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    Carrier for ethylene oxide catalysts
    1.
    发明授权
    Carrier for ethylene oxide catalysts 有权
    环氧乙烷催化剂载体

    公开(公告)号：US09452419B2

    公开(公告)日：2016-09-27

    申请号：US14279570

    申请日：2014-05-16

    Applicant: Scientific Design Company, Inc.

    Inventor： Nabil Rizkalla ,  Andrzej Rokicki

    IPC: B01J21/06 ,  B01J23/50 ,  B01J23/68 ,  C07D301/10 ,  B01J37/02 ,  B01J23/26

    CPC classification number: B01J23/685 ,  B01J21/04 ,  B01J21/063 ,  B01J23/26 ,  B01J23/50 ,  B01J23/688 ,  B01J37/0207 ,  C07D301/10 ,  Y02P20/52

    Abstract: A carrier for an ethylene epoxidation catalyst is provided that includes an alumina first component and a mixed metal oxide of alumina second component. The mixed metal oxide of alumina second component comprises a corundum lattice structure having a plurality of O—Al—O bonds, wherein an Al atom of at least one O—Al—O bond of the plurality of O—Al—O bonds, but not all of the plurality of O—Al—O bonds, is replaced with a divalent or trivalent transition metal selected from the group consisting of scandium (Sc), titanium (Ti), vanadium (V), chromium (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni) copper (Cu), and zinc (Zn). A catalyst containing the carrier, as well as a process for the epoxidation of ethylene using the catalyst are also disclosed.

    Abstract translation: 提供了一种用于乙烯环氧化催化剂的载体，其包括氧化铝第一组分和氧化铝第二组分的混合金属氧化物。 氧化铝第二成分的混合金属氧化物包括具有多个O-Al-O键的刚玉晶格结构，其中多个O-Al-O键中的至少一个O-Al-O键的Al原子，但是 不是所有的多个O-Al-O键都被选自钪（Sc），钛（Ti），钒（V），铬（Cr），锰（ Mn），铁（Fe），钴（Co），镍（Ni）铜（Cu）和锌（Zn）。 还公开了含有载体的催化剂以及使用该催化剂对乙烯进行环氧化的方法。

    Zinc-promoted catalysts for epoxidation of ethylene
    2.
    发明授权
    Zinc-promoted catalysts for epoxidation of ethylene 有权
    锌促进的乙烯环氧化催化剂

    公开(公告)号：US08975424B1

    公开(公告)日：2015-03-10

    申请号：US14143684

    申请日：2013-12-30

    Applicant: Scientific Design Company, Inc.

    Inventor： Wojciech Suchanek ,  Andrzej Rokicki

    IPC: C07D301/10 ,  B01J23/66

    CPC classification number: B01J23/66 ,  B01J23/688 ,  C07D301/10

    Abstract: A silver-based ethylene oxide catalyst is provided that has enhanced stability. The enhanced stability is obtained in the present invention by providing a silver-based ethylene oxide catalyst that includes from 100 ppm to 1000 ppm of zinc, and from greater than 450 ppm to less than 800 ppm of cesium. Zinc and cesium are promoters that are introduced to a finished carrier either prior to, coincidentally with, or subsequent to the deposition of the silver. The silver-based ethylene oxide catalyst can be used in the epoxidation of ethylene to ethylene oxide.

    Abstract translation: 提供了具有增强的稳定性的银基环氧乙烷催化剂。 通过提供包含100ppm至1000ppm锌以及大于450ppm至小于800ppm的铯的银基环氧乙烷催化剂，在本发明中获得了增强的稳定性。 锌和铯是在银沉积之前，巧合地或之后引入成品载体的促进剂。 银基环氧乙烷催化剂可用于乙烯至环氧乙烷的环氧化。

    METHOD FOR MAKING A HIGHLY SELECTIVE ETHYLENE OXIDE CATALYST
    3.
    发明申请
    METHOD FOR MAKING A HIGHLY SELECTIVE ETHYLENE OXIDE CATALYST 审中-公开
    制备高选择性乙烯氧化物催化剂的方法

    公开(公告)号：US20150057150A1

    公开(公告)日：2015-02-26

    申请号：US14537430

    申请日：2014-11-10

    Applicant: Scientific Design Company, Inc.

    Inventor： Nabil Rizkalla ,  Andrzej Rokicki

    IPC: B01J23/68

    CPC classification number: B01J23/688 ,  B01J21/04 ,  B01J23/66 ,  B01J37/0201 ,  B01J37/08 ,  C07D301/08 ,  C07D301/10 ,  Y02P20/52

    Abstract: A process for the preparation of a catalyst useful for the vapor phase production of ethylene oxide from ethylene and oxygen comprising providing a catalyst precursor comprising an inert support having a catalytically effective amount of a silver containing compound, a promoting amount of an alkali metal containing compound, and a promoting amount of a transition metal containing compound disposed thereon; calcining the catalyst precursor to convert the silver in the silver containing compound to metallic silver by heating the catalyst precursor to form a catalyst; and curing the catalyst in an inert gas atmosphere at temperatures of about 250° C. to about 600° C. for a period of about 1 hour to 200 hours.

    Abstract translation: 一种用于制备用于从乙烯和氧气生产环氧乙烷的催化剂的方法，包括提供催化剂前体，其包含具有催化有效量的含银化合物的惰性载体，促进量的含碱金属的化合物 ，和其上设置有过渡金属的化合物的促进量; 煅烧催化剂前体，通过加热催化剂前体以形成催化剂，将含银化合物中的银转化成金属银; 并在约250℃至约600℃的温度下在惰性气体气氛中固化催化剂约1小时至200小时。

    Silver-based ethylene oxide catalyst having reduced sodium content
    4.
    发明授权
    Silver-based ethylene oxide catalyst having reduced sodium content 有权
    具有降低的钠含量的银基环氧乙烷催化剂

    公开(公告)号：US09427729B2

    公开(公告)日：2016-08-30

    申请号：US14279826

    申请日：2014-05-16

    Applicant: Scientific Design Company, Inc.

    Inventor： Nabil Rizkalla ,  Andrzej Rokicki

    IPC: B01J23/50 ,  C07D301/10

    CPC classification number: B01J23/50 ,  C07D301/10 ,  Y02P20/52

    Abstract: A silver-based ethylene oxide catalyst that can be used in the vapor phase conversion of ethylene to ethylene oxide in the presence of oxygen is provided that includes a carrier; a catalytic effective amount of silver; and a promoting amount of at least one promoter, wherein the catalyst has a surface sodium content of 100 ppm or less.

    Abstract translation: 提供了可用于在氧存在下乙烯至环氧乙烷气相转化的银基环氧乙烷催化剂，其包括载体; 催化有效量的银; 和促进量的至少一种促进剂，其中催化剂的表面钠含量为100ppm以下。

    SILVER-BASED ETHYLENE OXIDE CATALYST HAVING REDUCED SODIUM CONTENT
    6.
    发明申请
    SILVER-BASED ETHYLENE OXIDE CATALYST HAVING REDUCED SODIUM CONTENT 有权
    具有降低的钠含量的基于银的乙烯氧化物催化剂

    公开(公告)号：US20140343308A1

    公开(公告)日：2014-11-20

    申请号：US14279826

    申请日：2014-05-16

    Applicant: Scientific Design Company, Inc.

    Inventor： Nabil Rizkalla ,  Andrzej Rokicki

    IPC: B01J23/50 ,  C07D301/10 ,  B01J21/04

    CPC classification number: B01J23/50 ,  C07D301/10 ,  Y02P20/52

    Abstract: A silver-based ethylene oxide catalyst that can be used in the vapor phase conversion of ethylene to ethylene oxide in the presence of oxygen is provided that includes a carrier; a catalytic effective amount of silver; and a promoting amount of at least one promoter, wherein the catalyst has a surface sodium content of 100 ppm or less.

    Abstract translation: 提供了可用于在氧存在下乙烯至环氧乙烷气相转化的银基环氧乙烷催化剂，其包括载体; 催化有效量的银; 和促进量的至少一种促进剂，其中催化剂的表面钠含量为100ppm以下。

    High concentration silver solutions for ethylene oxide catalyst preparation
    8.
    发明授权
    High concentration silver solutions for ethylene oxide catalyst preparation 有权

    公开(公告)号：US10300462B2

    公开(公告)日：2019-05-28

    申请号：US14575035

    申请日：2014-12-18

    Applicant: Scientific Design Company, Inc.

    Inventor： Lixin Cao ,  Andrzej Rokicki

    IPC: B01J23/48 ,  B01J23/50 ,  B01J23/68 ,  B01J37/02 ,  B01J37/06 ,  B01J31/00 ,  B01J35/10

    Abstract: A silver impregnation solution comprising: (i) silver ions, (ii) a silver concentration enhancer selected from at least one ammonium salt having an anionic component that is thermally decomposable; or at least one amino acid, or a combination thereof, (iii) at least one organic amine; and (iv) water; wherein said components (i)-(iii) are dissolved in said impregnation solution, and oxalic acid may or may not be included. The silver impregnation solution can achieve significantly higher silver concentrations, including at least or above 33, 34, or 35 wt %. Methods for producing a silver catalyst by silver impregnation of a refractory support followed by calcination are also described. The resulting silver catalysts possess high silver loadings of typically at least 17, 18, or 19 wt %.

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