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    Production of ethylbenzene
    4.
    发明授权
    Production of ethylbenzene 失效
    生产乙苯

    公开(公告)号：US5334795A

    公开(公告)日：1994-08-02

    申请号：US967954

    申请日：1992-10-27

    Applicant: Pochen Chu ,  Michael E. Landis ,  Quang N. Le

    Inventor： Pochen Chu ,  Michael E. Landis ,  Quang N. Le

    IPC: C07C2/66

    CPC classification number: C07C2/66 ,  C07C2529/70

    Abstract: Ethylbenzene is produced by the alkylation of benzene with ethylene in the presence of an alkylation catalyst having a particular structure defined by its X-ray diffraction pattern. A preferred catalyst is the zeolite MCM-22. The process is typically carried out at a temperature of 300.degree. to 1000.degree. F. but the catalyst provides sufficient activity for the reaction to be carried out at temperatures below 700.degree. F. Liquid phase operation is preferred, giving a lower yield of polyethylated products. The use of the selected catalyst also results in a reduction of the xylene impurity level to values below 500 ppm in the product.

    Abstract translation: 在具有由其X射线衍射图形定义的特定结构的烷基化催化剂存在下，通过苯与乙烯的烷基化生产乙苯。 优选的催化剂是沸石MCM-22。 该方法通常在300至1000°F的温度下进行，但催化剂提供足够的活性以使反应在低于700°F的温度下进行。液相操作是优选的，从而降低聚乙烯化产物的产率 。 使用所选择的催化剂还导致二甲苯杂质水平降低到产品中低于500ppm的值。

    Layered cracking catalyst and method of manufacture and use thereof
    5.
    发明授权
    Layered cracking catalyst and method of manufacture and use thereof 失效
    层状裂化催化剂及其制造方法和用途

    公开(公告)号：US5179054A

    公开(公告)日：1993-01-12

    申请号：US735225

    申请日：1991-07-24

    Applicant: Paul H. Schipper ,  Hartley Owen ,  Joseph A. Herbst ,  Garry W. Kirker ,  Albin Huss, Jr. ,  Pochen Chu

    Inventor： Paul H. Schipper ,  Hartley Owen ,  Joseph A. Herbst ,  Garry W. Kirker ,  Albin Huss, Jr. ,  Pochen Chu

    IPC: B01J33/00 ,  C10G11/05

    CPC classification number: B01J33/00 ,  C10G11/05 ,  B01J2229/12 ,  B01J2229/42 ,  C10G2300/70

    Abstract: A layered catalyst suited to the catalytic cracking of heavy feeds comprises a core and a shell. The shell comprises at least 5 wt % of at least 1 molecular sieve having openings of at least 8 angstroms. The core comprises at least 10 wt % of at least 1 molecular sieve having openings comprising a 12 or less-membered ring and has a reduced, if any, content of said molecular sieve having openings of at least 8 angstroms, relative to its concentration in the shell. Suitable molecular sieve materials having openings of at least 8 angstroms include MCM-41, VPI-5, MCM-9 and layered metal oxides, e.g., pillared clays. The required molecular sieve of the core can include zeolite Y, Ultrastable Y or intermediate pore size zeolites such as ZSM-5. The shell which may further contain a metals passivator can act as a metals sink, and can remove metals from the unit by attrition. The catalyst is preferably prepared by forming the core and then coating or encapsulating the core with a shell material. The shell may also comprise an attritable coating of an amorphous rare earth oxide, aluminum oxide and aluminum phosphate composite, which traps metals.

    Abstract translation: 适用于重料的催化裂化的层状催化剂包括核和壳。 该壳包含至少5重量％的具有至少8埃的开口的至少1个分子筛。 核心包含至少10重量％的具有包含12个或更少元环的开口的至少1个分子筛，并且具有至少8埃的开口的所述分子筛的含量降低（如果有的话），相对于其浓度 贝壳。 具有至少8埃开口的合适的分子筛材料包括MCM-41，VPI-5，MCM-9和层状金属氧化物，例如柱状粘土。 核心所需的分子筛可包括沸石Y，超稳定Y或中等孔径沸石如ZSM-5。 可以进一步包含金属钝化剂的壳体可以用作金属沉槽，并且可以通过磨损从单元中去除金属。 催化剂优选通过形成核心然后用壳材料涂覆或包封核心来制备。 外壳还可以包含捕获金属的无定形稀土氧化物，氧化铝和磷酸铝复合材料的可磨损涂层。

    Zeolite-clay composition and uses thereof
    6.
    发明授权
    Zeolite-clay composition and uses thereof 失效

    公开(公告)号：US5140949A

    公开(公告)日：1992-08-25

    申请号：US758668

    申请日：1991-09-12

    Applicant: Pochen Chu ,  William E. Garwood

    Inventor： Pochen Chu ,  William E. Garwood

    IPC: A23K1/175 ,  B01J20/16 ,  B01J20/18

    CPC classification number: B01J20/18 ,  A23K20/28 ,  B01J20/16

    Abstract: A hydrous aluminosilicate adsorbent composition in which the active adsorbent is a mixture of non-fibrous clay with non-fibrous zeolite. The composition is useful as a feed supplement in animal husbandry, and as a topical adsorbent for veterinary use. The mixture has a high capacity for adsorption of ammonium cations, and a synergistically high selectivity for their adsorption. Beneficial effects as feed supplement may arise from lowering the amount of ammonia passed to the liver from the alimentary canal.

    Metal passivating agents
    7.
    发明授权
    Metal passivating agents 失效
    金属钝化剂

    公开(公告)号：US4919787A

    公开(公告)日：1990-04-24

    申请号：US335069

    申请日：1989-04-07

    Applicant: Arthur W. Chester ,  Pochen Chu ,  Albin Huss, Jr. ,  Garry W. Kirker

    Inventor： Arthur W. Chester ,  Pochen Chu ,  Albin Huss, Jr. ,  Garry W. Kirker

    IPC: B01J33/00 ,  C10G11/05

    CPC classification number: B01J33/00 ,  C10G11/05 ,  B01J2229/12 ,  B01J2229/42 ,  C10G2300/70 ,  Y10S502/521

    Abstract: An improved method for passivating metals in a hydrocarbon feedstock during catalytic cracking has been discovered. The method involves contacting the feedstock with a passivating agent comprising a precipitated porous rare earth oxide, alumina, and aluminum phosphate precipitate. The passivating agent may be coated on a cracking catalyst, be part of the matrix of a cracking catalyst, or be added to the cracking operation as discrete particles.

    Abstract translation: 已经发现了一种在催化裂化过程中钝化烃原料中的金属的改进方法。 该方法包括使原料与包含沉淀的多孔稀土氧化物，氧化铝和磷酸铝沉淀物的钝化剂接触。 钝化剂可以涂覆在裂化催化剂上，作为裂化催化剂的基质的一部分，或作为离散颗粒加入到裂化操作中。

    Catalytic cracking process using high equilibrium activity additive catalyst
    9.
    发明授权
    Catalytic cracking process using high equilibrium activity additive catalyst 失效
    催化裂化工艺采用高平衡活性添加剂催化剂

    公开(公告)号：US4898662A

    公开(公告)日：1990-02-06

    申请号：US264577

    申请日：1988-10-31

    Applicant: Pochen Chu ,  Sadi Mizrahi

    Inventor： Pochen Chu ,  Sadi Mizrahi

    IPC: B01J29/40 ,  C10G11/05

    CPC classification number: B01J29/40 ,  C10G11/05 ,  B01J2229/26 ,  B01J2229/36 ,  B01J2229/42

    Abstract: A catalytic cracking process is disclosed in which octane improvement is attained by the addition to conventional cracking catalysts of small amounts of additive catalyst comprising a class of zeolites characterized by a silica to alumina mole ratio greater than about 12 and a Constraint Index of about 1 to 12 bound in a matrix chosen such that the matrix component forms a thermodynamically favored compound with selected cations. Sustained catalytic activity is achieved by pre-exchanging the catalyst to a high level of selected cation loading. By extending the active life of the additive catalyst, markedly lower makeup catalyst addition rates are required.

    Abstract translation: 公开了一种催化裂解方法，其中通过加入少量添加剂催化剂的常规裂化催化剂来实现辛烷值改进，所述催化剂包含一类沸石，其特征在于二氧化硅与氧化铝的摩尔比大于约12，约束指数为约1至 12以选定的矩阵结合，使得基质组分与选择的阳离子形成热力学上有利的化合物。 通过将催化剂预交换为高水平的选择的阳离子负载来实现持续的催化活性。 通过延长添加剂催化剂的活性，需要显着降低催化剂添加量。

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