公开(公告)号：US20150352494A1

公开(公告)日：2015-12-10

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: B01D53/94

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.

Abstract translation: 本公开描述了包括铑 - 铁外涂层和Nb-Zr-Al氧化物外涂层的分区三元催化剂（TWC）系统。 本文公开了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样品系统。 在本文公开的催化剂体系中，封闭偶联催化剂包括具有使用包含氧化物混合物和氧气存储材料（OSM）的浆料形成的外涂层的第一催化剂区域。 在本文公开的催化剂体系中，氧化物混合物包括氧化铌（Nb 2 O 5），氧化锆和氧化铝。 此外，本文公开的催化剂体系包括具有形成为包括铑 - 铁催化剂的外涂层的第二催化剂区域。 此外，本文公开的催化剂体系包括包含钯，钡，铈，钕和铑中的一种或多种的浸渍层。

公开(公告)号：US20150258496A1

公开(公告)日：2015-09-17

申请号：US14723688

申请日：2015-05-28

Applicant: Clean Diesel Technologies, Inc.

Inventor： Randal L. Hatfield ,  Stephen J. Golden

IPC: B01D53/94 ,  B01J21/04 ,  B01J23/46 ,  B01J23/20 ,  B01J23/10 ,  B01J35/00 ,  B01J23/889

CPC classification number: B01D53/9477 ,  B01D53/945 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/2065 ,  B01D2255/2066 ,  B01D2255/2068 ,  B01D2255/20715 ,  B01D2255/2073 ,  B01D2255/20761 ,  B01D2255/2092 ,  B01D2255/405 ,  B01D2255/9022 ,  B01D2255/908 ,  B01J23/005 ,  B01J23/40 ,  B01J23/8892 ,  B01J23/8986 ,  B01J35/0006 ,  B01J37/0244 ,  B01J2523/00 ,  Y02T10/22 ,  B01J2523/17 ,  B01J2523/48 ,  B01J2523/56 ,  B01J2523/72 ,  B01J2523/3718

Abstract: Hybrid PGM-ZPGM three-way catalyst (TWC) exhaust treatment systems are disclosed. The hybrid PGM-ZPGM TWC systems include a PGM close-coupled catalytic converter followed by an underfloor catalytic converter. The underfloor catalytic converter includes a ZPGM-based catalyst. Additionally, the underfloor catalytic converter can also be a PGM/ZPGM zone coated catalytic converter. The disclosed hybrid TWC systems comprising PGM-based and ZPGM-based catalysts can replace pure PGM-based exhaust treatment systems.

Abstract translation: 公开了混合PGM-ZPGM三元催化剂（TWC）排气处理系统。 混合PGM-ZPGM TWC系统包括PGM紧耦合催化转化器，随后是地板下催化转化器。 地板下催化转化器包括基于ZPGM的催化剂。 此外，地板下的催化转化器也可以是PGM / ZPGM区域涂层催化转化器。 公开的包含基于PGM和ZPGM的催化剂的混合TWC系统可以替代纯的基于PGM的废气处理系统。

公开(公告)号：US20170328250A1

公开(公告)日：2017-11-16

申请号：US15586847

申请日：2017-05-04

Applicant: Clean Diesel Technologies, Inc.

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

IPC: F01N3/10 ,  B01D53/94 ,  F01N13/00 ,  B01J23/42 ,  B01J23/46 ,  B01J23/755 ,  F01N3/08 ,  B01J23/00

CPC classification number: F01N3/101 ,  B01D53/945 ,  B01D53/9468 ,  B01D53/9477 ,  B01D2255/102 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/1026 ,  B01D2255/1028 ,  B01D2255/2022 ,  B01D2255/2027 ,  B01D2255/2042 ,  B01D2255/2045 ,  B01D2255/2047 ,  B01D2255/2063 ,  B01D2255/2065 ,  B01D2255/2066 ,  B01D2255/2068 ,  B01D2255/20707 ,  B01D2255/2073 ,  B01D2255/20738 ,  B01D2255/20746 ,  B01D2255/20753 ,  B01D2255/20761 ,  B01D2255/20784 ,  B01D2255/20792 ,  B01D2255/2092 ,  B01D2255/405 ,  B01D2255/65 ,  B01D2255/9022 ,  B01D2255/9025 ,  B01D2255/904 ,  B01D2257/404 ,  B01D2257/502 ,  B01D2257/702 ,  B01D2258/01 ,  B01J23/005 ,  B01J23/42 ,  B01J23/464 ,  B01J23/755 ,  F01N3/0864 ,  F01N13/0093 ,  F01N2370/02 ,  F01N2510/06 ,  Y02T10/22

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

公开(公告)号：US09731279B2

公开(公告)日：2017-08-15

申请号：US14528746

申请日：2014-10-30

Applicant: Clean Diesel Technologies, Inc.

Inventor： Zahra Nazarpoor ,  Anke Elizabeth Abken ,  Stephen J. Golden

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

CPC classification number: B01J23/8892 ,  B01D53/945 ,  B01D2255/20715 ,  B01D2255/2073 ,  B01D2255/20746 ,  B01D2255/20761 ,  B01D2255/2092 ,  B01D2255/405 ,  B01D2255/65 ,  B01J23/005 ,  B01J37/0242 ,  B01J37/0244 ,  B01J2523/00 ,  Y02T10/22 ,  B01J2523/17 ,  B01J2523/72 ,  B01J2523/845 ,  B01J2523/31 ,  B01J2523/3718 ,  B01J2523/48

Abstract: Effect of the type of ZPGM material composition to improve thermal stability of ZPGM catalyst systems for TWC application is disclosed. ZPGM catalyst system samples are prepared and configured with washcoat on ceramic substrate, overcoat including doped Zirconia support oxide, and impregnation layer including either Cu1Mn2O4 spinel or Cu1Co1Mn1O4 spinel. Testing of ZPGM catalyst samples including variations of aging temperatures and different impregnation layer materials are developed under isothermal steady state sweep test condition for ZPGM catalyst systems to evaluate performance especially NOx conversions and level of thermal stability. As a result disclosed ZPGM catalyst systems with most suitable spinel that includes Cu1Co1Mn1O4 in impregnation layer exhibit high NOx conversion and significant improved thermal stability compare to Cu1Mn2O4 spinel, which is suitable for under floor and close coupled TWC application. The effect of adding Co to Cu—Mn spinel composition to improve thermal stability confirmed by TPR measurement.

公开(公告)号：US20170095802A1

公开(公告)日：2017-04-06

申请号：US14872972

申请日：2015-10-01

Applicant: Clean Diesel Technologies, Inc.

Inventor： Zahra Nazarpoor ,  Stephen J. Golden

IPC: B01J23/889 ,  B01J23/02 ,  B01J21/06 ,  B01J23/00

CPC classification number: B01J23/8892 ,  B01D53/945 ,  B01D2255/204 ,  B01D2255/2042 ,  B01D2255/20707 ,  B01D2255/20715 ,  B01D2255/2073 ,  B01D2255/20761 ,  B01D2255/405 ,  B01D2255/65 ,  B01D2255/9207 ,  B01J21/066 ,  B01J23/005 ,  B01J35/002 ,  Y02T10/22

Abstract: The present disclosure describes bulk powder Zero-PGM material compositions including a CuMn2O4 spinel structure supported on doped zirconia support oxides powders, including Ba, Sr, and Ti at different dopant loadings produced by different conventional synthetic methods. BET-surface area and XRD analysis are performed for a plurality of doped zirconia support oxides to compare the thermal stability, before and after deposition of Cu—Mn spinel. Additionally, bulk powder ZPGM catalyst compositions are subjected to a steady-state isothermal sweep test to determine NO conversion capabilities. The selected support oxide material compositions are capable of providing increased surface areas for improved thermal stability leading to a more effective utilization of ZPGM catalyst materials with enhanced NO conversion and improved thermal stability for TWC applications.

公开(公告)号：US20170095801A1

公开(公告)日：2017-04-06

申请号：US14872571

申请日：2015-10-01

Applicant: Clean Diesel Technologies, Inc.

Inventor： Zahra Nazarpoor ,  Stephen J. Golden

IPC: B01J23/889 ,  B01J37/04 ,  B01J37/02 ,  B01J23/00 ,  B01J37/08

CPC classification number: B01J23/8892 ,  B01D53/945 ,  B01D2255/20715 ,  B01D2255/2073 ,  B01D2255/20761 ,  B01D2255/405 ,  B01D2255/65 ,  B01D2255/908 ,  B01J23/005 ,  B01J35/0006 ,  B01J37/0242 ,  B01J37/0244 ,  B01J37/08 ,  Y02T10/22

Abstract: The present disclosure describes ZPGM catalyst material compositions having significantly high oxygen storage capacity for a plurality of TWC applications. The disclosed ZPGM catalyst material compositions include a Cu—Mn spinel deposited on doped Zirconia support oxide. The disclosed ZPGM catalyst material compositions exhibit significant high OSC stability properties after fuel cut aging. The improved thermal stability and OSC properties of the disclosed ZPGM catalyst material compositions are determined by performing a standard isothermal oscillating OSC tests. Fresh and aged ZPGM catalyst material compositions are employed within the standard isothermal oscillating OSC test, over multiple reducing/oxidizing cycles at a temperature of about 575° C.

公开(公告)号：US09610570B2

公开(公告)日：2017-04-04

申请号：US14530373

申请日：2014-10-31

Applicant: Clean Diesel Technologies, Inc.

Inventor： Zahra Nazarpoor ,  Stephen J. Golden

IPC: B01J23/889 ,  B01J23/847 ,  B01J21/04 ,  B01J21/06 ,  B01D53/94 ,  B01J23/20

CPC classification number: B01J23/8892 ,  B01D53/945 ,  B01D2255/207 ,  B01D2255/20715 ,  B01D2255/2073 ,  B01D2255/20761 ,  B01D2255/405 ,  B01D2255/65 ,  B01J23/20 ,  B01J2523/00 ,  Y02T10/22 ,  Y10S502/52712 ,  B01J2523/17 ,  B01J2523/72 ,  B01J2523/842

Abstract: Variations of coating processes of Cu—Mn—Fe ZPGM catalyst materials for TWC applications are disclosed. The disclosed coating processes for Cu—Mn—Fe spinel materials are enabled in the preparation ZPGM catalyst samples according to a plurality of catalyst configurations, which may include an alumina only washcoat layer coated on a suitable ceramic substrate, and an overcoat layer with or without an impregnation layer, including Cu—Mn—Fe spinel and doped Zirconia support oxide, prepared according to variations of disclosed coating processes. Activity measurements are considered under variety of lean condition to rich condition to analyze the influence of disclosed coating processes on TWC performance of ZPGM catalysts for a plurality of TWC applications. Different coating processes may substantially increase thermal stability and TWC activity, providing improved levels of NOx conversion that may lead to cost effective manufacturing solutions for ZPGM-TWC systems.

公开(公告)号：US09555400B2

公开(公告)日：2017-01-31

申请号：US14187587

申请日：2014-02-24

Applicant: Clean Diesel Technologies, Inc.

Inventor： Zahra Nazarpoor ,  Stephen J. Golden

IPC: B01J21/00 ,  B01J23/00 ,  B01J25/00 ,  B01J29/00 ,  B01J23/32 ,  B01J23/89 ,  B01J23/889 ,  B01J37/02 ,  B01D53/94 ,  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: Synergized Platinum Group Metals (SPGM) catalyst system for TWC application is disclosed. Disclosed SPGM catalyst system may include a washcoat that includes stoichiometric Cu—Mn spinel structure, supported on doped ZrO2, and an overcoat that includes PGM, such as platinum (Pt) supported on carrier material oxides, such as alumina. SPGM catalyst system shows significant improvement in nitrogen oxide reduction performance under lean and also rich operating conditions. Additionally, disclosed SPGM catalyst system exhibits enhanced catalytic activity for carbon monoxide conversion. Furthermore, disclosed SPGM catalyst systems are found to have enhanced catalytic activity compared to PGM catalyst system, showing that there is a synergistic effect between PGM catalyst, such as Pt, and Cu—Mn spinel within disclosed SPGM catalyst system, which help in activity and thermal stability of disclosed SPGM catalyst.

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修补基面涂层，其包括负载在掺杂的ZrO 2上的化学计量的Cu-Mn尖晶石结构，以及包含PGM的外涂层，例如负载在载体材料氧化物如氧化铝上的铂（Pt）。 SPGM催化剂体系在稀薄和丰富的操作条件下显示出氮氧化物还原性能的显着改善。 另外，所公开的SPGM催化剂体系对一氧化碳转化表现出增强的催化活性。 此外，发现所公开的SPGM催化剂体系与PGM催化剂体系相比具有增强的催化活性，表明在所公开的SPGM催化剂体系内的PGM催化剂如Pt和Cu-Mn尖晶石之间存在协同作用，这有助于活性和 公开的SPGM催化剂的热稳定性。

公开(公告)号：US09511350B2

公开(公告)日：2016-12-06

申请号：US13891647

申请日：2013-05-10

Applicant: Clean Diesel Technologies, Inc.

Inventor： Zahra Nazarpoor ,  Stephen J. Golden

IPC: B01D53/94 ,  B01J23/00 ,  B01J23/656

CPC classification number: B01J23/002 ,  B01D53/944 ,  B01D2255/104 ,  B01D2255/2061 ,  B01D2255/2073 ,  B01D2255/91 ,  B01D2258/012 ,  B01J23/6562 ,  B01J2523/00 ,  Y02A50/2341 ,  B01J2523/18 ,  B01J2523/36 ,  B01J2523/72

Abstract: Diesel oxidation ZPGM catalyst systems are disclosed. ZPGM catalyst systems may oxidize toxic gases, such as carbon monoxide, hydrocarbons and nitrogen oxides that may be included in exhaust gases. ZPGM catalyst systems may include: a substrate, a washcoat, and an impregnation layer. The washcoat may include at least one carrier material oxides. The impregnation layer may include at least one ZPGM catalyst, carrier material oxides and OSMs. Suitable known in the art chemical techniques, deposition methods and treatment systems may be employed in order to form the disclosed ZPGM catalyst systems.

Abstract translation: 公开了柴油氧化ZPGM催化剂体系。 ZPGM催化剂体系可以氧化可能包含在废气中的有毒气体，例如一氧化碳，碳氢化合物和氮氧化物。 ZPGM催化剂体系可以包括：基材，修补基面涂层和浸渍层。 修补基面涂层可以包括至少一种载体材料氧化物。 浸渍层可以包括至少一种ZPGM催化剂，载体材料氧化物和OSM。 为了形成所公开的ZPGM催化剂体系，可以采用本领域已知的合适的化学技术，沉积方法和处理系统。

公开(公告)号：US20160346765A1

公开(公告)日：2016-12-01

申请号：US14726807

申请日：2015-06-01

Applicant: Clean Diesel Technologies, Inc.

Inventor： Zahra Nazarpoor ,  Stephen J. Golden

IPC: B01J23/656 ,  B01J35/00 ,  B01J21/06 ,  B01J23/40

CPC classification number: B01J23/6562 ,  B01D53/944 ,  B01D53/9468 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/1026 ,  B01D2255/1028 ,  B01D2255/104 ,  B01D2255/2061 ,  B01D2255/2063 ,  B01D2255/2065 ,  B01D2255/2066 ,  B01D2255/2068 ,  B01D2255/20715 ,  B01D2255/2073 ,  B01D2255/20738 ,  B01D2255/20761 ,  B01D2255/2092 ,  B01D2255/40 ,  B01D2255/65 ,  B01D2255/9022 ,  B01J21/066 ,  B01J23/002 ,  B01J23/34 ,  B01J23/40 ,  B01J35/0006 ,  B01J37/0036 ,  B01J37/0201 ,  B01J37/0244 ,  B01J37/0248 ,  B01J37/088 ,  B01J2523/00 ,  B01J2523/36 ,  B01J2523/48 ,  B01J2523/72 ,  B01J2523/31 ,  B01J2523/824 ,  B01J2523/828

Abstract: Sulfur-resistant synergized platinum group metals (SPGM) catalysts with significant oxidation capabilities are disclosed. Catalytic layers of SPGM catalyst samples are prepared using conventional synthesis techniques to build a washcoat layer completely or substantially free of PGM material. The SPGM catalyst includes a washcoat layer comprising YMn2O5 (pseudobrookite) and an overcoat layer including a Pt/Pd composition with total PGM loading of at or below 5.0 g/ft3. Resistance to sulfur poisoning and catalytic stability is observed under 5.2 gS/L condition to assess significant improvements in NO oxidation, and HC and CO conversions.

Abstract translation: 公开了具有显着氧化能力的耐硫协同铂族金属（SPGM）催化剂。 使用常规合成技术制备SPGM催化剂样品的催化层以构建完全或基本上不含PGM材料的修补基面涂层。 SPGM催化剂包括含有YMn 2 O 5（假性萤石）的修补基面涂层和包含总PGM负载为5.0g / ft 3以下的Pt / Pd组合物的外涂层。 在5.2 gS / L条件下观察到耐硫中毒和催化稳定性，以评估NO氧化，HC和CO转化率的显着改善。