公开(公告)号：US09579604B2

公开(公告)日：2017-02-28

申请号：US14732523

申请日：2015-06-05

Applicant: Clean Diesel Technologies, Inc.

Inventor： Randal L. Hatfield ,  Stephen J. Golden ,  Johnny T. Ngo

IPC: B01J23/00 ,  B01J23/02 ,  B01J23/08 ,  B01J23/10 ,  B01J23/40 ,  B01J23/42 ,  B01J23/70 ,  B01J23/74 ,  B01J21/04 ,  B01D53/94 ,  B01J23/89 ,  B01J35/04 ,  B01J23/20 ,  B01J23/63 ,  B01J27/232 ,  B01J35/00

CPC classification number: B01D53/9472 ,  B01D53/945 ,  B01D53/9454 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/2042 ,  B01D2255/2061 ,  B01D2255/2063 ,  B01D2255/2065 ,  B01D2255/2066 ,  B01D2255/2068 ,  B01D2255/207 ,  B01D2255/20715 ,  B01D2255/20738 ,  B01D2255/209 ,  B01D2255/2092 ,  B01D2255/40 ,  B01D2255/902 ,  B01D2255/908 ,  B01J21/04 ,  B01J23/002 ,  B01J23/10 ,  B01J23/20 ,  B01J23/63 ,  B01J23/83 ,  B01J23/8906 ,  B01J23/894 ,  B01J27/232 ,  B01J35/0006 ,  B01J35/04 ,  B01J37/0244 ,  B01J2523/00 ,  Y02A50/2324 ,  Y02T10/22

Abstract: Close-coupled catalysts (CCC) for TWC applications are disclosed. The novel CCCs are implemented using light-weighted ceramic substrates in which a thin coating employing a low loading of Iron (Fe)-activated Rhodium (Rh) material composition, with Iron loadings and an OSM of Ceria-Zirconia, are deposited onto the substrates. Different CCC samples are produced to determine and/or verify improved light-off (LO) and NOX conversion of the CCCs. Other CCC samples produced are a CCC including a standard (non-activated) Rh thin coating and a heavily loaded CCC with a single coating of Pd/Rh material composition. The CCC samples are aged under dyno-aging using the multi-mode aging cycle and their performance tested using a car engine with ports on the exhaust to measure the emissions, according to the testing protocol in the Environmental Protection Agency Federal Test Procedure 75. During testing, the thin coatings of Fe-activated Rh exhibit improved light-off and NOx conversion efficiency.

Abstract translation: 公开了用于TWC应用的紧密耦合催化剂（CCC）。 新型CCC使用轻质陶瓷衬底实现，其中使用低负载的铁（Fe）活化的铑（Rh）材料组合物的铁载体和氧化铈 - 氧化锆的OSM沉积到衬底上 。 产生不同的CCC样品以确定和/或验证CCC的改进的熄灭（LO）和NOX转化。 生产的其他CCC样品是CCC，包括标准（非活化）Rh薄涂层和具有单层Pd / Rh材料组成的重负载CCC。 根据环境保护局联邦测试程序75中的测试方案，CCC样品使用多模式老化循环进行老化，其性能使用具有排气端口的汽车发动机进行测试，以测量排放。 Fe-活化的Rh的薄涂层具有改善的关闭和NOx转化效率。

公开(公告)号：US09511355B2

公开(公告)日：2016-12-06

申请号：US14090861

申请日：2013-11-26

Applicant: CLEAN DIESEL TECHNOLOGIES, INC.

Inventor： Zahra Nazarpoor ,  Stephen J. Golden

IPC: B01J23/89 ,  B01D53/94 ,  B01J23/00 ,  B01J23/889 ,  B01J37/02 ,  B01J37/03

CPC classification number: B01J23/8986 ,  B01D53/945 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/20715 ,  B01D2255/2073 ,  B01D2255/20761 ,  B01D2255/405 ,  B01D2255/9022 ,  B01D2255/908 ,  B01D2258/012 ,  B01J23/005 ,  B01J23/8892 ,  B01J37/0244 ,  B01J37/035 ,  B01J37/038 ,  B01J2523/00 ,  Y02T10/22 ,  B01J2523/17 ,  B01J2523/48 ,  B01J2523/56 ,  B01J2523/72 ,  B01J2523/31 ,  B01J2523/824

Abstract: Synergies resulting from combinations of catalyst systems including Copper-Manganese material compositions and PGM catalysts are disclosed. Variations of catalyst system configurations are tested to determine most effective material composition, formulation, and configuration for an optimal synergized PGM (SPGM) catalyst system. The synergistic effect of the selected SPGM catalyst system is determined under steady state and oscillating test conditions, from which the optimal NO/CO cross over R-value indicates enhanced catalytic behavior of the selected SPGM catalyst system as compared with current PGM catalysts for TWC applications. According to principles in the present disclosure, application of Pd on alumina-based support as overcoat and Cu—Mn spinel structure supported on Nb2O5—ZrO2 as washcoat on suitable ceramic substrate, produce higher catalytic activity, efficiency, and better performance in TWC condition, especially under lean condition, than commercial PGM catalysts.

Abstract translation: 公开了由包括铜 - 锰材料组合物和PGM催化剂的催化剂体系的组合产生的协同作用。 测试催化剂体系配置的变化，以确定最佳协同PGM（SPGM）催化剂体系的最有效的材料组成，配方和配置。 所选择的SPGM催化剂体系的协同效应是在稳定状态和振荡试验条件下测定的，与当前用于TWC应用的PGM催化剂相比，最优NO / CO交叉R值表明所选SPGM催化剂体系的催化行为增强 。 根据本公开的原理，在合适的陶瓷衬底上，作为外涂层和负载在Nb 2 O 5 -ZrO 2上的Cu-Mn尖晶石结构的氧化铝基载体上施加Pd作为修补基面涂层，在TWC条件下产生更高的催化活性，效率和更好的性能， 特别是在贫血条件下，比商业PGM催化剂。

公开(公告)号：US09475005B2

公开(公告)日：2016-10-25

申请号：US14732473

申请日：2015-06-05

Applicant: Clean Diesel Technologies, Inc.

Inventor： Randal L. Hatfield ,  Edward J. Lee ,  Johnny T. Ngo ,  Stephen J. Golden

IPC: B01J27/25 ,  B01J23/00 ,  B01J23/02 ,  B01J23/10 ,  B01J23/40 ,  B01J23/42 ,  B01J23/44 ,  B01J23/56 ,  B01J23/58 ,  B01J23/70 ,  B01J23/74 ,  B01J21/04 ,  B01D53/94 ,  B01J23/89 ,  B01J35/04 ,  B01J23/20 ,  B01J23/63 ,  B01J27/232 ,  B01J35/00

CPC classification number: B01D53/9472 ,  B01D53/945 ,  B01D53/9454 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/2042 ,  B01D2255/2061 ,  B01D2255/2063 ,  B01D2255/2065 ,  B01D2255/2066 ,  B01D2255/2068 ,  B01D2255/207 ,  B01D2255/20715 ,  B01D2255/20738 ,  B01D2255/209 ,  B01D2255/2092 ,  B01D2255/40 ,  B01D2255/902 ,  B01D2255/908 ,  B01J21/04 ,  B01J23/002 ,  B01J23/10 ,  B01J23/20 ,  B01J23/63 ,  B01J23/83 ,  B01J23/8906 ,  B01J23/894 ,  B01J27/232 ,  B01J35/0006 ,  B01J35/04 ,  B01J37/0244 ,  B01J2523/00 ,  Y02A50/2324 ,  Y02T10/22

Abstract: Three way catalysts (TWCs) for catalyst systems are disclosed. The disclosed TWC systems include Iron (Fe)-activated Rhodium (Rh) and Barium (Ba)-Palladium (Pd) layers capable of interacting with conventional and/or non-conventional catalyst supports and additives. Variations of TWC system samples are produced including Fe-activated Rh layers deposited onto a washcoat (WC) layer having one or more of an oxygen storage material (OSM). Other TWC system samples are produced including an impregnation (IMPG) layer having loading variations of Ba within a Pd, Ce, and Nd applied onto an OSM WC layer, and a further overcoat layer including Fe-activated Rh is applied onto the IMPG layer. The catalytic performance of disclosed TWC catalysts is evaluated by performing a series of light-off tests, wide pulse perturbation tests, and standard isothermal oxygen storage capacity oscillating tests. Disclosed TWC catalysts exhibit high catalytic performance and significant oxygen storage capacity.

Abstract translation: 公开了用于催化剂体系的三元催化剂（TWC）。 所公开的TWC系统包括能够与常规和/或非常规催化剂载体和添加剂相互作用的铁（Fe）活化的铑（Rh）和钡（Ba） - 钯（Pd）层。 产生TWC系统样品的变化，包括沉积在具有一种或多种储氧材料（OSM）的修补基面涂层（WC）层上的Fe活化的Rh层。 生产其他TWC系统样品，其包括在施加到OSM WC层上的Pd，Ce和Nd中具有Ba负载变化的浸渍（IMPG）层，并且将包含Fe活化的Rh的另外的外涂层施加到IMPG层上。 所公开的TWC催化剂的催化性能通过进行一系列的灭灯试验，宽脉冲扰动试验和标准等温储氧容量振荡试验进行评估。 公开的TWC催化剂表现出高催化性能和显着的储氧能力。

公开(公告)号：US20160263526A1

公开(公告)日：2016-09-15

申请号：US14657842

申请日：2015-03-13

Applicant: Clean Diesel Technologies, Inc.

Inventor： Stephen J. Golden

IPC: B01D53/94 ,  B01J23/00 ,  B01J23/89

CPC classification number: B01D53/945 ,  B01D53/9477 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/2073 ,  B01D2255/20761 ,  B01D2255/405 ,  B01D2258/014 ,  B01J23/005 ,  B01J23/34 ,  B01J23/464 ,  B01J23/72 ,  B01J23/8892 ,  B01J23/8986 ,  B01J35/0006 ,  F01N3/101 ,  F01N13/009 ,  F01N13/0097 ,  Y02T10/22

Abstract: Synergized PGM catalyst converters configured as three-way catalyst (TWC) systems are disclosed. The disclosed SPGM system configurations exhibit high thermal stability, attenuated air to fuel (A/F) perturbations, enhanced TWC activity, and high catalytic conversion efficiency as a result of synergizing a low PGM loading close-coupled catalyst (CCC), with Ce-based oxygen storage, with a front spinel zone of suitable mixed metal oxide compositions acting as pre-catalyst for oxygen storage. The attenuation of A/F perturbations to lower amplitude, before exhaust gas emissions go into the standard PGM CCC, allows the system to work within a range of R values very close to the stoichiometric point for both lean and rich conditions, and high catalytic conversion efficiency in NOX, CO, and HC conversions. The disclosed SPGM system configurations can be utilized in a plurality of TWC applications, such as conventional TWC systems including an optional underfloor catalyst.

Abstract translation: 公开了配置为三元催化剂（TWC）系统的协同PGM催化转化器。 所公开的SPGM系统配置表现出高热稳定性，减弱的空气燃料（A / F）扰动，增强的TWC活性和高催化转化效率，这是由于将低PGM负载紧密耦合催化剂（CCC）与Ce- 具有用作氧储存的预催化剂的合适的混合金属氧化物组合物的前尖晶石区。 在废气排放进入标准PGM CCC之前，A / F扰动对较低振幅的衰减使得系统在非常接近贫和富条件的化学计量点的R值范围内工作，并且具有高催化转化率 NOX，CO和HC转化效率。 所公开的SPGM系统配置可以用于多个TWC应用中，例如常规TWC系统，包括可选的地板下催化剂。

公开(公告)号：US20150148216A1

公开(公告)日：2015-05-28

申请号：US14503003

申请日：2014-09-30

Applicant: Clean Diesel Technologies, Inc.

Inventor： Zahra Nazarpoor ,  Stephen J. Golden

IPC: B01J29/068 ,  B01J23/63 ,  B01J23/62 ,  B01J23/56

CPC classification number: B01J29/068 ,  B01D53/944 ,  B01D53/945 ,  B01D2255/405 ,  B01J23/005 ,  B01J23/34 ,  B01J23/56 ,  B01J23/626 ,  B01J23/63 ,  B01J23/72 ,  B01J23/8933 ,  B01J23/8986 ,  B01J37/0244 ,  C01B3/40 ,  C01B13/0281 ,  C01B2203/0233 ,  C01B2203/1041 ,  C01B2203/1094 ,  C08K3/00 ,  C08K3/22 ,  H01M4/00 ,  Y02P20/52 ,  Y02T10/22 ,  C08L23/02

Abstract: Spinels having a general formula of AB2O4, where A and B are a transition metal but not the same transition metal are disclosed. Spinel and spinel compositions of the application are useful in various applications and methods as further described.

Abstract translation: 公开了具有通式AB 2 O 4的尖晶石，其中A和B是过渡金属，但不是相同的过渡金属。 应用的尖晶石和尖晶石组合物可用于进一步描述的各种应用和方法中。