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    • 1. 发明申请
    • EXHAUST GAS TREATMENT CATALYST
    • 排气处理催化剂
    • WO2005099870A3
    • 2005-12-15
    • PCT/US2005009225
    • 2005-03-21
    • ENGELHARD CORP
    • CHEN SHAU-LIN FRANKLINHU ZHICHENG
    • B01D53/00B01J23/40B01J23/58B01J23/63B01J35/04B01J37/02
    • B01J35/04B01D53/945B01D2255/1021B01D2255/1023B01D2255/1025B01D2255/204B01D2255/206B01D2255/20715B01D2255/2092B01D2255/407B01D2255/9027B01D2255/908B01D2255/9207B01J23/40B01J23/58B01J23/63B01J37/0244B01J37/0248Y02A50/2324Y02T10/22
    • Provided are an exhaust treatment catalyst and an exhaust article containing the catalyst. The catalyst comprises: (a) a carrier; (b) a first layer deposited on the carrier, said first layer comprising substantially only at least one refractive metal oxide; (c) a second layer deposited on the first layer, said second layer comprising substantially only at least one oxygen storage component and at least one binder therefor; and (d) a third layer deposited on the second layer, said third layer comprising at least one layer of one or more platinum group metal components supported on a refractory metal oxide support. Optionally, a fourth layer is deposited on the third layer wherein the fourth layer comprises one or more platinum group metal components supported on a refractory metal oxide support. As a further option, an overcoat layer may be deposited on the third or fourth layer wherein the overcoat layer comprises a catalyst poison sorbent. Also provided are methods for preparing the catalyst and methods for monitoring the exhaust storage capacity of an exhaust article containing the catalyst.
    • 提供了一种排气处理催化剂和包含该催化剂的排气制品。 该催化剂包含:(a)载体; (b)沉积在载体上的第一层,所述第一层基本上仅包含至少一种折射金属氧化物; (c)沉积在第一层上的第二层,所述第二层基本上仅包含至少一种储氧组分和至少一种用于其的粘合剂; 和(d)沉积在第二层上的第三层,所述第三层包含负载在难熔金属氧化物载体上的至少一层一种或多种铂族金属组分。 任选地,第四层沉积在第三层上,其中第四层包含负载在难熔金属氧化物载体上的一种或多种铂族金属组分。 作为进一步的选择,覆盖层可以沉积在第三或第四层上,其中覆盖层包含催化剂毒物吸附剂。 还提供了用于制备催化剂的方法和用于监测包含催化剂的排气制品的排气存储容量的方法。
    • 3. 发明申请
    • CATALYST SUPPORT
    • 催化剂支持
    • WO2004091765A3
    • 2005-03-24
    • PCT/US2004009581
    • 2004-03-26
    • ENGELHARD CORP
    • HU ZHICHENGWASSERMANN KNUTBURK PATRICK LXIE YOUCHANGLIN WEI
    • B01D53/94B01J21/06B01J23/58B01J35/00B01J37/02B01J23/56
    • B01D53/945B01J21/063B01J21/066B01J23/58B01J35/0006B01J37/0238Y02T10/22
    • A support for a catalyst for controlling vehicular exhaust emissions comprising a high surface area refractory metal oxide, e.g., gamma-alumina, having a monomolecular layer of a second oxide selected from the group consisting of titanium dioxide, cerium dioxide and zirconium dioxide. Typically, the monomolecular layer will have a thickness of less than about 10 angstroms. The support may be converted into a vehicular exhaust emission control catalyst by depositing the support on a substrate such as cordierite depositing a precious metal component such as platinum on at least part of the monomolecular layer. Preferably, the catalyst will also contain at least one NOX storage component deposited on at least part of the monomolecular layer. Catalysts prepared using the catalyst supports of the invention exhibit outstanding thermal stability and resistance to sulfur poisoning.
    • 一种用于控制车辆废气排放的催化剂的载体,包括具有选自二氧化钛,二氧化铈和二氧化锆的第二氧化物的单分子层的高表面积难熔金属氧化物,例如γ-氧化铝。 通常,单分子层将具有小于约10埃的厚度。 载体可以通过在至少部分单分子层上沉积诸如堇青石的衬底上沉积诸如铂的贵金属组分的载体而转化为车辆废气排放控制催化剂。 优选地,催化剂还将含有沉积在单分子层的至少一部分上的至少一种NO x储存组分。 使用本发明的催化剂载体制备的催化剂表现出优异的热稳定性和耐硫中毒性。
    • 4. 发明申请
    • CATALYST AND METHOD FOR REMOVING NOX AND SOX FROM A GASEOUS STREAM
    • 用于从气体流中除去NOX和SOX的催化剂和方法
    • WO02058825A3
    • 2003-03-27
    • PCT/US0201850
    • 2002-01-22
    • ENGELHARD CORP
    • HU ZHICHENGBURK PATRICK LCHEN SHAU-LIN F
    • F01N3/18B01D53/86B01D53/94B01J37/02F01N3/10F01N3/22F01N3/08
    • B01D53/94B01D53/86B01D53/8637B01D2257/302B01D2257/404
    • The present invention relates to a method and a catalyst composite useful for reducing contaminants in exhaust gas streams, especially gaseous streams containing sulfur oxide contaminants. More specifically, the present invention is concerned with a method for removing NOX and SOX contaminants from a gaseous stream comprising providing a catalyst composite having a downstream section and upstream section. The downstreams section comprises a first support, a first platinum component, and a NOX sorbent component. The upstream section comprises a second support, a second platinum component, and a SOX sorbent component selected from the group consisting of oxides of Mg, Zn, Mn, Fe, and Ni. In a sorbing period, a lean gaseous stream comprising NOX and SOX is passed within a sorbing temperature range through the upstream section to sorb at least some of the SOX contaminants and thereby provide a SOX depleted gaseous stream exiting the upstream section and entering the downstream section. The downstream section sorbs and abates the NOX in the gaseous stream and thereby provides a NOX depleted gaseous stream exiting the downstream section.
    • 本发明涉及一种可用于减少废气流,特别是含有硫氧化物污染物的气态物流中的污染物的方法和催化剂复合物。 更具体地,本发明涉及从气流中除去NO x和SO x污染物的方法,其包括提供具有下游段和上游段的催化剂复合物。 下游部分包括第一支撑件,第一铂元件和NOX吸附剂部件。 上游部分包括选自Mg,Zn,Mn,Fe和Ni的氧化物的第二载体,第二铂组分和SOX吸附剂组分。 在吸附期间,包含NO x和SO x的贫气流在吸附温度范围内通过上游部分以吸附至少一些SO x污染物,从而提供离开上游部分并进入下游部分的SO x耗尽的气流 。 下游部分吸附并减轻气流中的NO x,从而提供从下游部分排出的NO x耗尽的气态物流。
    • 6. 发明专利
    • Layered catalyst composite
    • 层状催化剂复合材料
    • JP2005161311A
    • 2005-06-23
    • JP2004341015
    • 2004-11-25
    • Engelhard Corpエンゲルハード・コーポレーシヨンEngelhard Corporation
    • HU ZHICHENGWAN CHUNG-ZONGLUI YIU-KWANDETTLING JOSEPH C
    • B01D53/86B01D53/94B01J23/44B01J23/46B01J23/63B01J23/89B01J35/00B01J37/02F01N3/10F01N3/28
    • B01D53/945B01D2255/902B01J23/63B01J35/0006B01J37/0244F01N3/10F01N3/101F01N3/106F01N2570/12F01N2570/16Y02T10/22
    • PROBLEM TO BE SOLVED: To provide a three-way catalyst system of a layered catalyst composite having a capability of simultaneously oxidizing a hydrocarbon and carbon monoxide and reducing nitrogen oxides into nitrogen. SOLUTION: In a structural design of the layered catalyst composite, there are a first layer and a second layer made to coexist. The first layer comprises a first support; at least one first palladium component and an oxygen storage component in intimate contact with the palladium component; optionally another first platinum group metal component; a zirconium component; at least one first alkaline earth metal component and at least one first rare earth metal component selected from the group consisting of lanthanum metal components and neodymium metal components. The second layer comprises a second support; at least one second palladium component; optionally another second platinum group metal component; at least one second alkaline earth metal component; at least one second rare earth metal component selected from the group consisting of lanthanum metal components and neodymium metal components and a zirconium component may be contained. COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:提供具有同时氧化烃和一氧化碳并将氮氧化物还原成氮的能力的层状催化剂复合材料的三元催化剂体系。 解决方案:在层状催化剂复合材料的结构设计中,存在共存的第一层和第二层。 第一层包括第一载体; 至少一种第一钯组分和与钯组分紧密接触的储氧组分; 另外的第一铂族金属组分; 锆组分; 至少一种第一碱土金属组分和至少一种选自镧金属组分和钕金属组分的第一稀土金属组分。 第二层包括第二支撑件; 至少一个第二钯组分; 另一种第二铂族金属组分; 至少一种第二碱土金属组分; 可以含有选自镧金属成分和钕金属成分以及锆成分的至少一种稀土金属成分。 版权所有(C)2005,JPO&NCIPI
    • 8. 发明专利
    • SOX TRAP FOR ENHANCING NOX TRAP PERFORMANCE AND METHODS OF MAKING AND USING THE SAME
    • AU2003220351A1
    • 2004-09-06
    • AU2003220351
    • 2003-03-17
    • ENGELHARD CORP
    • BURK PATRICK LCHEN SHAU-LIN FHU ZHICHENG
    • F01N3/18B01D53/86B01D53/94B01J37/02F01N3/10F01N3/22
    • The present invention relates to a method and a catalyst composite useful for reducing contaminants in exhaust gas streams containing sulfur oxide contaminants. The method for removing NOx and SOx contaminants from a gaseous stream comprises providing a catalyst composite having a downstream section and an upstream section. The downstream section comprises a first support, a first platinum component, and a NOx sorbent component. The upstream section comprises a second support, a second platinum component, and a SOx sorbent component selected from the group consisting of oxides of Mg, Sr, and Ba. In a sorbing period, a lean gaseous stream comprising NOx and SOx is passed through the upstream section to sorb at least some of the SOx contaminants. The downstream section sorbs and abates the NOx in the gaseous stream. In a SOx desorbing period, the temperature of the gaseous stream is raised to within a desorbing temperature range to thereby desorb and abate at least some of the SOx contaminants in the upstream section. The desorbing temperature range is sufficiently high such that the SOx contaminants are substantially not sorbed in the downstream section. In a NOx desorbing period, the exhaust gas is converted from a lean stream to a rich stream to desorb and reduce at least some of the NOx contaminants from the downstream section.