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    • 4. 发明授权
    • Lean NO.sub.x catalyst/trap method
    • 精益NOx催化剂/捕集法
    • US5874057A
    • 1999-02-23
    • US500657
    • 1995-07-12
    • Michel DeebaJennifer S. FeeleyRobert J. Farrauto
    • Michel DeebaJennifer S. FeeleyRobert J. Farrauto
    • B01D53/86B01D53/94B01J23/58B01J23/63B01J23/648B01J23/652B01D53/56
    • B01D53/9422B01J23/58B01J23/63B01D2255/102B01D2255/202B01D2255/204B01D2255/902B01D2255/91F01N2570/16
    • A NO.sub.x abatement composition comprises a NO.sub.x abatement catalyst and a NO.sub.x sorbent material which are dispersed in proximity to, but segregated from, each other on a common refractory carrier member (10). The NO.sub.x sorbent material comprises a basic oxygenated metal compound and optionally further comprises ceria. The NO.sub.x abatement catalyst contains a catalytic metal component including a platinum metal catalytic component. The catalytic metal component is segregated from the NO.sub.x sorbent material, which may be one or more of metal oxides, metal carbonates, metal hydroxides and mixed metal oxides. At least the catalytic metal component and the NO.sub.x sorbent material must be on, or comprise separate, particles; the particles may either be admixed or may be disposed in separate layers (20a, 20b) on the carrier member (10). A NO.sub.x abatement method employs the composition and includes periodically adjusting the gas being treated between lean and stoichiometric/rich operating cycles.
    • NOx消除组合物包括在普通耐火材料承载构件(10)上分散在彼此附近但彼此分离的NOx消除催化剂和NOx吸附剂材料。 NOx吸附剂材料包含碱性氧化金属化合物,并且任选地还包含二氧化铈。 NOx消除催化剂含有包含铂金属催化组分的催化金属成分。 催化金属组分与NO x吸附剂材料分离,其可以是金属氧化物,金属碳酸盐,金属氢氧化物和混合金属氧化物中的一种或多种。 至少催化金属组分和NOx吸附剂材料必须在或包含分开的颗粒; 可以将颗粒混合或者可以设置在载体构件(10)上的分开的层(20a,20b)中。 NOx减排方法采用该组合物并且包括周期性地调节在稀薄和理论空燃比/丰富的操作循环之间被处理的气体。
    • 7. 发明授权
    • Method of abating NO.sub.x and a catalytic material therefor
    • 减轻NOx及其催化材料的方法
    • US6080377A
    • 2000-06-27
    • US430065
    • 1995-04-27
    • Michel DeebaJennifer S. FeeleyRobert J. Farrauto
    • Michel DeebaJennifer S. FeeleyRobert J. Farrauto
    • B01D53/86B01D53/94B01J29/40B01J29/44B01J29/70B01J8/00
    • B01J29/44B01D53/9418B01D2251/208B01D2255/1021B01D2255/1026B01D2255/502B01D2255/504B01D2255/912Y02C20/10
    • A method for reducing gaseous nitrogen oxides present in a gas stream by reaction with a reductant species is practiced by flowing the gas stream under lean NO.sub.X -reducing conditions in contact with a catalytic material containing a catalytically effective amount of a catalytic species, e.g., a platinum group metal, and a reductant storage material, e.g., a zeolite, effective for storing reductant species for reaction with NO.sub.X, and providing an intermittent supply of the reductant to the gas stream. The catalytic material may be prepared in any manner, but one method is to incorporate a catalytically effective amount of the platinum into a template-bearing molecular sieve material, preferably ZSM-5 zeolite, to hinder the platinum from being incorporated into the pores of the molecular sieve material, and then calcining the molecular sieve material, whereby the template is removed from the molecular sieve material after the platinum is incorporated therein. Another method is to add a blocking agent to the molecular sieve material, then incorporate the platinum therein, and then calcine the material to remove the blocking agent. The catalytic material may contain less than about two percent by weight of zeolite plus platinum, e.g., less than about 0.5%, or from about 0.025% to 0.1% or 0.2% platinum.
    • 通过与还原剂物质反应来还原存在于气流中的气态氮氧化物的方法是通过在贫NOX还原条件下与含有催化有效量的催化物质(例如, 铂族金属和还原剂储存材料,例如有效地存储用于与NOX反应的还原剂物质的沸石,以及向气流中间歇地供应还原剂。 催化材料可以以任何方式制备,但是一种方法是将催化有效量的铂掺入含模板的分子筛材料,优选ZSM-5沸石中,以阻止铂被引入到 分子筛材料,然后煅烧分子筛材料,由此在引入铂后,从分子筛材料中除去模板。 另一种方法是向分子筛材料中加入封闭剂,然后在其中加入铂,然后煅烧该材料以除去封闭剂。 催化材料可以含有小于约2重量%的沸石加铂,例如小于约0.5%,或约0.025%至0.1%或0.2%的铂。
    • 9. 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。
    • 10. 发明授权
    • Method of abating NO.sub.x and preparation of catalytic material therefor
    • 降低NOx的方法及其催化剂的制备
    • US06150291A
    • 2000-11-21
    • US250652
    • 1999-02-16
    • Michel DeebaJennifer S. FeeleyRobert J. Farrauto
    • Michel DeebaJennifer S. FeeleyRobert J. Farrauto
    • B01D53/86B01D53/94B01J29/40B01J29/44B01J29/70B01J29/04
    • B01J29/44B01D53/9418B01D2251/208B01D2255/1021B01D2255/1026B01D2255/502B01D2255/504B01D2255/912Y02C20/10
    • A method for reducing gaseous nitrogen oxides present in a gas stream by reaction with a reductant species is practiced by flowing the gas stream under lean NO.sub.X -reducing conditions in contact with a catalytic material containing a catalytically effective amount of a catalytic species, e.g., a platinum group metal, and a reductant storage material, e.g., a zeolite, effective for storing reductant species for reaction with NO.sub.X, and providing an intermittent supply of the reductant to the gas stream. The catalytic material may be prepared in any manner, but one method is to incorporate a catalytically effective amount of the platinum into a template-bearing molecular sieve material, preferably ZSM-5, to hinder the platinum from being incorporated into the pores of the molecular sieve material, and then calcining the molecular sieve material, whereby the template is removed from the molecular sieve material after the platinum is incorporated therein. Another method is to add a blocking agent to the molecular sieve material, then incorporate the platinum therein, and then calcine the material to remove the blocking agent. The catalytic material may contain less than about two percent by weight of zeolite plus platinum, e.g., less than about 0.5%, or from about 0.025% to 0.1% or 0.2% platinum.
    • 通过与还原剂物质反应来还原存在于气流中的气态氮氧化物的方法是通过在贫NOX还原条件下与含有催化有效量的催化物质(例如, 铂族金属和还原剂储存材料,例如有效地存储用于与NOX反应的还原剂物质的沸石,以及向气流中间歇地供应还原剂。 催化材料可以以任何方式制备,但是一种方法是将催化有效量的铂掺入含模板的分子筛材料,优选ZSM-5中,以阻止铂结合到分子的孔中 筛分材料,然后煅烧分子筛材料,由此在引入铂后,从分子筛材料中除去模板。 另一种方法是向分子筛材料中加入封闭剂,然后在其中加入铂,然后煅烧该材料以除去封闭剂。 催化材料可以含有小于约2重量%的沸石加铂,例如小于约0.5%,或约0.025%至0.1%或0.2%的铂。