-
1.发明授权Process for utilizing doubly promoted catalyst with high geometric surface area 失效利用具有高几何表面积的双重促进催化剂的方法
公开(公告)号：US4541995A
公开(公告)日：1985-09-17
申请号：US670511
申请日：1984-11-13
申请人： Gwan Kim , Carmo J. Pereira , Louis Hegedus , James M. Maselli
发明人： Gwan Kim , Carmo J. Pereira , Louis Hegedus , James M. Maselli
CPC分类号： B01D53/945 , B01D53/9454 , B01J23/6562 , B01J35/023 , B01J35/026 , B01J35/10 , B01J35/1019 , B01J35/1042 , B01J35/1047 , B01J35/108 , B01J35/109 , F01N3/2828 , Y02T10/22 , Y10S423/13
摘要： An extrudate catalyst suitable for auto emission control is made from a solid, transitional alumina with a partially hollow interior. Deposited on the extrudate are two promoters, ceria and an alkali metal, and one or more platinum group metals. The preferred alkali metal is in the oxide form as lithia. The cylindrical extrudate has internal reinforcing vanes or ribs extending from the inner wall to the center of the extrudate particle. This configuration permits the catalyst to have the large geometric surface area per reactor volume yet, because of the openings inside the extrudate, the catalyst particles do not exhibit a large pressure drop when packed in a deep bed. These catalysts provide greater hydrocarbon and carbon monoxide conversions than do similar size spherical particles and they have improved light-off characteristics.
摘要翻译： 适用于自动排放控制的挤出物催化剂由具有部分中空内部的固体过渡氧化铝制成。 沉积在挤出物上的是两种促进剂，二氧化铈和碱金属，以及一种或多种铂族金属。 优选的碱金属是氧化物形式的锂化合物。 圆柱形挤出物具有从挤出物颗粒的内壁延伸到中心的内部增强叶片或肋。 该配置允许催化剂具有每个反应器体积大的几何表面积，由于挤出物内部的开口，催化剂颗粒在包装在深床中时不会表现出大的压降。 与类似尺寸的球形颗粒相比，这些催化剂提供更大的烃和一氧化碳转化率，并且它们具有改进的起燃特性。
-
公开(公告)号：US4510262A
公开(公告)日：1985-04-09
申请号：US542440
申请日：1983-10-17
申请人： Gwan Kim , Carmo J. Pereira , Louis Hegedus , James M. Maselli
发明人： Gwan Kim , Carmo J. Pereira , Louis Hegedus , James M. Maselli
IPC分类号： B01D53/94 , B01J23/656 , B01J35/02 , B01J35/10 , F01N3/28 , B01J21/04 , B01J23/10 , B01J23/58 , B01J35/04
CPC分类号： B01D53/945 , B01D53/9454 , B01J23/6562 , B01J35/0026 , B01J35/023 , B01J35/026 , B01J35/08 , B01J35/10 , B01J35/1014 , B01J35/1019 , B01J35/1038 , B01J35/1042 , B01J37/0009 , F01N3/2828 , Y02T10/22
摘要： An extrudate catalyst suitable for auto emission control is made from a solid, transitional aluminia with a partially hollow interior. Deposited on the extrudate are two promoters, ceria and an alkali metal, and one or more platinum group metals. The preferred alkali metal is in the oxide form as lithia. The cylindrical extrudate has internal reinforcing vanes or ribs extending from the inner wall to the center of the extrudate particle. This configuration permits the catalyst to have the large geometric surface area per reactor volume yet, because of the openings inside the extrudate, the catalyst particles do not exhibit a large pressure drop when packed in a deep bed. These catalysts provide greater hydrocarbon and carbon monoxide conversions than do similar size spherical particles and they have improved light-off characteristics.
摘要翻译： 适用于自动排放控制的挤出物催化剂由具有部分中空内部的固体，过渡性铝铝制成。 沉积在挤出物上的是两种促进剂，二氧化铈和碱金属，以及一种或多种铂族金属。 优选的碱金属是氧化物形式的锂化合物。 圆柱形挤出物具有从挤出物颗粒的内壁延伸到中心的内部增强叶片或肋。 该配置允许催化剂具有每个反应器体积大的几何表面积，由于挤出物内部的开口，催化剂颗粒在包装在深床中时不会表现出大的压降。 与类似尺寸的球形颗粒相比，这些催化剂提供更大的烃和一氧化碳转化率，并且它们具有改进的起燃特性。
-
公开(公告)号：US4510261A
公开(公告)日：1985-04-09
申请号：US542346
申请日：1983-10-17
CPC分类号： B01D53/945 , B01D53/9454 , B01J23/40 , B01J35/026 , Y02T10/22
摘要： An extrudate catalyst suitable for auto emission control is made from a solid, transitional alumina. It has a partially hollow interior and one or more platinum group metals deposited on the extrudate. The cylindrical extrudate has internal reinforcing vanes or ribs extending from the inner wall to the center of the extrudate particle. This configuration permits the catalyst to have the large geometric surface area per reactor volume yet, because of the openings inside the extrudate, the catalyst particles do not exhibit a large pressure drop when packed in a deep bed. These catalysts provide greater hydrocarbon and carbon monoxide conversions than do similar size spherical particles and they have improved light-off characteristics.
摘要翻译： 适用于自动排放控制的挤出物催化剂由固体过渡氧化铝制成。 它具有部分中空的内部和沉积在挤出物上的一个或多个铂族金属。 圆柱形挤出物具有从挤出物颗粒的内壁延伸到中心的内部增强叶片或肋。 该配置允许催化剂具有每个反应器体积大的几何表面积，由于挤出物内部的开口，催化剂颗粒在包装在深床中时不会表现出大的压降。 与类似尺寸的球形颗粒相比，这些催化剂提供更大的烃和一氧化碳转化率，并且它们具有改进的起燃特性。
-
公开(公告)号：US4541996A
公开(公告)日：1985-09-17
申请号：US670192
申请日：1984-11-13
CPC分类号： B01D53/945 , B01D53/9454 , B01J23/40 , B01J35/026 , Y02T10/22 , Y10S423/13
摘要： An extrudate catalyst suitable for auto emission control is made from a solid, transitional alumina. It has a partially hollow interior and one or more platinum group metals deposited on the extrudate. The cylindrical extrudate has internal reinforcing vanes or ribs extending from the inner wall to the center of the extrudate particle. This configuration permits the catalyst to have the large geometric surface area per reactor volume yet, because of the openings inside the extrudate, the catalyst particles do not exhibit a large pressure drop when packed in a deep bed. These catalysts provide greater hydrocarbon and carbon monoxide conversions than do similar size spherical particles and they have improved light-off characteristics.
摘要翻译： 适用于自动排放控制的挤出物催化剂由固体过渡氧化铝制成。 它具有部分中空的内部和沉积在挤出物上的一个或多个铂族金属。 圆柱形挤出物具有从挤出物颗粒的内壁延伸到中心的内部增强叶片或肋。 该配置允许催化剂具有每个反应器体积大的几何表面积，由于挤出物内部的开口，催化剂颗粒在包装在深床中时不会表现出大的压降。 与类似尺寸的球形颗粒相比，这些催化剂提供更大的烃和一氧化碳转化率，并且它们具有改进的起燃特性。
-
公开(公告)号：US4170573A
公开(公告)日：1979-10-09
申请号：US894316
申请日：1978-04-07
CPC分类号： B01J23/63
摘要： A catalyst composition comprising a composite of ceria, lanthana, and alumina and a catalytically-effective amount of one or more platinum group metals deposited on the composite is disclosed. The composite is prepared by depositing a cerium compound on a calcined admixture of the lanthana and the alumina and calcining the composite. The catalyst is capable of operating in the combustion of carbonaceous fuel at high temperatures, e.g., greater than 2400.degree. F. (1317.degree. C.), for extended periods of time such as 20 hours with low emissions of carbon monoxide and nitrogen oxides.
摘要翻译： 公开了一种催化剂组合物，其包含二氧化铈，氧化镧和氧化铝的复合物和催化有效量的沉积在复合材料上的一种或多种铂族金属。 通过在氧化镧和氧化铝的煅烧混合物上沉积铈化合物并煅烧该复合材料来制备复合材料。 该催化剂能够在高温下（例如高于2400°F（1317℃））下燃烧碳质燃料，延长的时间，例如20小时，一氧化碳和氮氧化物的排放量低。
-
公开(公告)号：US4451441A
公开(公告)日：1984-05-29
申请号：US523511
申请日：1983-09-09
CPC分类号： F01N3/2825 , B01D53/86 , F01N13/009 , F01N3/035 , F01N2330/06 , F01N2570/02 , Y10S55/30
摘要： Suspended particles in exhaust gases, such as carbon and lead particles in internal combustion engine exhaust gases, are removed by passing the gases through a coarse filter and then through a fine filter. The filters may comprise a ceramic foam material and a catalyst material effective for the conversion of the carbon particles and/or gaseous pollutants in the exhaust gases to innocuous entities may be deposited on the filters.
摘要翻译： 通过使气体通过粗过滤器然后通过精细过滤器来除去废气中的悬浮颗粒，例如内燃机废气中的碳和铅颗粒。 过滤器可以包括陶瓷泡沫材料，并且有效地将废气中的碳颗粒和/或气体污染物转化成无害实体的催化剂材料可以沉积在过滤器上。
-
公开(公告)号：US4426320A
公开(公告)日：1984-01-17
申请号：US394220
申请日：1982-06-17
IPC分类号： B01D53/86 , F01N3/035 , F01N3/28 , F01N13/02 , B01J21/04 , B01J23/64 , B01J23/72 , B01J35/04
CPC分类号： B01D53/86 , F01N13/009 , F01N3/035 , F01N3/2825 , F01N2330/06 , F01N2570/02 , Y10S55/30
摘要： Suspended particles in exhaust gases, such as carbon and lead particles in internal combustion engine exhaust gases, are removed by passing the gases through a coarse filter and then through a fine filter. The filters may comprise a ceramic foam material and a catalyst material effective for the conversion of the carbon particles and/or gaseous pollutants in the exhaust gases to innocuous entities may be deposited on the filters.
摘要翻译： 通过使气体通过粗过滤器然后通过精细过滤器来除去废气中的悬浮颗粒，例如内燃机废气中的碳和铅颗粒。 过滤器可以包括陶瓷泡沫材料，并且有效地将废气中的碳颗粒和/或气体污染物转化成无害实体的催化剂材料可以沉积在过滤器上。
-
-
-
-
-
-
搜索结果
7 条记录 (耗时 0.019 秒)