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1.发明授权
公开(公告)号：US5041407A
公开(公告)日：1991-08-20
申请号：US450634
申请日：1989-12-14
CPC分类号： B01J23/63 , B01D53/945 , B01J23/58 , Y02T10/22
摘要： A three-way catalyst for use in treating automotive exhaust gases employs a delta alumina support which contains oxides of cerium plus barium and/or lanthanum, plus at least one Group VIII noble metal from the group consisting of platinum, palladium, rhodium, ruthenium and iridium.
摘要翻译： 用于处理汽车废气的三元催化剂采用含有铈加钡和/或镧的氧化物的δ型氧化铝载体，以及来自铂，钯，铑，钌等的至少一种VIII族贵金属， 铱。
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公开(公告)号：US4868148A
公开(公告)日：1989-09-19
申请号：US201245
申请日：1988-06-01
CPC分类号： B01D53/945 , B01J23/63 , B01J23/89 , B01J37/024 , B01D2255/908 , Y02T10/22
摘要： This invention relates to a catalytic composite for treating an exhaust gas comprising a first support which is refractory inorganic oxide having dispersed thereon at least one noble metal component and having dispersed immediately thereon an overlayer comprising at least one oxygen storage component and optionally a second support which is a refractory inorganic oxide. The first support may be selected from the group consisting of alumina, silica, titania, zirconia and aluminosilicates with alumina being preferred. Additionally, the noble metal component may be selected from the group consisting of platinum, palladium, rhodium, ruthenium and iridium. The oxygen storage component is an oxide of a metal which includes cerium, iron, nickel, cobalt lanthanum, neodymium, praesodymium, etc. and mixtures thereof. Cerium oxide is a preferred oxygen storage component. Finally, the second support may be selected from the group consisting of alumina, silica, titania, zirconia and aluminosilicates, with alumina preferred. This invention also relates to a process for minimizing the content of hydrogen sulfide in an automotive exhaust gas which comprises contacting said exhaust gas with a catalyst composite comprising a first support which is a refractory inorganic oxide having dispersed thereon at least one noble metal component and having dispersed immediately thereon an overlayer comprising at least one oxygen storage component and optionally a second support which is refractory inorganic oxide.
摘要翻译： 本发明涉及一种用于处理废气的催化复合材料，其包括第一载体，其是在其上分散有至少一种贵金属组分的耐火无机氧化物，并且其上立即分散有包含至少一种储氧组分和任选的第二载体的覆层， 是耐火无机氧化物。 第一载体可以选自氧化铝，二氧化硅，二氧化钛，氧化锆和铝硅酸盐，氧化铝是优选的。 此外，贵金属组分可以选自铂，钯，铑，钌和铱。 储氧组分是包括铈，铁，镍，钴镧，钕，镨等的金属氧化物及其混合物。 氧化铈是优选的储氧组分。 最后，第二载体可以选自氧化铝，二氧化硅，二氧化钛，氧化锆和铝硅酸盐，优选氧化铝。 本发明还涉及使汽车尾气中的硫化氢含量最小化的方法，该方法包括使所述废气与催化剂复合物接触，所述催化剂复合材料包含第一载体，所述第一载体是分散在其上的至少一种贵金属组分的耐火无机氧化物，并且具有 在其上立即分散有包含至少一种储氧组分和任选的第二载体的覆层，其是耐火无机氧化物。
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公开(公告)号：US4128506A
公开(公告)日：1978-12-05
申请号：US871706
申请日：1978-01-23
申请人： Louis Hegedus , Jack C. Summers
发明人： Louis Hegedus , Jack C. Summers
CPC分类号： B01D53/945 , B01J23/464 , B01J37/024 , Y02T10/22
摘要： A three-way layered catalyst adapted for use in a system operating at about the stoichiometric air/fuel ratio having significantly improved resistance to poisoning in automotive exhaust comprising an alumina support having a first layer of the catalyst material platinum positioned at the support surface and penetrating the body thereof to a desired depth with an inner second layer of the catalyst material rhodium, the second layer being adjacent to the first layer and penetrating the body of the support, the maximum concentration of platinum being at or near the surface of the support with the minimum concentration of rhodium in the first layer being at or close to the surface and increasing in concentration to a maximum to define the boundary between the first and second layers, the concentrations of platinum and rhodium decreasing inwardly from the boundary with the greater portion of rhodium being in the second layer.
摘要翻译： 适用于在大约化学计量空气/燃料比下操作的系统的三元层状催化剂具有显着提高的汽车尾气中毒性，包括具有位于支撑表面的催化剂材料铂的第一层的氧化铝载体，并且穿透 其主体具有催化剂材料铑的内部第二层的期望深度，第二层邻近第一层并穿透支撑体，铂的最大浓度在支撑体的表面处或附近， 第一层中铑的最小浓度处于或接近表面，并且浓度增加到最大以限定第一和第二层之间的边界，铂和铑的浓度从边界向内减少，其中较大部分 铑处于第二层。
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公开(公告)号：US4119571A
公开(公告)日：1978-10-10
申请号：US815791
申请日：1977-07-15
申请人： Louis Hegedus , Jack C. Summers
发明人： Louis Hegedus , Jack C. Summers
IPC分类号： B01D53/94 , B01J23/06 , B01J23/26 , B01J23/34 , B01J23/40 , B01J23/70 , B01J23/89 , B01J35/00 , B01J35/10 , C01F7/02 , B01J21/04 , B01J23/42 , B01J23/44
CPC分类号： B01J23/40 , B01J35/10 , B01J35/0006 , B01J35/1019 , B01J35/1042 , B01J35/1061 , B01J35/109
摘要： This invention relates to oxidation catalysts wherein the catalytically active metallic material has an impregnation depth of at least 90 microns up to about 250 microns on the porous support which has a surface area of at least 100 m.sup.2 /g. up to about 250 m.sup.2 /g. and a pore structure characterized by a macropore volume of at least 0.020 cm.sup.3 /g. and a macropore radius greater than about 10,000 A.degree., the maximum value for macropore volume being that at which the catalyst is unable to sustain the load and vibration forces to which it is subjected in the converter.
摘要翻译： 本发明涉及氧化催化剂，其中催化活性金属材料在表面积至少为100m 2 / g的多孔载体上具有至少90微米至多约250微米的浸渍深度。 高达约250m2 / g。 以及以大孔体积至少为0.020cm 3 / g为特征的孔结构。 大孔大于10,000A的大孔径，大孔体积的最大值是催化剂在转化器中不能承受载荷和振动力的最大值。
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公开(公告)号：US4051073A
公开(公告)日：1977-09-27
申请号：US658031
申请日：1976-02-13
申请人： Louis Hegedus , Jack C. Summers
发明人： Louis Hegedus , Jack C. Summers
IPC分类号： B01D53/94 , B01J23/06 , B01J23/26 , B01J23/34 , B01J23/40 , B01J23/70 , B01J23/89 , B01J35/00 , B01J35/10 , C01F7/02 , B01J21/04 , B01J23/42 , B01J23/44
CPC分类号： B01J23/40 , B01J35/10 , B01J35/0006 , B01J35/1019 , B01J35/1042 , B01J35/1061 , B01J35/109
摘要： This invention relates to oxidation catalysts wherein the catalytically active metallic material has an impregnation depth of at least 90 microns up to about 250 microns on the porous support which has a surface area of at least 100 m.sup.2 /g. up to about 250 m.sup.2 /g. and a pore structure characterized by a macropore volume of at least 0.020 cm.sup.3 /g. up to about 0.200 cm.sup.3 /g. and a macropore radius greater than about 10,000 A.
摘要翻译： 本发明涉及氧化催化剂，其中催化活性金属材料在表面积至少为100m 2 / g的多孔载体上具有至少90微米至多约250微米的浸渍深度。 高达约250m2 / g。 以及以大孔体积至少为0.020cm 3 / g为特征的孔结构。 高达约0.200cm 3 / g。 大孔大于10,000左右。
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公开(公告)号：US5024824A
公开(公告)日：1991-06-18
申请号：US384534
申请日：1989-07-25
CPC分类号： B01D53/945 , B01J23/63 , B01J23/89 , B01J37/024 , Y02T10/22
摘要： This invention relates to a catalytic composite for treating an exhaust gas comprising a first support which is a refractory inorganic oxide having dispersed thereon at least one noble metal component and having dispersed immediately thereon an overlayer comprising at least one oxygen storage component and optionally a second support which is a refractory inorganic oxide. The first support may be selected from the group consisting of alumina, silica, titania, zirconia and aluminosilicates with alumina being preferred. Additionally, the noble metal component may be selected from the group consisting of platinum, palladium, rhodium, ruthernium and iridium. The oxygen storage component is an oxide of a metal which includes cerium, iron, nickel, cobalt lanthanum, neodymium, praesodymium, etc. and mixtures thereof. Cerium oxide is a preferred oxygen storage component. Finally, the second support may be selected from the group consisting of alumina, silica, titania, zirconia and aluminosilicates, with alumina preferred. This invention also relates to a process for minimizing the content of hydrogen sulfide in an automotive exhaust gas which comprises contacting said exhaust gas with a catalytic composite comprising a first support which is a refractory inorganic oxide having dispersed thereon at least one noble metal component and having dispersed immediately thereon an overlayer comprising at least one oxygen storage component and optionally a second support which is a refractory inorganic oxide.
摘要翻译： 本发明涉及一种用于处理废气的催化复合材料，其包括第一载体，其是在其上分散有至少一种贵金属组分的耐火无机氧化物，并且在其上立即分散有包含至少一种储氧组分和任选的第二载体 它是耐火无机氧化物。 第一载体可以选自氧化铝，二氧化硅，二氧化钛，氧化锆和铝硅酸盐，氧化铝是优选的。 另外，贵金属组分可以选自铂，钯，铑，铯和铱。 储氧组分是包括铈，铁，镍，钴镧，钕，镨等的金属氧化物及其混合物。 氧化铈是优选的储氧组分。 最后，第二载体可以选自氧化铝，二氧化硅，二氧化钛，氧化锆和铝硅酸盐，优选氧化铝。 本发明还涉及一种使汽车尾气中的硫化氢含量最小化的方法，该方法包括使所述废气与催化剂复合物接触，所述催化剂复合材料包含第一载体，所述第一载体是其上分散有至少一种贵金属组分的耐火无机氧化物，并且具有 在其上立即分散有包含至少一个储氧组分和任选的第二载体的覆层，其是耐火无机氧化物。
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公开(公告)号：US4061593A
公开(公告)日：1977-12-06
申请号：US762676
申请日：1977-01-26
申请人： Jack C. Summers
发明人： Jack C. Summers
CPC分类号： B01D53/508 , C01F11/18 , C01F11/464
摘要： Sulfate absorbent calcium hydroxide is dispersed in a binder and pelletized. The pellets are exposed to carbon dioxide at elevated temperatures to convert at least a portion of the calcium hydroxide to calcium carbonate. Pellets so treated are suitable for prolonged use in fixed volume sulfur oxide and sulfate scrubber vessels.
摘要翻译： 将硫酸盐吸收性氢氧化钙分散在粘合剂中并造粒。 将颗粒在升高的温度下暴露于二氧化碳，以将至少一部分氢氧化钙转化为碳酸钙。 如此处理的颗粒适合长期在固定体积的硫氧化物和硫酸盐洗涤器中使用。
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8.发明授权
公开(公告)号：US5672557A
公开(公告)日：1997-09-30
申请号：US625756
申请日：1996-03-29
IPC分类号： B01D53/86 , B01D53/94 , B01J23/56 , B01J23/63 , B01J37/02 , B01J21/04 , B01J23/10 , B01J23/44
CPC分类号： B01D53/945 , B01J23/63 , B01J37/0242 , B01D2255/102 , Y02T10/22
摘要： A palladium three-way catalyst is supported on a unique ceria-lanthana-alumina support where the alumina content is lower than previously believed necessary to maintain catalyst activity. Preferably the ceria and lanthana constitute the major proportion of the support.
摘要翻译： 钯三元催化剂负载在独特的氧化铈 - 氧化镧 - 氧化铝载体上，其中氧化铝含量低于以前认为维持催化剂活性所必需的。 优选地，二氧化铈和氧化镧构成载体的主要比例。
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9.发明授权
公开(公告)号：US5116800A
公开(公告)日：1992-05-26
申请号：US625576
申请日：1990-12-11
CPC分类号： B01D53/945 , B01J23/58 , B01J23/63 , Y02T10/22
摘要： This invention relates to a high durability catalyst for treating automotive exhaust gas which produces a minimal amount of hydrogen sulfide and is essentially free of cerium oxide and which comprises a support consisting substantially of delta alumina, an effective amount of a promoter consisting essentially of barium oxide and, optionally, lanthanum oxide, and, effective amounts of the noble metals palladium and rhodium deposited on the support.In an additional embodiment of the invention,m the support may contain delta alumina, and, optionally zirconia, and the catalyst may contain an overlayer containing delta or gamma alumina, and optionally, zirconia. Effective amounts of the noble metals palladium and rhodium may be deposited on the support and/or on the overlayer.In another aspect, the invention resides in a process for treating the exhaust gases from automotive engines to remove carbon monoxide, hydrocarbons, and nitrogen oxides, and to minimize the production of hydrogen sulfide.
摘要翻译： 本发明涉及一种用于处理汽车废气的高耐久性催化剂，其产生最少量的硫化氢并且基本上不含氧化铈，并且其包含基本上由三氧化铝组成的载体，有效量的基本上由氧化钡组成的助催化剂 和任选的氧化镧以及沉积在载体上的贵金属钯和铑的有效量。 在本发明的另外的实施方案中，载体可以含有δ氧化铝和任选的氧化锆，并且催化剂可以含有含有δ或γ氧化铝和任选的氧化锆的覆盖层。 贵金属钯和铑的有效量可以沉积在载体和/或覆盖层上。 另一方面，本发明涉及一种处理来自汽车发动机的废气以除去一氧化碳，烃和氮氧化物并使硫化氢的产生最小化的方法。
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公开(公告)号：US4923842A
公开(公告)日：1990-05-08
申请号：US255245
申请日：1988-10-11
申请人： Jack C. Summers
发明人： Jack C. Summers
CPC分类号： B01D53/945 , B01J23/63 , B01J23/89 , B01J37/024 , Y02T10/22
摘要： This invention relates to an improved catalytic composite for treating an exhaust gas comprising a first support which is a refractory inorganic oxide, having dispersed thereon at least one oxygen storage component and at least one noble metal component and having dispersed immediately thereon an overlayer comprising lanthanum oxide and optionally a second support which is a refractory inorganic oxide. The first and second support may be selected from the group consisting of alumina, silica, titania, zirconia and aluminosilicates with alumina being preferred. Additionally, the noble metal component may be selected from the group consisting of platinum, palladium, rhodium, ruthenium and iridium. The oxygen storage component is an oxide of a metal which includes cerium, iron, nickel, cobalt lanthanum, neodymium, praesodymium, etc. and mixtures thereof. This invention also relates to a process for treating automotive exhaust comprising contacting the exhaust with the catalytic composite described above.The catalytic composite shows improved activity, especially for eliminating NO.sub.x, after extensive durability testing and also minimizes the formation of H.sub.2 S.
摘要翻译： 本发明涉及一种用于处理废气的改进的催化复合材料，其包括作为耐火无机氧化物的第一载体，其上分散有至少一种储氧组分和至少一种贵金属组分，并且其上立即分散有包含氧化镧的覆层 和任选的第二载体，其是耐火无机氧化物。 第一和第二载体可以选自氧化铝，二氧化硅，二氧化钛，氧化锆和铝硅酸盐，氧化铝是优选的。 此外，贵金属组分可以选自铂，钯，铑，钌和铱。 储氧组分是包括铈，铁，镍，钴镧，钕，镨等的金属氧化物及其混合物。 本发明还涉及一种用于处理汽车尾气的方法，包括使排气与上述催化剂复合物接触。 催化复合材料在经过广泛的耐久性测试后显示出改善的活性，特别是用于消除NOx，并且还使H2S的形成最小化。
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