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公开(公告)号：US5750458A
公开(公告)日：1998-05-12
申请号：US271687
申请日：1994-07-07
摘要： A catalyst composition containing one or more binary oxides of palladium and rare earth metal such as Ce, La, Nd, Pr and/or Sm. The catalyst composition is used for the catalytic combustion of gaseous combustion mixtures of oxygen and carbonaceous fuels such as methane, e.g., a natural gas/air combustion mixture. Specific preferred binary oxides may be, for example, M.sub.2 O.sub.3.PdO (e.g., La.sub.2 O.sub.3.PdO) or 2M.sub.2 O.sub.3.PdO, wherein in each case M is La, Nd or Sm. A process of combusting gaseous carbonaceous fuels includes contacting a catalyst as described above under combustion conditions, e.g., 925.degree. C. to 1650.degree. C. and 1 to 20 atmospheres pressure, to carry out sustained combustion of the combustion mixture, including catalytically supported thermal combustion. Regeneration of over-temperatured M.sub.2 O.sub.3.PdO catalyst is also provided for.
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2.发明授权Process conditions for operation of ignition catalyst for natural gas combustion 失效用于天然气燃烧的点火催化剂的操作条件
公开(公告)号：US5214912A
公开(公告)日：1993-06-01
申请号：US776907
申请日：1991-10-16
摘要： A method for operating a palladium oxide containing catalytic combustor useful, e.g., for powering a gas turbine, wherein the palladium oxide is supported on a metal oxide such as alumina, ceria, titania or tantalum oxide. The method involves maintaining control of the temperature within the combustor in such a manner as to insure the presence of palladium oxide. By maintaining the temperature below about 800.degree. C. decomposition of palladium oxide into metallic palladium is avoided and high catalytic activity is retained. Regeneration of catalyst following inactivation resulting from an over-temperature is accomplished by using a heat soak in a temperature range which varies depending on the metal oxide used to support the palladium oxide.
摘要翻译： 一种用于操作含氧化钯的催化燃烧器的方法，其可用于例如为燃气轮机供电，其中氧化钯负载在诸如氧化铝，二氧化铈，二氧化钛或氧化钽的金属氧化物上。 该方法包括以确保氧化钯存在的方式维持燃烧室内温度的控制。 通过保持温度低于约800℃，避免氧化钯分解成金属钯，并保持高催化活性。 通过在根据用于负载氧化钯的金属氧化物而变化的温度范围内的热浸泡来实现由过温引起的失活后催化剂的再生。
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公开(公告)号：US5552360A
公开(公告)日：1996-09-03
申请号：US222353
申请日：1994-04-04
IPC分类号： F23R3/40 , B01J23/44 , B01J23/63 , B01J35/00 , F23C13/00 , B01J21/04 , B01J21/08 , B01J21/10 , B01J27/224
CPC分类号： B01J35/0006 , F23C13/00
摘要： A combustor for supporting the catalytic combustion of a gaseous carbonaceous fuel/air combustion mixture contains a catalyst zone in which is disposed a catalyst body comprising at least a first and a second catalyst member and further contains a downstream zone where homogeneous combustion occurs. Each catalyst member is comprised of a carrier body having a catalyst material deposited thereon. The first carrier is made of a silica-magnesia-alumina material comprised primarily of cordierite, mullite and corundum and the second carrier is made of a ceramic fiber matrix material comprising ceramic (alumina-boron oxide-silica) fibers in a silicon carbide matrix.
摘要翻译： 用于支撑气态碳质燃料/空气燃烧混合物的催化燃烧的燃烧器包含催化剂区，其中设置有至少包括第一和第二催化剂构件的催化剂体，并且还包含发生均匀燃烧的下游区。 每个催化剂构件由其上沉积有催化剂材料的载体构成。 第一载体由主要由堇青石，莫来石和刚玉构成的二氧化硅 - 氧化镁 - 氧化铝材料制成，第二载体由在碳化硅基体中包含陶瓷（氧化铝 - 氧化硼 - 二氧化硅）纤维的陶瓷纤维基质材料制成。
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4.发明授权Praseodymium-palladium binary oxide, catalyst, methods of combustion and regeneration 失效镨钯二元氧化物，催化剂，燃烧和再生方法
公开(公告)号：US5169300A
公开(公告)日：1992-12-08
申请号：US828084
申请日：1992-01-30
CPC分类号： C01G55/00 , B01J23/63 , Y02P20/584
摘要： A novel praseodymium-palladium oxide compound has the formula Pr.sub.4 PdO.sub.7. The compound has utility as a catalyst for oxidation of combustion mixtures comprising oxygen (e.g., air) and gaseous carbonaceous fuels such as methane and displays excellent regeneration characteristics after exposure to decomposition-causing temperatures. The compound may be used in a catalyst composition by being coated as a washcoat on a suitable carrier. Catalytic combustion processes are carried out by contacting such combustion mixture with the catalyst under combustion conditions, including catalytically supported thermal combusiton. Regeneration of over-temperatured catalyst is also provided for.
摘要翻译： 一种新型的镨 - 氧化钯化合物具有式Pr4PdO7。 该化合物具有用于氧化包含氧（例如空气）和气态碳质燃料如甲烷的燃烧混合物的催化剂的效用，并且在暴露于分解引起的温度之后显示优异的再生特性。 该化合物可以通过在合适的载体上涂覆作为修补基面涂料而用于催化剂组合物中。 催化燃烧过程通过使燃烧混合物与催化剂在燃烧条件下接触进行，包括催化负载的热能。 还提供过温催化剂的再生。
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5.发明授权Process conditions for operation of ignition catalyst for natural gas combustion 失效用于天然气燃烧的点火催化剂的操作条件
公开(公告)号：US4893465A
公开(公告)日：1990-01-16
申请号：US234660
申请日：1988-08-22
CPC分类号： B01J19/2485 , F23C13/00 , F23R3/40 , B01J2219/00063 , B01J2219/002 , B01J2219/00231
摘要： A method for operating a palladium oxide containing catalytic combustor useful, e.g., for powering a gas turbine. The method involves maintaining control of the temperature within the combustor in such a manner as to insure the presence of palladium oxide. By maintaining the temperature below about 800.degree. C. decomposition of palladium oxide into metallic palladium is avoided and high catalytic activity is retained. Regeneration of catalyst following inactivation resulting from an over-temperature is accomplished by using a heat soak in the temperature range of about 530.degree. C.-650.degree. C.
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公开(公告)号：US5474441A
公开(公告)日：1995-12-12
申请号：US22248
申请日：1993-02-25
摘要： A catalyst bed (30) for a combustor (18) for supporting the catalytic combustion of a gaseous air/fuel (e.g., methane or natural gas) combustion mixture contains an igniter catalyst member (1) upstream of a promoter catalyst member (2). The catalyst members each comprise carrier monoliths, the igniter catalyst member (1) having an igniter catalyst material deposited thereon and the promoter catalyst member (2) having a promoter catalyst material deposited thereon. The igniter catalyst material is distinguished from the promoter catalyst material in one or more of the following ways: the igniter catalyst material may have (a) a higher catalytic activity for combustion of the air/fuel mixture, (b) a lower catalyst deactivation temperature than the promoter catalyst material, and/or (c) the promoter catalyst regeneration temperature range brackets the upper limit of the regeneration temperature range of the igniter catalyst.
摘要翻译： 用于支撑气态空气/燃料（例如，甲烷或天然气）燃烧混合物的催化燃烧的燃烧器（18）的催化剂床（30）在促进剂催化剂构件（2）的上游含有点火器催化剂构件（1） 。 催化剂构件各自包括载体整料，其上沉积有点火器催化剂材料的点火器催化剂构件（1）和其上沉积有助催化剂材料的助催化剂构件（2）。 点火器催化剂材料以一种或多种以下方式与助催化剂材料不同：点火器催化剂材料可具有（a）对于空气/燃料混合物燃烧的较高催化活性，（b）较低的催化剂失活温度 和/或（c）助催化剂催化剂再生温度范围包括点火器催化剂的再生温度范围的上限。
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7.发明授权
公开(公告)号：US5216875A
公开(公告)日：1993-06-08
申请号：US852371
申请日：1992-03-13
摘要： A process for operating a palladium oxide-containing catalytic combustor is useful, e.g., for powering a gas turbine. The palladium oxide is supported on a metal oxide such as alumina, lanthanide metal oxide-modified alumina, ceria, titania or tantalum oxide. The method involves maintaining control of the temperature within the combustor in such a manner as to insure the presence of palladium oxide. By maintaining the temperature below the decomposition onset temperature of palladium oxide (which is catalytically active for catalytic combustion) into metallic palladium (which is catalytically inactive) deactivation of the catalyst is avoided and high catalytic activity is retained. Regeneration of catalyst following inactivation resulting from an over-temperature is accomplished by using a heat soak in a regeneration temperature range which varies depending on the particular metal oxide used to support the palladium oxide.
摘要翻译： 用于操作含氧化钯的催化燃烧器的方法是有用的，例如用于为燃气轮机供电。 氧化钯负载在氧化铝，镧系金属氧化物改性氧化铝，二氧化铈，二氧化钛或氧化钽等金属氧化物上。 该方法包括以确保氧化钯存在的方式维持燃烧室内温度的控制。 通过将低于催化燃烧的氧化钯（其对于催化燃烧具有催化活性）的分解开始温度维持在金属钯（其是催化无活性的）中，避免了催化剂的失活，并且保持了高催化活性。 通过使用根据用于支撑氧化钯的特定金属氧化物而变化的再生温度范围内的热浸泡来实现由过温引起的失活后催化剂的再生。
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8.发明授权Praseodymium-palladium binary oxide, catalyst compositions containing the same, and methods of use 失效镨 - 钯二元氧化物，含有其的催化剂组合物和使用方法
公开(公告)号：US5102639A
公开(公告)日：1992-04-07
申请号：US684631
申请日：1991-04-12
CPC分类号： B01J23/63 , C01G55/00 , Y02P20/584
摘要： A novel praseodymium-palladium oxide compound has the formula Pr.sub.4 PdO.sub.7. The compound has utility as a catalyst for oxidation of combustion mixtures comprising oxygen (e.g., air) and gaseous carbonaceous fuels such as methane and displays excellent regeneration characteristics after exposure to decomposition-causing temperatures. The compound may be used in a catalyst composition by being coated as a washcoat on a suitable carrier. Catalytic combustion processes are carried out by contacting such combustion mixture with the catalyst under combustion conditions, including catalytically supported thermal combustion. Regeneration of over-temperatured catalyst is also provided for.
摘要翻译： 一种新型的镨 - 氧化钯化合物具有式Pr4PdO7。 该化合物具有用于氧化包含氧（例如空气）和气态碳质燃料如甲烷的燃烧混合物的催化剂的效用，并且在暴露于分解引起的温度之后显示优异的再生特性。 该化合物可以通过在合适的载体上涂覆作为修补基面涂料而用于催化剂组合物中。 催化燃烧过程通过使燃烧混合物与催化剂在燃烧条件下接触进行，包括催化负载的热燃烧。 还提供过温催化剂的再生。
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9.发明授权
公开(公告)号：US5863851A
公开(公告)日：1999-01-26
申请号：US800747
申请日：1997-02-14
摘要： A catalyst composition containing one or more binary oxides of palladium and rare earth metal such as Ce, La, Nd, Pr and/or Sm. The catalyst composition is used for the catalytic combustion of gaseous combustion mixtures of oxygen and carbonaceous fuels such as methane, e.g., a natural gas/air combustion mixture. Specific preferred binary oxides may be, for example, M.sub.2 O.sub.3.PdO (e.g., La.sub.2 O.sub.3.PdO) or 2M.sub.2 O.sub.3.PdO, wherein in each case M is La, Nd or Sm. A process of combusting gaseous carbonaceous fuels includes contacting a catalyst as described above under combustion conditions, e.g., 925.degree. C. to 1650.degree. C. and 1 to 20 atmospheres pressure, to carry out sustained combustion of the combustion mixture, including catalytically supported thermal combustion. Regeneration of over-temperatured M.sub.2 O.sub.3.PdO catalyst is also provided for.
摘要翻译： 含有一种或多种钯和稀土金属如Ce，La，Nd，Pr和/或Sm的二元氧化物的催化剂组合物。 催化剂组合物用于氧气和碳质燃料如甲烷的气体燃烧混合物的催化燃烧，例如天然气/空气燃烧混合物。 特别优选的二元氧化物可以是例如M 2 O 3 PdO（例如La 2 O 3·P 10）或2M 2 O 3·P 10，其中在每种情况下M是La，Nd或Sm。 燃烧气态含碳燃料的方法包括在燃烧条件例如925℃至1650℃和1至20大气压的压力下使如上所述的催化剂接触，以进行燃烧混合物的持续燃烧，包括催化负载的热 燃烧。 还提供了过温度M2O3.PdO催化剂的再生。
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公开(公告)号：US5378142A
公开(公告)日：1995-01-03
申请号：US684409
申请日：1991-04-12
IPC分类号： B01J23/63 , B01J23/96 , B01J38/12 , C01G55/00 , F23C13/00 , F23D3/40 , B01J23/10 , B01J23/56
摘要： A catalyst composition containing one or more binary oxides of palladium and rare earth metal such as Ce, La, Nd, Pr and/or Sm. The catalyst composition is used for the catalytic combustion of gaseous combustion mixtures of oxygen and carbonaceous fuels such as methane, e.g., a natural gas/air combustion mixture. Specific preferred binary oxides may be, for example, M.sub.2 O.sub.3.sup.. PdO (e.g., La.sub.2 O.sub.3.sup.. PdO) or 2M.sub.2 O.sub.3.sup.. PdO, wherein in each case M Is La, Nd or Sm. A process of combusting gaseous carbonaceous fuels includes contacting a catalyst as described above under combustion conditions, e.g., 925.degree. C. to 1650.degree. C. and 1 to 20 atmospheres pressure, to carry out sustained combustion of the combustion mixture, including catalytically supported thermal combustion. Regeneration of over-temperatured M.sub.2 O.sub.3.sup.. PdO catalyst is also provided for.
摘要翻译： 含有一种或多种钯和稀土金属如Ce，La，Nd，Pr和/或Sm的二元氧化物的催化剂组合物。 催化剂组合物用于氧气和碳质燃料如甲烷的气体燃烧混合物的催化燃烧，例如天然气/空气燃烧混合物。 特别优选的二元氧化物可以是例如M 2 O 3 PdO（例如La 2 O 3·P 10）或2M 2 O 3·P 10，其中在每种情况下M是La，Nd或Sm。 燃烧气态含碳燃料的方法包括在燃烧条件例如925℃至1650℃和1至20大气压的压力下使如上所述的催化剂接触，以进行燃烧混合物的持续燃烧，包括催化负载的热 燃烧。 还提供了过温度M2O3.PdO催化剂的再生。
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