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1.发明授权Thermally stable, high-surface-area metal oxides made by organic templating 失效通过有机模板制成的热稳定的高表面积金属氧化物
公开(公告)号：US6139814A
公开(公告)日：2000-10-31
申请号：US966729
申请日：1997-11-10
CPC分类号： C01B13/14 , C01B13/185 , C01F17/0043 , C01G25/00 , C01G25/02 , C01P2002/50 , C01P2002/72 , C01P2004/82 , C01P2006/12 , C01P2006/13
摘要： The invention is a method for producing a metal oxide product by steps including absorbing a liquid solution of metal oxide precursors onto crystalline or microcrystalline, porous structured organic material capable of being combusted at elevated temperatures; heating the organic material containing the absorbed solution for a time and at a temperature sufficient to vaporize the liquid, convert the metal oxide precursors to metal oxides, and combust the organic material. The metal oxide products have been found to retain a high specific surface area (porous structure) even when subjected to elevated temperatures, which makes them ideally suited for use as catalyst materials.
摘要翻译： 本发明是通过以下步骤生产金属氧化物产品的方法：包括将金属氧化物前体的液体溶液吸收到能够在高温下燃烧的结晶或微晶多孔结构的有机材料上; 将含有吸收溶液的有机材料加热至足以蒸发液体的温度，并将金属氧化物前体转化为金属氧化物，并燃烧有机材料。 已经发现金属氧化物产物即使经历升高的温度也能保持高比表面积（多孔结构），这使得它们非常适合用作催化剂材料。
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公开(公告)号：US06813884B2
公开(公告)日：2004-11-09
申请号：US09683642
申请日：2002-01-29
IPC分类号： F01N300
CPC分类号： B01D53/9418 , B01D2251/2062 , B01D2251/2067 , B01D2251/208 , B01D2255/1021 , F01N3/0231 , F01N3/035 , F01N3/206 , F01N13/009 , F01N2570/14 , F01N2610/02 , F01N2610/08
摘要： A diesel exhaust treatment system and method of oxidizing NO to NO2 at low temperatures are provided. The system utilizes a platinum catalyst on a zirconia-stabilized silica support which oxidizes NO in the exhaust gas to NO2 and uses the NO2 in an amount sufficient to oxidize particulate trapped on a particulate filter. The catalyst is preferably pre-treated at a temperature of between about 500 to 650° C. in a NO-oxygen-nitrogen mixture to increase conversion at low temperatures. The catalyst preferably includes an additional oxide component selected from the group consisting of TiO2, P2O5, WO3, B2O3, and Al2O3. or a heteropolyacid component to further increase activity at low temperatures or to decrease platinum loading at the same level of performance.
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公开(公告)号：US07966812B2
公开(公告)日：2011-06-28
申请号：US11847148
申请日：2007-08-29
申请人： Lifeng Xu , William Lewis Henderson Watkins , William Charles Ruona , George Wade Graham , Robert Walter McCabe
发明人： Lifeng Xu , William Lewis Henderson Watkins , William Charles Ruona , George Wade Graham , Robert Walter McCabe
CPC分类号： F01N3/208 , F01N3/035 , F01N9/002 , F01N13/009 , F01N2900/1622 , F02D41/029 , Y02T10/24 , Y02T10/47
摘要： A method of regenerating a particulate filter utilizes two temperature levels, with the first, lower, level removing stored hydrocarbons and urea from an SCR catalyst. The second, higher, level then follows for filter regeneration. Because the regeneration occurs after the SCR catalyst has been purged of hydrocarbons and urea, for example, the temperature experienced by the SCR catalyst during regeneration is reduced. In this way, SCR degradation may be reduced.
摘要翻译： 再生微粒过滤器的方法利用两个温度水平，第一个较低的水平从SCR催化剂中除去储存的烃和尿素。 然后第二个，更高的水平跟随过滤器再生。 因为再生发生在SCR催化剂被清除烃和尿素之后，例如，SCR催化剂在再生期间经历的温度降低。 以这种方式，可以降低SCR降解。
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公开(公告)号：US20090056310A1
公开(公告)日：2009-03-05
申请号：US11847148
申请日：2007-08-29
申请人： Lifeng Xu , William Lewis Henderson Watkins , William Charles Ruona , George Wade Graham , Robert Walter McCabe
发明人： Lifeng Xu , William Lewis Henderson Watkins , William Charles Ruona , George Wade Graham , Robert Walter McCabe
CPC分类号： F01N3/208 , F01N3/035 , F01N9/002 , F01N13/009 , F01N2900/1622 , F02D41/029 , Y02T10/24 , Y02T10/47
摘要： A method of regenerating a particulate filter in an apparatus comprising an internal combustion engine and a catalyst that employs urea as reductant for NOx is disclosed. The method comprises exposing the catalyst and particulate filter to a first, lower elevated exhaust temperature to remove urea deposits and/or stored hydrocarbon from the catalyst, and then exposing the catalyst and particulate filter to a second, higher elevated exhaust temperature to heat the particulate filter to decompose particulate matter in the particulate filter. In this manner, damage caused to the catalyst due to the decomposition and reaction of urea deposits and/or oxidation of stored hydrocarbon during particulate filter regeneration may be avoided.
摘要翻译： 公开了一种在包括内燃机和使用尿素作为还原剂的催化剂的装置中再生颗粒过滤器的方法。 该方法包括将催化剂和微粒过滤器暴露于第一，较低升高的废气温度以从催化剂中除去尿素沉积物和/或储存的烃，然后将催化剂和微粒过滤器暴露于第二较高的排气温度以加热颗粒物 过滤器以分解颗粒过滤器中的颗粒物质。 以这种方式，可以避免在颗粒过滤器再生期间由于尿素沉积物的分解和反应和/或储存的烃的氧化而导致的催化剂损伤。
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公开(公告)号：US06423293B1
公开(公告)日：2002-07-23
申请号：US08711631
申请日：1996-09-06
IPC分类号： C01B1300
CPC分类号： B01D53/945 , B01D2255/908 , B01J23/10 , B01J23/63 , Y02A50/2324 , Y02T10/22
摘要： The invention is a mixed oxide oxygen storage material useful as a catalyst or catalyst washcoat. The mixed oxide is praseodymium oxide loaded onto a support of either cerium oxide or cerium-zirconium oxide. The praseodymium oxide is loaded on the support so that the resultant mixed oxide contains praseodymium and cerium in a molar ratio of 1:4 to 4:1. This mixed oxide may be loaded with a catalyst like palladium for use in automotive exhaust gas systems.
摘要翻译： 本发明是用作催化剂或催化剂修补基面涂料的混合氧化物储氧材料。 混合氧化物是负载在氧化铈或铈 - 锆氧化物的载体上的氧化镨。 将氧化镨负载在载体上，使得所得混合氧化物含有摩尔比为1:4至4:1的镨和铈。 该混合氧化物可以装载用于汽车废气系统的催化剂如钯。
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公开(公告)号：US08516980B2
公开(公告)日：2013-08-27
申请号：US13615026
申请日：2012-09-13
申请人： Thomas G. Leone , Ross Dykstra Pursifull , Gopichandra Surnilla , Michael H. Shelby , Joseph Norman Ulrey , Robert Walter McCabe
发明人： Thomas G. Leone , Ross Dykstra Pursifull , Gopichandra Surnilla , Michael H. Shelby , Joseph Norman Ulrey , Robert Walter McCabe
IPC分类号： F02B43/08
CPC分类号： F02D9/08 , F02B43/12 , F02D41/0025 , F02D41/0047 , F02D41/021 , F02D41/1454 , F02M27/02 , F02M31/18 , Y02T10/126 , Y02T10/32
摘要： A method for operating an engine with a fuel reformer is presented. In one embodiment a method for operating an engine by injecting a gaseous fuel and a liquid fuel to at least an engine cylinder is presented. The method may prioritize the injection of the gaseous fuel in response to an amount of gaseous fuel stored in a fuel storage tank.
摘要翻译： 提出了一种用燃料重整器操作发动机的方法。 在一个实施例中，提出了一种通过将气体燃料和液体燃料喷射到至少一个发动机气缸来操作发动机的方法。 该方法可以响应于存储在燃料储罐中的气体燃料的量来优先注入气体燃料。
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公开(公告)号：US08001934B2
公开(公告)日：2011-08-23
申请号：US12756827
申请日：2010-04-08
CPC分类号： F02B43/12 , F02D19/0671 , F02D41/0027 , F02D41/187 , F02D2200/0406 , F23K5/007 , F23K2401/201 , Y02T10/32 , Y02T10/36
摘要： Various systems and methods are described for a controlling a flow of reformate fuel in a fuel system which includes a reformer and a storage tank coupled to an engine in a vehicle. The system includes a pump located between the reformer and the storage tank that is selectively operated in order to reduce parasitic losses on the system.
摘要翻译： 描述了用于控制燃料系统中的重整燃料流的各种系统和方法，其包括重整器和联接到车辆中的发动机的储罐。 该系统包括位于重整器和存储箱之间的泵，其被选择性地操作以减少系统上的寄生损耗。
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8.发明授权公开(公告)号：US07030054B2
公开(公告)日：2006-04-18
申请号：US10418767
申请日：2003-04-18
CPC分类号： F01N3/035 , B01D53/945 , B01D2255/104 , B01D2255/20746 , B01D2257/404 , B01D2257/502 , B01D2257/702 , B01J23/002 , B01J23/66 , B01J23/68 , B01J23/688 , B01J23/83 , B01J23/894 , B01J23/8986 , B01J37/0244 , B01J2523/00 , F01N3/023 , F01N2510/06 , Y02A50/2324 , Y02T10/22 , Y10S502/525 , B01J2523/18 , B01J2523/3706 , B01J2523/3737 , B01J2523/72
摘要： The present invention provides new platinum group metal (“PGM”) free catalytic compositions that comprise silver and/or cobalt stabilized ceria. These compositions facilitate soot oxidation during the regeneration of diesel particulate filters (DPF) thereby replacing PGM formulations. The compositions of the invention are particularly useful as washcoat compositions for DPFs as part of an automotive after-treatment system. Among the formulations tested, the silver-stabilized ceria and cobalt-stabilized ceria formulations e.g. can oxidize soot at 250–300° C. in the presence of NO2 and oxygen, while silver-stabilized ceria can oxidize diesel soot even in the presence of oxygen as the sole oxidizing agent at these temperatures. A perovshite composition containing Ag—La—Mn was very active at temperatures above 300° C.
摘要翻译： 本发明提供了包含银和/或钴稳定的二氧化铈的新的铂族金属（“PGM”）催化组合物。 这些组合物在柴油颗粒过滤器（DPF）的再生期间促进烟灰氧化，从而替代PGM制剂。 作为汽车后处理系统的一部分，本发明的组合物特别可用作DPF的修补基面涂料组合物。 在所测试的制剂中，银稳定的二氧化铈和钴稳定的二氧化铈制剂例如 可以在NO 2 2和氧的存在下在250-300℃下氧化烟灰，而在这些温度下，即使在作为唯一氧化剂的氧的存在下，银稳定的二氧化铈也可以氧化柴油烟灰。 含有Ag-La-Mn的钙钛矿组合物在高于300℃的温度下非常活泼
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9.发明授权High efficiency conversion of nitrogen oxides in an exhaust aftertreatment device at low temperature 有权在低温下排气后处理装置中氮氧化物的高效率转化公开(公告)号：US06742326B2
公开(公告)日：2004-06-01
申请号：US09682241
申请日：2001-08-09
申请人： Lifeng Xu , Robert Walter McCabe
发明人： Lifeng Xu , Robert Walter McCabe
IPC分类号： F01N300
CPC分类号： F01N3/0842 , F01N3/2006 , F01N3/2033 , F01N3/206 , F01N2570/18 , F02D41/0275 , Y02T10/24 , Y02T10/26
摘要： A system and method for providing operating conditions that provide higher efficiency NOx reduction in a lean NOx catalyst coupled to a lean-burning internal combustion engine. A catalyst containing reductant is caused to attain a temperature greater than 300° C. After a duration of about 10 seconds at the elevated temperature, the NOx conversion efficiency of the catalyst is increased in the 140-250° C. temperature range.
摘要翻译： 一种用于提供操作条件的系统和方法，所述操作条件在与稀燃内燃机相连的贫NOx催化剂中提供更高效率的NOx还原。 导致含有还原剂的催化剂达到大于300℃的温度。在高温下持续约10秒的时间后，催化剂的NOx转化效率在140-250℃的温度范围内增加。
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10.发明授权公开(公告)号：US09863348B2
公开(公告)日：2018-01-09
申请号：US12638633
申请日：2009-12-15
申请人： Carolyn Parks Hubbard , Robert Walter McCabe , Eva Thanasiu , David Karl Bidner , James Michael Kerns , Nian Xiao , Helmut Hans Ruhland , Moritz Klaus Springer , Thomas Lorenz , Georg Louven , Jeffrey Scott Hepburn
发明人： Carolyn Parks Hubbard , Robert Walter McCabe , Eva Thanasiu , David Karl Bidner , James Michael Kerns , Nian Xiao , Helmut Hans Ruhland , Moritz Klaus Springer , Thomas Lorenz , Georg Louven , Jeffrey Scott Hepburn
IPC分类号： F02D41/00 , F01N3/023 , F01N3/10 , F02D43/00 , F02D41/02 , F01N3/021 , F02D37/02 , F02D41/14 , F02P5/15
CPC分类号： F02D41/029 , F01N3/021 , F01N3/101 , F01N2560/08 , F02D37/02 , F02D41/0025 , F02D41/1454 , F02D2200/021 , F02D2200/0812 , F02P5/1508 , Y02T10/22
摘要： A system for filtering and oxidizing particulate matter produced by a gasoline direct injection engine is disclosed. In one embodiment, engine cylinder air-fuel is adjusted to allow soot to oxidize at an upstream particulate filter while exhaust gases are efficiently processed in a downstream catalyst.
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