High silica content zeolite-based catalyst
    1.
    发明授权
    High silica content zeolite-based catalyst 失效
    高二氧化硅含量的沸石基催化剂

    公开(公告)号:US06207605B1

    公开(公告)日:2001-03-27

    申请号:US08905409

    申请日:1997-08-04

    IPC分类号: B01J2904

    摘要: A high silica content zeolite-based catalyst for use in a reaction which uses a feedstock containing an aromatic hydrocarbon or which gives a product containing an aromatic hydrocarbon, which catalyst satisfies the following requirements (1), (2), (3) and (4): (1) the zeolite constituting a zeolite-based catalyst has an SiO2/Al2O3 molar ratio of from 20 to 200; (2) the zeolite constituting a zeolite-based catalyst has a primary particle diameter of from 0.3 to 3 &mgr;m; (3) when a zeolite-based catalyst is converted into H type, the H type zeolite-based catalyst has a ratio of the number of surface acid sites to the total number of acid sites is from 0.03 to 0.15; and (4) a zeolite-based catalyst exhibits a pyridine-desorbed amount (B) as measured at a temperature of from 500° C. to 900° C. by a hot desorption method when converted into H type after being subjected to a steam treatment at an H2O partial pressure of 0.8 atm and a temperature of 650° C. for 5 hours, and a pyridine-desorbed amount (A) as measured at a temperature of from 500° C. to 900° C. by a hot desorption method when converted into H type without the steam treatment, which amounts satisfy the following requirements: &agr;≦1.6 α = ( 1 B 2 - 1 A 2 ) ÷ 5 × 10 5 .

    摘要翻译: 用于反应中的高二氧化硅含量的沸石基催化剂,其使用含有芳族烃的原料或产生含有芳族烃的产物,该催化剂满足以下要求(1),(2),(3)和( 4):(1)构成沸石型催化剂的沸石的SiO 2 / Al 2 O 3摩尔比为20〜200; (2)构成沸石型催化剂的沸石的初级粒径为0.3〜3μm; (3)当沸石型催化剂转化为H型时,H型沸石型催化剂的表面酸性位数与酸性位置总数之比为0.03〜0.15; 和(4)沸石型催化剂在通过热脱附法在500℃〜900℃的温度下测定的吡啶解吸量(B)后,在经受蒸汽后变为H型时 在H 2 O分压为0.8atm,温度为650℃下处理5小时,并通过热解吸在500℃至900℃的温度下测定吡啶解吸量(A) 方法转换为H型无蒸汽处理,其数量满足以下要求:

    Catalyst selectivation
    2.
    发明授权
    Catalyst selectivation 失效
    催化剂选择

    公开(公告)号:US06613708B1

    公开(公告)日:2003-09-02

    申请号:US09327241

    申请日:1999-06-07

    IPC分类号: B01J2904

    摘要: It has been discovered that catalysts may be modified by depositing an agent derivative from an agent such as an organometallic compound upon them. Such a modification gives a catalyst useful in increased selectivity to para-substituted alkyl benzenes, such as para-xylene (PX), through reacting an aromatic compound such as toluene and/or benzene with a methylating agent from hydrogen and carbon monoxide and/or carbon dioxide and/or methanol. Using these selectivated catalysts, para-substituted alkyl benzenes can be recovered in a selectivity of 80% or greater, significantly better than the equilibrium concentration of 24%.

    摘要翻译: 已经发现,可以通过从其中的试剂如有机金属化合物沉积试剂衍生物来改变催化剂。 通过使芳族化合物如甲苯和/或苯与甲基化剂从氢气和一氧化碳和/或其混合物反应,这种改性可提供对对取代的烷基苯(如对二甲苯(PX))增加选择性的催化剂。 二氧化碳和/或甲醇。 使用这些选择性催化剂,可以以80%或更高的选择性回收对位取代的烷基苯,显着优于24%的平衡浓度。

    Hydrocarbon hydrogenation catalyst and process

    公开(公告)号:US06436863B1

    公开(公告)日:2002-08-20

    申请号:US09730310

    申请日:2000-12-05

    IPC分类号: B01J2904

    摘要: A catalyst composition and process for preparing such catalyst composition which can be useful in contacting a hydrocarbon-containing fluid which contains a highly unsaturated hydrocarbon such as 1,3-butadiene, in the presence of hydrogen, with such catalyst composition in a hydrogenation zone under a hydrogenation condition effective to hydrogenate such highly unsaturated hydrocarbon to a less unsaturated hydrocarbon such as n-butene is disclosed. Such process for preparing a catalyst composition includes (1) combining a zeolite, a Group VIB metal, and an inorganic support to form a modified zeolite; (2) calcining such modified zeolite under a calcining condition to produce a calcined, modified zeolite; and (3) contacting such calcined, modified zeolite with a carburizing agent under a carburizing condition to provide such catalyst composition.

    Slurry for carrying zeolite and method for manufacturing zeolite-carrying adsorption element
    5.
    发明授权
    Slurry for carrying zeolite and method for manufacturing zeolite-carrying adsorption element 失效
    用于承载沸石的浆料和用于制造沸石载体吸附元件的方法

    公开(公告)号:US06727201B2

    公开(公告)日:2004-04-27

    申请号:US09961094

    申请日:2001-09-24

    IPC分类号: B01J2904

    摘要: The slurry for carrying zeolite of the present invention is slurry for attaching zeolite to a carrier and comprises zeolite and an organic emulsion binder dispersed in water. This slurry for carrying zeolite has viscosity not excessively high in spite of a large content of zeolite and binder and has a pH at which the zeolite and binder are stable. The slurry therefore can be stored for a long time in a stable manner.

    摘要翻译: 用于承载本发明的沸石的浆料是用于将沸石附着到载体上并包含分散在水中的沸石和有机乳液粘合剂的浆料。 这种用于承载沸石的浆液,尽管沸石和粘合剂的含量大,并且具有沸石和粘合剂稳定的pH,但粘度也不会过高。 因此,浆料可以以稳定的方式长时间储存​​。

    Process for preparing attrition resistant zeolitic layered catalyst composition
    6.
    发明授权
    Process for preparing attrition resistant zeolitic layered catalyst composition 有权
    制备耐磨沸石层状催化剂组合物的方法

    公开(公告)号:US06710003B2

    公开(公告)日:2004-03-23

    申请号:US10022024

    申请日:2001-12-13

    IPC分类号: B01J2904

    摘要: A layered catalyst composition is disclosed where the composition is prepared by bonding an outer layer comprising a bound zeolite (e.g. zeolite beta) to an inner core material (e.g. cordierite). The use of an organic bonding agent in the catalyst preparation procedure provides a composition that is sufficiently resistant to mechanical attrition to be used commercially in aromatic alkylation processes (e.g. benzene alkylation to ethylbenzene). Advantages associated with the use of layered compositions include a significant reduction in the amount of zeolite used for a given reactor loading and improved selectivity to desired alkylated aromatic products. Further benefits are realized when the layered composition is formed into shapes having a sufficiently high void volume to reduce pressure drop across the alkylation catalyst bed. This is especially relevant for operation involving high recycle rates and consequently low alkylating agent concentrations in the reaction zone. Such conditions are known to promote reduced byproduct formation.

    摘要翻译: 公开了一种分层催化剂组合物,其中通过将包含结合的沸石(例如β沸石)的外层粘合到内芯材料(例如堇青石)来制备组合物。 在催化剂制备方法中使用有机粘合剂提供了足够耐机械磨损的组合物,其可以在芳族烷基化方法(例如苯烷基化至乙苯)中商业使用。 与使用分层组合物相关的优点包括用于给定反应器负载的沸石的量的显着减少和对所需烷基化芳族产物的改进的选择性。 当层状组合物形成为具有足够高的空隙体积的形状以减少跨越烷基化催化剂床的压降时,可实现进一步的益处。 这对于涉及高回收率和因此反应区中低烷基化剂浓度的操作特别有用。 已知这种条件促进副产物形成。

    Polymerization-initiating supported systems
    7.
    发明授权
    Polymerization-initiating supported systems 失效
    聚合引发支持体系

    公开(公告)号:US06387837B1

    公开(公告)日:2002-05-14

    申请号:US09244240

    申请日:1999-02-03

    IPC分类号: B01J2904

    摘要: This invention relates to a process for the free-radical polymerization of monomers in gas phase or suspension processes using a supported, polymerization-initiating system comprising a) one or more polymerization-initiating components which initiate and start free-radical polymerization, b) a support, onto which said polymerization-initiating component is applied, and c) optionally, one or more modifiers which have an influence upon reaction kinetics and/or product properties.

    摘要翻译: 本发明涉及使用负载型聚合引发体系的气相或悬浮方法中单体的自由基聚合方法,该方法包括:a)引发和开始自由基聚合的一种或多种聚合引发组分,b)载体 ,其上应用了所述聚合引发组分,和c)任选的一种或多种对反应动力学和/或产物性质有影响的改性剂。

    Production and article of iron/surfactant-modified zeolite pellets to retain and destroy water pollutants
    8.
    发明授权
    Production and article of iron/surfactant-modified zeolite pellets to retain and destroy water pollutants 失效
    铁/表面活性剂改性沸石颗粒的生产和制品,以保持和破坏水污染物

    公开(公告)号:US06261986B1

    公开(公告)日:2001-07-17

    申请号:US09064691

    申请日:1998-04-22

    IPC分类号: B01J2904

    摘要: A method of producing a pollutant adsorption and degradation article, and such article, are provided. At least one adsorbent is mixed with at least one pollutant transforming agent to form a mixture. This mixture is compacted to form a porous, highly permeable article. If necessary, the article can be modified with surfactant either after the compacting step or by adding the surfactant to the mixture prior to the compacting step. In addition, if necessary, a binding agent can be added to the mixture prior to the compacting step.

    摘要翻译: 提供了一种生产污染物吸附和降解制品的方法,以及这种制品。 至少一种吸附剂与至少一种污染物转化剂混合以形成混合物。 将该混合物压实以形成多孔,高度可渗透的制品。 如果需要,可以在压实步骤之后用表面活性剂修饰制品,或者在压实步骤之前将表面活性剂加入到混合物中。 此外,如果需要,可以在压实步骤之前向混合物中加入粘合剂。

    Exhaust system comprising a heat-resistant HC adsorbent
    10.
    发明授权
    Exhaust system comprising a heat-resistant HC adsorbent 失效
    排气系统包括耐热HC吸附剂

    公开(公告)号:US06602815B1

    公开(公告)日:2003-08-05

    申请号:US09147526

    申请日:1999-01-14

    IPC分类号: B01J2904

    CPC分类号: B01J20/10 B01J29/87

    摘要: An exhaust system comprising a heat-resistant HC adsorbent comprising an MFI metallo-silicate including at least one of gallium (Ga) and indium (In) as a skeleton forming element, and a metal component ME including at least one of an alkali metal and an alkali earth metal in a content of ME≦0.05% by weight. Such an HC adsorbent has an excellent heat resistance.

    摘要翻译: 一种排气系统,包括耐热HC吸附剂,其包含含有作为骨架形成元素的镓(Ga)和铟(In)中的至少一种的MFI金属硅酸盐,以及包含碱金属和 含量为<0.05重量%的碱土金属。 这种HC吸附剂具有优异的耐热性。