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    • 2. 发明授权
    • Catalyst configuration for catalytic combustion systems
    • 用于催化燃烧系统的催化剂配置
    • US5474441A
    • 1995-12-12
    • US22248
    • 1993-02-25
    • Robert J. FarrautoJennifer S. FeeleyDianne O. SimoneYiu K. LuiTeresa Kennelly
    • Robert J. FarrautoJennifer S. FeeleyDianne O. SimoneYiu K. LuiTeresa Kennelly
    • B01J23/10F23C13/00F23R3/40F23D3/40
    • F23C13/00F23C13/08F23R3/40
    • 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.
    • 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。
    • 7. 发明授权
    • Combustion catalysts containing binary oxides and processes using the
same
    • 含二元氧化物的燃烧催化剂及其使用方法
    • US5863851A
    • 1999-01-26
    • US800747
    • 1997-02-14
    • Teresa KennellyTing C. ChouRobert J. Farrauto
    • Teresa KennellyTing C. ChouRobert J. Farrauto
    • B01J23/63B01J23/96B01J38/12C01G55/00F23C13/00B01J20/34
    • B01J38/12B01J23/63B01J23/96
    • 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.
    • 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。
    • 9. 发明授权
    • Catalytic combustion process using supported palladium oxide catalysts
    • 使用负载型氧化钯催化剂的催化燃烧过程
    • US5216875A
    • 1993-06-08
    • US852371
    • 1992-03-13
    • Teresa KennellyRobert J. Farrauto
    • Teresa KennellyRobert J. Farrauto
    • F23C13/00F23C99/00F23R3/40
    • F23C13/00F23C13/08F23R3/40
    • 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.
    • 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。