公开(公告)号：US20180290128A1

公开(公告)日：2018-10-11

申请号：US15765225

申请日：2016-09-30

Applicant: CLEAN DIESEL TECHNOLOGIES, INC.

Inventor： Zahra Nazarpoor ,  Stephen J. Golden

IPC: B01J23/83 ,  B01J6/00

Abstract: Zero-PGM (ZPGM) catalyst materials including pseudo-brookite compositions for use in diesel oxidation catalyst (DOC) applications are disclosed. The disclosed doped pseudo-brookite compositions include A-site partially doped pseudo-brookite compositions, such as, Sr-doped and Ce-doped pseudo-brookite compositions, as well as B-site partially doped pseudo-brookite compositions, such as, Fe-doped, Co-doped Ni-doped, and Ti-doped pseudo-brookite compositions. The disclosed doped pseudo-brookite compositions, including calcination at various temperatures, are subjected to a DOC standard light-off (LO) test methodology to assess/verify catalyst activity as well as to determine the effect of the use of a dopant in an A-site cation or a B-site cation within a pseudo-brookite composition. The disclosed doped pseudo-brookite compositions exhibit higher NO oxidation catalyst activities when compared to bulk powder pseudo-brookite, thereby indicating improved thermal stability and catalyst activity when using a dopant in an A-site cation or in a B-site cation within a pseudo-brookite composition.

公开(公告)号：US20170326533A1

公开(公告)日：2017-11-16

申请号：US15499087

申请日：2017-04-27

Applicant: Clean Diesel Technologies, Inc.

Inventor： Zahra Nazarpoor ,  Stephen J. Golden

IPC: B01J23/889 ,  B01J37/02 ,  B01J37/08 ,  C01G49/00 ,  B01D53/94 ,  B01J23/00 ,  F01N3/10 ,  B01J21/04 ,  B01J21/06 ,  B01J35/00 ,  B01J23/75 ,  C01G51/00

CPC classification number: B01J23/8892 ,  B01D53/945 ,  B01D2255/20715 ,  B01D2255/2073 ,  B01D2255/20738 ,  B01D2255/20746 ,  B01D2255/20761 ,  B01D2255/2092 ,  B01D2255/405 ,  B01D2255/65 ,  B01D2255/9025 ,  B01D2255/9027 ,  B01D2255/908 ,  B01J21/04 ,  B01J21/066 ,  B01J23/005 ,  B01J23/10 ,  B01J23/685 ,  B01J23/688 ,  B01J23/75 ,  B01J23/78 ,  B01J23/825 ,  B01J23/83 ,  B01J23/8474 ,  B01J23/85 ,  B01J23/8906 ,  B01J23/8913 ,  B01J23/892 ,  B01J35/0006 ,  B01J37/0242 ,  B01J37/0244 ,  B01J37/038 ,  B01J2523/00 ,  C01G49/0072 ,  C01G51/40 ,  C01P2002/32 ,  F01N3/101 ,  F01N2370/02 ,  F01N2510/0684 ,  Y02T10/22 ,  B01J2523/31 ,  B01J2523/48 ,  B01J2523/842 ,  B01J2523/845 ,  B01J2523/72

Abstract: Zero-Rare Earth Metal (ZREM) and Zero-platinum group metals (ZPGM) compositions of varied binary spinel oxides are disclosed as oxygen storage material (OSM) to be used within TWC systems. The ZREM-ZPGM OSM systems comprise binary non-Cu spinel oxides of Co—Fe, Fe—Mn, Co—Mn, or Mn—Fe. The oxygen storage capacity (OSC) property associated with the non-Cu ZREM-ZPGM OSM systems is determined employing isothermal OSC oscillating condition testing. Further, the OSC test results compare the OSC properties of a ZREM-ZPGM reference OSM system including a Cu—Mn binary spinel oxide and PGM reference catalysts including Ce-based OSMs. The non-Cu spinel oxides ZREM-ZPGM OSM systems exhibit significantly improved OSC properties, which are greater than the OSC property of the Ce-based OSM PGM reference systems.

公开(公告)号：US09604175B2

公开(公告)日：2017-03-28

申请号：US14732499

申请日：2015-06-05

Applicant: Clean Diesel Technologies, Inc.

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

IPC: B01D50/00 ,  B01D53/94 ,  B01J23/00 ,  B01J23/89 ,  B01J35/04 ,  B01J21/04 ,  B01J23/10 ,  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: The present disclosure describes zoned three way catalyst (TWC) systems including Rhodium-iron overcoat layers and Nb—Zr—Al Oxide overcoat layers. Disclosed herein are TWC sample systems that are configured to include a substrate and one or more of a washcoat layer, an impregnation layer, and/or an overcoat layer. In catalyst systems disclosed herein, closed-coupled catalysts include a first catalyst zone with an overcoat layer formed using a slurry that includes an oxide mixture and an Oxygen Storage Material (OSM). In catalyst systems disclosed herein, oxide mixtures include niobium oxide (Nb2O5), zirconia, and alumina. Further, catalyst systems disclosed herein include a second catalyst zone with an overcoat layer formed to include a rhodium-iron catalyst. Yet further, catalyst systems disclosed herein include impregnation layers that include one or more of Palladium, Barium, Cerium, Neodymium, and Rhodium.

公开(公告)号：US09468912B2

公开(公告)日：2016-10-18

申请号：US14543448

申请日：2014-11-17

Applicant: Clean Diesel Technologies, Inc.

Inventor： Zahra Nazarpoor ,  Oguzhan Selim Yaglidere ,  Stephen J. Golden

IPC: B01J23/889 ,  B01J23/10 ,  B01J23/00 ,  B01D53/94

CPC classification number: B01J23/8892 ,  B01D53/945 ,  B01D2255/2066 ,  B01D2255/207 ,  B01D2255/20715 ,  B01D2255/2073 ,  B01D2255/20746 ,  B01D2255/20761 ,  B01D2255/40 ,  B01D2255/405 ,  B01D2255/908 ,  B01J23/005 ,  B01J23/10 ,  B01J37/035 ,  B01J2523/00 ,  Y02T10/22 ,  B01J2523/17 ,  B01J2523/72 ,  B01J2523/845 ,  B01J2523/3718 ,  B01J2523/48 ,  B01J2523/56

Abstract: Variations of ZPGM bulk powder catalyst materials, including Cu—Co—Mn ternary spinel systems for TWC applications are disclosed. Bulk powder catalyst samples are prepared employing a plurality of molar ratio variations, including disclosed Cu—Co—Mn spinel on Praseodymium-Zirconia support oxide made by incipient wetness method, or Cu—Co—Mn spinel on Niobium-Zirconia support oxide, which may be synthesized by co-precipitation method. A plurality of bulk powder catalyst samples may be tested by performing isothermal steady state sweep test, employing a flow reactor at inlet temperature of about 450° C., and testing a gas stream from lean to rich condition and influence on TWC performance measured/analyzed, which may lead into significant improvements in the manufacturing of ZPGM bulk powder catalyst materials for TWC applications.

Abstract translation: 公开了ZPGM散装粉末催化剂材料的变化，包括用于TWC应用的Cu-Co-Mn三元尖晶石系统。 使用多个摩尔比变化制备散装粉末催化剂样品，包括在初始润湿方法制备的镨 - 氧化锆载体氧化物上公开的Cu-Co-Mn尖晶石或在铌 - 氧化锆载体氧化物上的Cu-Co-Mn尖晶石， 通过共沉淀法合成。 可以通过进行等温稳态扫描试验来测试多个散装粉末催化剂样品，使用流入反应器，入口温度为约450℃，并测试从贫到富状态的气流，并测量/分析对TWC性能的影响 ，这可能导致用于TWC应用的ZPGM散装粉末催化剂材料的制造的显着改进。

公开(公告)号：US20150352532A1

公开(公告)日：2015-12-10

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: B01J23/89 ,  B01J35/04 ,  B01J23/00 ,  B01J23/63 ,  B01J21/04 ,  B01J27/232 ,  B01J23/20 ,  B01J35/00 ,  B01J23/10

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：US10253669B2

公开(公告)日：2019-04-09

申请号：US15586823

申请日：2017-05-04

Applicant: Clean Diesel Technologies, Inc.

Inventor： Zahra Nazarpoor ,  Stephen J. Golden ,  Maxime Launois

IPC: F01N3/00 ,  F01N3/10 ,  B01J23/00 ,  B01D53/94 ,  F01N13/00 ,  B01J37/02 ,  B01J23/889 ,  B01J23/89 ,  B01J35/00

Abstract: Synergized platinum group metals (SPGM) with ultra-low PGM loadings employed as underfloor (UF) three-way catalyst (TWC) systems with varied material compositions and configurations are disclosed. SPGM UF catalysts in which ZPGM compositions of binary and ternary spinel structures supported onto support oxides are coupled with commercialized PGM close-coupled (CC) catalysts and tested under Federal Test Procedure FTP-75 within TGDI and PI engines. The performance of the TWC systems including commercialized PGM CC and SPGM UF (with ultra-low PGM loadings) catalysts is compared to the performance of commercialized PGM CC and PGM UF catalysts. The disclosed TWC systems indicate that SPGM UF TWC catalytic performance is comparable or even exceeds high PGM-based conventional TWC catalysts, with reduced tailpipe emissions.

公开(公告)号：US20160361711A1

公开(公告)日：2016-12-15

申请号：US15182330

申请日：2016-06-14

Applicant: Clean Diesel Technologies, Inc.

Inventor： Zahra Nazarpoor ,  Stephen J. Golden

IPC: B01J23/889 ,  B01D53/94 ,  B01J35/02 ,  C01G45/12 ,  B01J23/00

CPC classification number: B01J23/8892 ,  B01D53/945 ,  B01D2255/2073 ,  B01D2255/20761 ,  B01D2255/405 ,  B01D2255/65 ,  B01D2255/908 ,  B01J23/005 ,  C01G3/02 ,  C01G45/02 ,  C01G45/1221 ,  C01G45/1235 ,  C01P2002/72 ,  C01P2002/85 ,  C01P2004/04 ,  Y02C20/10 ,  Y02T10/22

Abstract: The present disclosure describes zero-platinum group metals (ZPGM) material compositions including binary Cu—Mn spinel oxide powders having stable reduction/oxidation (redox) reversibility useful for TWC and oxygen storage material applications. The behavior of Cu—Mn spinel oxide powder is analyzed under oxidation-reduction environments to determine redox reversibility, catalytic activity, and spinel structure stability. Characterization of spinel powder is performed employing X-ray diffraction analysis, hydrogen temperature-programmed reduction technique, transmission electron microscopy analysis, and X-ray photoelectron spectroscopy analysis. Test results confirm the phase and structural stability of the Cu—Mn spinel oxide during redox reaction, thereby indicating that the Cu—Mn spinel oxide can be employed in a plurality of TWC applications.

Abstract translation: 本公开描述了包含用于TWC和储氧材料应用的具有稳定的还原/氧化（氧化还原）可逆性的二元Cu-Mn尖晶石氧化物粉末的零铂族金属（ZPGM）材料组合物。 在氧化还原环境下分析Cu-Mn尖晶石氧化物粉末的行为，以确定氧化还原可逆性，催化活性和尖晶石结构稳定性。 使用X射线衍射分析，氢气温度程序化还原技术，透射电子显微镜分析和X射线光电子能谱分析进行尖晶石粉末的表征。 测试结果证实氧化还原反应期间Cu-Mn尖晶石氧化物的相和结构稳定性，从而表明Cu-Mn尖晶石氧化物可用于多个TWC应用中。

公开(公告)号：US20160263561A1

公开(公告)日：2016-09-15

申请号：US14657833

申请日：2015-03-13

Applicant: Clean Diesel Technologies, Inc.

Inventor： Zahra Nazarpoor ,  Stephen J. Golden

IPC: B01J23/83 ,  B01J35/02 ,  B01J23/00

CPC classification number: B01J23/83 ,  B01D53/945 ,  B01D2255/2065 ,  B01D2255/20715 ,  B01D2255/20746 ,  B01D2255/20761 ,  B01D2255/405 ,  B01D2255/9207 ,  B01J23/005 ,  B01J23/894 ,  B01J35/02 ,  Y02T10/22

Abstract: Variations of ZPGM catalyst material compositions including cerium-cobalt spinel oxide systems for ZPGM DOC applications are disclosed. The disclosed ZPGM catalyst compositions include CexCo3−xO4 spinel and effect of adding copper to Ce-Co as CuxCe1−xCo2O4 spinel systems supported on doped zirconia support oxide, which are produced by the incipient wetness (IW) methodology. ZPGM catalyst compositions are subjected to BET-surface area and XRD analyses to determine the thermal stability and spinel phase formation of supported spinal systems, respectively. DOC performance of ZPGM catalyst compositions is determined under steady state DOC light off test condition to verify/compare oxidation activity of disclosed spinel compositions, desirable and suitable for ZPGM catalyst materials in DOC applications.

Abstract translation: 公开了ZPGM催化剂材料组合物的变化，包括用于ZPGM DOC应用的铈 - 钴尖晶石氧化物体系。 所公开的ZPGM催化剂组合物包括CexCo3-xO4尖晶石以及以Ce-Co作为CuxCe1-xCo2O4尖晶石系统添加铜的作用，其由掺杂的氧化锆载体氧化物负载，其由初始湿度（IW）方法制备。 对ZPGM催化剂组合物进行BET表面积和XRD分析，分别确定支撑脊柱系统的热稳定性和尖晶石相形成。 在稳态DOC光离去试验条件下测定ZPGM催化剂组合物的DOC性能，以验证/比较所公开的尖晶石组合物的氧化活性，在DOC应用中是合适的并适用于ZPGM催化剂材料。

公开(公告)号：US09216384B2

公开(公告)日：2015-12-22

申请号：US14500387

申请日：2014-09-29

Applicant: Clean Diesel Technologies, Inc.

Inventor： Zahra Nazarpoor ,  Stephen J. Golden

IPC: B01D53/86 ,  B01D53/94 ,  B01D53/56 ,  B01D53/62 ,  B01D53/72 ,  B01J23/00 ,  B01J23/34 ,  B01J23/72 ,  B01J37/02 ,  B01J23/89

CPC classification number: B01D53/9463 ,  B01D53/565 ,  B01D53/62 ,  B01D53/72 ,  B01D53/865 ,  B01D53/945 ,  B01D2255/1021 ,  B01D2255/1025 ,  B01D2255/20715 ,  B01D2255/2073 ,  B01D2255/20761 ,  B01D2255/405 ,  B01D2255/908 ,  B01J23/005 ,  B01J23/34 ,  B01J23/72 ,  B01J23/898 ,  B01J37/0244 ,  B01J2523/00 ,  Y02T10/22 ,  B01J2523/17 ,  B01J2523/48 ,  B01J2523/56 ,  B01J2523/72

Abstract: Synergized Platinum Group Metals (SPGM) catalyst system for TWC application is disclosed. Disclosed SPGM catalyst system may include a washcoat with a Cu—Mn spinel structure and an overcoat that includes PGM supported on carrier material oxides, such as alumina. SPGM catalyst system shows significant improvement in nitrogen oxide reduction performance under stoichiometric operating conditions and especially under lean operating conditions, which allows a reduced consumption of fuel. Additionally, disclosed SPGM catalyst system also enhances the reduction of carbon monoxide and hydrocarbon within catalytic converters. Furthermore, disclosed SPGM catalyst systems are found to have enhanced catalyst activity compared to commercial PGM catalyst system, showing that there is a synergistic effect among PGM catalyst and Cu—Mn spinel within the disclosed SPGM catalyst system.

Abstract translation: 公开了用于TWC应用的协同铂族金属（SPGM）催化剂体系。 公开的SPGM催化剂体系可以包括具有Cu-Mn尖晶石结构的修补基面涂层和包含负载在载体材料氧化物如氧化铝上的PGM的外涂层。 SPGM催化剂体系在化学计量操作条件下，特别是在稀薄的操作条件下显示出氮氧化物还原性能的显着改善，这允许减少燃料消耗。 另外，所公开的SPGM催化剂体系还增强了催化转化器中一氧化碳和碳氢化合物的还原。 此外，发现所公开的SPGM催化剂体系与商业PGM催化剂体系相比具有增强的催化剂活性，表明在所公开的SPGM催化剂体系内PGM催化剂和Cu-Mn尖晶石之间具有协同效应。

公开(公告)号：US20150352531A1

公开(公告)日：2015-12-10

申请号：US14732307

申请日：2015-06-05

Applicant: Clean Diesel Technologies, Inc.

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

IPC: B01J23/89 ,  B01J35/04 ,  B01J23/00

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: The present disclosure describes rhodium iron catalysts of use in catalyst systems. Disclosed here are TWCs configured to include a substrate and one or more of a washcoat layer, an impregnation layer, and/or an overcoat layer. Disclosed herein are one or more of a washcoat layer and/or an overcoat layer formed using a slurry that includes one or more of an oxygen storage material, a refractory support oxide, iron, and rhodium. Disclosed herein are methods of preparing catalysts wherein a washcoat layer is deposited onto the substrate, one or more impregnation layers may be deposited onto the washcoat layer, one or more overcoat layers may be deposited onto the impregnation washcoat layer, and one or more additional impregnation layers may be deposited onto the one or more washcoat layers.

Abstract translation: 本公开描述了用于催化剂体系的铑铁催化剂。 这里公开的是被配置为包括基底和一个或多个修补基面涂层，浸渍层和/或外涂层的TWC。 本文公开了使用包含储氧材料，耐火载体氧化物，铁和铑中的一种或多种的浆料形成的修补基面涂层和/或外涂层中的一种或多种。 本文公开了制备催化剂的方法，其中将修补基面涂层沉积在基材上，一个或多个浸渍层可以沉积在修补基面涂层上，一个或多个外涂层可以沉积在浸渍涂层上，并且一个或多个另外的浸渍 层可以沉积在一个或多个修补基面涂层上。