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：US09517449B2

公开(公告)日：2016-12-13

申请号：US13927850

申请日：2013-06-26

Applicant: Clean Diesel Technologies, Inc.

Inventor： Zahra Nazarpoor ,  Sen Kitazumi ,  Johnny T. Ngo

IPC: B01J23/10 ,  B01J23/72 ,  B01J37/02 ,  B01J23/83 ,  B01D53/94 ,  B01J37/03 ,  B01J35/00 ,  B01J35/02 ,  B01J35/04 ,  B01J37/00

CPC classification number: B01J23/72 ,  B01D53/944 ,  B01D2255/206 ,  B01D2255/207 ,  B01D2255/65 ,  B01D2255/908 ,  B01J23/83 ,  B01J35/002 ,  B01J35/0066 ,  B01J35/023 ,  B01J35/04 ,  B01J37/0036 ,  B01J37/0225 ,  B01J37/03

Abstract: Solutions to the problem of washcoat and/or overcoat adhesion loss of ZPGM catalyst on metallic substrates are disclosed. Present disclosure provides a novel process for improving WCA to metallic substrates of ZPGM catalyst systems. Reduction of WCA loss and improved catalyst activity may be enabled by the selection of processing parameters determined from variations of pH and addition of binder to overcoat slurry, and particle size of washcoat. Processing parameters may be applied to a plurality of metallic substrates of different geometries and cell densities.

Abstract translation: 公开了在金属基底上ZPGM催化剂的修补基面涂层和/或外涂层附着损失问题的解决方案。 本发明提供了一种用于将WCA改善为ZPGM催化剂体系的金属基材的新方法。 通过选择由pH的变化和粘合剂添加到外涂层浆料确定的加工参数以及修补基面涂层的粒径，可以实现WCA损失的降低和催化剂活性的改善。 处理参数可以应用于不同几何形状和细胞密度的多个金属基底。

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。

公开(公告)号：US09498767B2

公开(公告)日：2016-11-22

申请号：US13904271

申请日：2013-05-29

Applicant: Clean Diesel Technologies, Inc.

Inventor： Zahra Nazarpoor

IPC: B01J23/68 ,  B01J23/00 ,  B01D53/94

CPC classification number: B01J23/688 ,  B01D53/944 ,  B01D2255/104 ,  B01D2255/2061 ,  B01D2255/2073 ,  B01D2255/402 ,  B01D2255/65 ,  B01D2258/012 ,  B01J23/002 ,  B01J2523/00 ,  B01J2523/18 ,  B01J2523/36 ,  B01J2523/72

Abstract: Diesel oxidation ZPGM catalyst systems using Y1-x AgxMnO3 perovskite are disclosed. The ZPGM catalyst system compositions may include Y1-x AgxMnO3 perovskite in impregnation component and at least one carrier material oxide in washcoat. The ZPGM catalyst system compositions may also include Y1-x AgxMnO3 perovskite co-precipitated in a carrier material oxide as washcoat. The catalyst activity is measured with an inlet gas mixture containing diesel exhaust composition and characterized according to performance in NO oxidation, NO2 production, NO storage capability and diesel oxidation applications.

Abstract translation: 公开了使用Y1-x AgxMnO3钙钛矿的柴油氧化ZPGM催化剂体系。 ZPGM催化剂体系组合物可以包括在浸渍组分中的Y1-x Ag x MnO 3钙钛矿和在修补基面涂层中的至少一种载体材料氧化物。 ZPGM催化剂体系组合物还可以包括在作为修补基面涂层的载体材料氧化物中共沉淀的Y1-x AgxMnO3钙钛矿。 催化剂活性用含有柴油机废气组成的入口气体混合物测量，并根据NO氧化，NO2生产，NO储存能力和柴油氧化应用的性能进行表征。

公开(公告)号：US20160312730A1

公开(公告)日：2016-10-27

申请号：US14692577

申请日：2015-04-21

Applicant: Clean Diesel Technologies, Inc.

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

IPC: F02D41/24 ,  F01N3/28

CPC classification number: F02D41/2432 ,  F01N3/28 ,  F01N2510/0684 ,  F02D41/08 ,  F02D41/1441 ,  F02D41/1446 ,  F02D41/1456 ,  F02D41/1475 ,  F02D41/2461 ,  F02D2250/36 ,  G01M15/104

Abstract: Modified calibration strategies for controlling an internal combustion engine and monitoring catalyst performance are disclosed. The modified calibration strategies are implemented using an engine and test cell/catalyst chamber setup wherein the engine is a Euro V 1.2 L turbo gasoline direct injection engine and test cells/catalyst chamber are implemented as substantially free of platinum group metals (PGM) catalysts, herein referred as ZPGM catalysts, and synergized PGM (SPGM) catalysts including a stoichiometric spinel structure within the catalyst configuration. The utilization of an open ECU enables the modified calibration of the engine out targeted AFR. The conventional ECU AFR control strategies are not modified to have the ECU AFR control strategies to continue running normally and only the final engine out targeted AFR values are modified by applying offset AFR values. The modified calibration strategies improve engine operation and catalyst conversion efficiency of the ZPGM and SPGM catalysts including the spinel structures.

Abstract translation: 公开了用于控制内燃机和监测催化剂性能的改进的校准策略。 改进的校准策略使用发动机和测试电池/催化剂室设置来实现，其中发动机是Euro V 1.2L涡轮汽油直接喷射发动机，并且测试电池/催化剂室基本上不含铂族金属（PGM）催化剂， 在本文中称为ZPGM催化剂，以及在催化剂构型中包括化学计量的尖晶石结构的协同PGM（SPGM）催化剂。 使用开放式ECU可以对发动机进行修改后的校准，以实现目标AFR。 传统的ECU AFR控制策略不会被修改为使ECU AFR控制策略能够正常运行，只有通过应用偏移AFR值才能修改目标AFR值。 改进的校准策略提高了包括尖晶石结构在内的ZPGM和SPGM催化剂的发动机运行和催化剂转化效率。