/652 , B01J23/68 , B01J23/89 , B01J21/06 , B01D53/52
CPC分类号： B01D53/9445 , B01D2255/20707 , B01D2255/20738 , B01D2255/20769 , B01D2255/20776 , B01D2255/9207 , B01D2257/304 , B01D2257/404 , B01D2257/502 , B01D2257/702 , B01J21/04 , B01J23/40 , B01J23/42 , B01J23/58 , B01J23/63 , B01J23/6525 , B01J23/6527 , B01J23/8906 , B01J35/002 , B01J35/04 , B01J35/1009 , B01J35/1014 , B01J35/1019 , B01J37/0205 , B01J37/0207 , B01J37/0242 , B01J37/08 , B01J37/28 , F01N2570/24 , Y02T10/22
摘要： A catalyst for purification of exhaust gas, in which a noble metal is supported on a metal oxide support, has a basic site content of 1 mmol/L-cat or less, as determined on the basis of an amount of CO2 desorbed per liter of the catalyst as measured by a CO2 temperature-programmed desorption method.
摘要翻译：用于净化贵金属负载在金属氧化物载体上的废气的催化剂的碱性位置含量为1mmol / L-cat以下，其基于每升脱附的二氧化碳的量催化剂通过CO 2温度程序解吸法测量。

8. 发明申请

US20110237428A1 EXHAUST GAS-PURIFYING CATALYST 审中-公开
标题翻译：排气净化催化剂
公开(公告)号：US20110237428A1
公开(公告)日：2011-09-29
申请号：US13153351
申请日：2011-06-03
申请人： Minoru ITOU , Michihiko Takeuchi , Takaaki Kanazawa , Masaya Kamada , Tadashi Suzuki , Satoru Katoh , Naoki Takahashi
发明人： Minoru ITOU , Michihiko Takeuchi , Takaaki Kanazawa , Masaya Kamada , Tadashi Suzuki , Satoru Katoh , Naoki Takahashi
IPC分类号： B01J35/04 , B01J35/10 , B01J23/10 , B01J21/06 , B01J23/30 , B01J23/28 , B01J27/14 , B01J23/20
CPC分类号： F01N3/0807 , B01D53/9413 , B01D53/9472 , B01D53/9477 , B01D2255/1021 , B01D2255/1025 , B01D2255/2061 , B01D2255/2063 , B01D2255/2065 , B01D2255/20707 , B01D2255/20715 , B01D2255/20769 , B01D2255/20776 , B01D2255/30 , B01D2255/407 , B01D2255/908 , B01D2255/9207 , B01J23/63 , B01J23/6484 , B01J23/6525 , B01J23/6527 , B01J27/14 , B01J35/0006 , B01J35/04 , F01N3/0864 , F01N13/0097 , F01N2370/02 , F01N2510/0682 , Y02T10/20
摘要： The exhaust gas-purifying catalyst includes a substrate provided with one or more through-holes through which exhaust gas flows, and a catalyst layer which is supported by the substrate and contains precious metals and an oxygen storage material. The exhaust gas-purifying catalyst contains a first part to which the exhaust gas is supplied, and a second part to which the exhaust gas having passed through the first part is supplied and is smaller in the content of the oxygen storage material per unit volume than that of the first part.
摘要翻译：废气净化用催化剂具备：设置有排气流过的一个以上通气孔的基板和由该基板支撑并含有贵金属和储氧材料的催化剂层。排气净化催化剂含有供给废气的第一部分，并且供给通过第一部分的废气的第二部分，并且每单位体积的储氧材料的含量小于第一部分。

9. 发明申请

US20150080211A1 IRON OXIDE-ZIRCONIA COMPOSITE OXIDE AND METHOD FOR PRODUCING SAME, AND EXHAUST GAS PURIFICATION CATALYST 有权
标题翻译：氧化铁 - 氧化锆氧化物及其制造方法和排气净化催化剂
公开(公告)号：US20150080211A1
公开(公告)日：2015-03-19
申请号：US14384283
申请日：2013-04-26
申请人： Masahide Miura , Atsushi Tanaka , Takahiro Suzuki , Tadashi Suzuki , Toshitaka Tanabe , Naoki Takahashi
发明人： Masahide Miura , Atsushi Tanaka , Takahiro Suzuki , Tadashi Suzuki , Toshitaka Tanabe , Naoki Takahashi
IPC分类号： B01J23/89 , B01J23/83 , B01J23/745
CPC分类号： B01J23/894 , B01J21/066 , B01J23/10 , B01J23/745 , B01J23/83 , B01J35/0006 , B01J35/002 , B01J37/0248 , B01J37/03 , C01G25/00 , C01G49/0018 , C01G49/0054 , C01P2002/72 , C01P2004/03 , C01P2004/32 , C01P2004/45 , C01P2004/61 , C01P2006/12
摘要： A composite oxide with a high oxygen storage capacity is provided without using cerium. The composite oxide is an iron oxide-zirconia composite oxide containing iron, zirconium, and a rare-earth element. The total content of Fe2O3, ZrO2, and an oxide of the rare-earth element is not less than 90 mass %, the content of an iron oxide in terms of Fe2O3 is 10 to 90 mass %, and the absolute value of the covariance COV(Fe, Zr+X) of the composite oxide, which has been baked in the atmosphere at a temperature of greater than or equal to 900° C. for 5 hours or more, determined by the following Formulae (1) to (3), is not greater than 20:  [ Math .  1 ]  R i  ( Fe ) = I i  ( Fe ) × 100 I i  ( Fe ) + I i  ( Zr ) + I i  ( X ) ( 1 )  R i  ( Zr + X ) = { I i  ( Zr ) + I i  ( X ) } × 100 I i  ( Fe ) + I i  ( Zr ) + I i  ( X ) ( 2 ) COV  ( Fe , Zr + X ) = 1 n  ∑ i = 1 n   [ { R i  ( Fe ) - R av  ( Fe ) } × { R i  ( Zr + X ) - R av  ( Zr + X ) } ] ( 3 ) (in the formula, Ii(Fe), Ii(Zr), and Ii(X) respectively represent the ratios of the X-ray intensities of iron, zirconium, and the rare-earth element measured at a measurement point i (where i=1 to n) to the 100% intensities of the respective elements as measured by subjecting the composite oxide to a ray analysis through EPMA (WDX: wavelength dispersive X-ray spectrometry), where Rav(Fe) and Rav(Zr+X) represent the mean values of Ri(Fe) and Ri(Zr+X), respectively, at all measurement points n).
摘要翻译：提供具有高储氧能力的复合氧化物，而不使用铈。复合氧化物是含有铁，锆和稀土元素的氧化铁 - 氧化锆复合氧化物。 Fe2O3，ZrO2和稀土类元素的氧化物的总含量为90质量％以上，Fe 2 O 3的氧化铁含量为10〜90质量％，协方差COV的绝对值（1）〜（3）确定的复合氧化物的（Fe，Zr + X），其在大气中在大于或等于900℃的温度下烘烤5小时以上，，不大于20：（Fe）= I（Fe）×100 I i（Fe）+ I（Zr）+ I（X）（1）R i（Zr + X ）（I）（X）（X）（2）COV（Fe，Zr + X））= 1 nΣi = 1 n[{R i（Fe）-R av（Fe）}×{R i（Zr + X）-R av（Zr + X）}] 3）（式中，Ii（Fe），Ii（Zr）和Ii（X）分别表示在测量点i测量的铁，锆和稀土元素的X射线强度的比例其中i = 1至n）相对于通过EPMA（WDX：波长色散X射线光谱法）对复合氧化物进行射线分析测量的各元素的100％强度，其中Rav（Fe）和Rav（Zr + X）分别表示在所有测量点n处的Ri（Fe）和Ri（Zr + X）的平均值。

10. 发明授权

US08927454B2 Exhaust gas-purifying catalyst 有权
标题翻译：废气净化催化剂
公开(公告)号：US08927454B2
公开(公告)日：2015-01-06
申请号：US13282803
申请日：2011-10-27
申请人： Minoru Itou , Michihiko Takeuchi , Tetsuya Shinozaki , Takaaki Kanazawa , Masaya Kamada , Tadashi Suzuki , Satoru Katoh , Naoki Takahashi
发明人： Minoru Itou , Michihiko Takeuchi , Tetsuya Shinozaki , Takaaki Kanazawa , Masaya Kamada , Tadashi Suzuki , Satoru Katoh , Naoki Takahashi
IPC分类号： B01J23/00 , B01J23/02 , B01J23/08 , B01J23/40 , B01J23/42 , B01J23/44 , B01J23/56 , B01J21/00 , B01J21/04 , B01J20/00 , F01N3/28 , B01D53/94 , B01J23/63 , B01J35/00 , B01J35/04 , B01J37/02
CPC分类号： F01N3/2828 , B01D53/9413 , B01D53/9472 , B01D2255/1021 , B01D2255/1023 , B01D2255/1025 , B01D2255/2065 , B01D2255/20715 , B01D2255/2092 , B01D2255/407 , B01D2255/902 , B01D2255/908 , B01J23/63 , B01J35/0006 , B01J35/04 , B01J37/0244 , F01N2550/02 , Y10S502/52712 , Y10S502/52713 , Y10S502/52719
摘要： An exhaust gas-purifying catalyst includes a support provided with one or more through-holes through which exhaust gas flows, and a catalytic layer supported by the support and containing an oxygen storage material. The exhaust gas-purifying catalyst includes a first section to which the exhaust gas is supplied, and a second section to which the exhaust gas having passed through the first section is supplied. The catalytic layer includes a layered structure of a first catalytic layer containing platinum and/or palladium and a second catalytic layer containing rhodium in the first catalytic section and further includes a third layer containing rhodium in the second section. The second section is smaller in oxygen storage material content per unit volumetric capacity than the first section.
摘要翻译：废气净化催化剂包括具有排气流过的一个或多个通孔的载体和由载体支撑并含有储氧材料的催化剂层。废气净化催化剂包括供给废气的第一部分和供给通过第一部分的废气的第二部分。催化层包括在第一催化部分中含有铂和/或钯的第一催化剂层和含有铑的第二催化剂层并且还包括在第二部分中含有铑的第三层的层状结构。第二部分比第一部分的每单位体积容量的储氧材料含量较小。

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