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    START-UP PROCESS FOR HIGH SELECTIVITY ETHYLENE OXIDE CATALYSTS
    2.
    发明申请
    START-UP PROCESS FOR HIGH SELECTIVITY ETHYLENE OXIDE CATALYSTS 有权
    用于高选择性乙氧基乙烷催化剂的启动方法

    公开(公告)号：US20140187807A1

    公开(公告)日：2014-07-03

    申请号：US14144752

    申请日：2013-12-31

    Applicant: Scientific Design Company, Inc.

    Inventor： Serguei Pak

    IPC: C07D301/10

    CPC classification number: C07D301/10

    Abstract: A high selectivity catalyst start-up process is provided in which an excess level of chloride moderator (greater than 1 ppm) is present in the feed gas composition during each of the various stages of the start-up process. The excess level of chloride used in the start-up process maintains a low level of selectivity (less than 86%) during the entire start-up process. Despite the low selectivity values achieved during the start-up process of the present disclosure, high selectivity catalysts that are conditioned by such a start-up process exhibit improved catalyst performance during the normal operation of the catalyst.

    Abstract translation: 提供了高选择性催化剂启动方法，其中在启动过程的各个阶段期间，进料气体组合物中存在过量的氯化物缓和剂（大于1ppm）。 在启动过程中使用的过量氯化物在整个启动过程中保持低水平的选择性（小于86％）。 尽管在本公开的启动过程中实现的低选择性值，通过这种启动方法调节的高选择性催化剂在催化剂的正常操作期间表现出改进的催化剂性能。

    Start-up process for high selectivity ethylene oxide catalysts
    3.
    发明授权
    Start-up process for high selectivity ethylene oxide catalysts 有权
    高选择性环氧乙烷催化剂的启动方法

    公开(公告)号：US09096563B2

    公开(公告)日：2015-08-04

    申请号：US14144752

    申请日：2013-12-31

    Applicant: Scientific Design Company, Inc.

    Inventor： Serguei Pak

    IPC: C07D301/10 ,  C07D301/03

    CPC classification number: C07D301/10

    Abstract: A high selectivity catalyst start-up process is provided in which an excess level of chloride moderator (greater than 1 ppm) is present in the feed gas composition during each of the various stages of the start-up process. The excess level of chloride used in the start-up process maintains a low level of selectivity (less than 86%) during the entire start-up process. Despite the low selectivity values achieved during the start-up process of the present disclosure, high selectivity catalysts that are conditioned by such a start-up process exhibit improved catalyst performance during the normal operation of the catalyst.

    Abstract translation: 提供了高选择性催化剂启动方法，其中在启动过程的各个阶段期间，进料气体组合物中存在过量的氯化物缓和剂（大于1ppm）。 在启动过程中使用的过量氯化物在整个启动过程中保持低水平的选择性（小于86％）。 尽管在本公开的启动过程中实现的低选择性值，通过这种启动方法调节的高选择性催化剂在催化剂的正常操作期间表现出改进的催化剂性能。

    Calcination process for producing an improved ethylene oxide catalyst
    4.
    发明授权
    Calcination process for producing an improved ethylene oxide catalyst 有权
    用于生产改进的环氧乙烷催化剂的煅烧方法

    公开(公告)号：US09067198B2

    公开(公告)日：2015-06-30

    申请号：US14144747

    申请日：2013-12-31

    Applicant: Scientific Design Company, Inc.

    Inventor： Serguei Pak

    IPC: B01J21/00 ,  B01J21/04 ,  B01J20/00 ,  B01J23/00 ,  B01J23/02 ,  B01J23/08 ,  B01J23/40 ,  B01J23/42 ,  B01J23/48 ,  B01J23/68

    CPC classification number: B01J23/688 ,  B01J21/04 ,  B01J23/50 ,  B01J23/66 ,  B01J37/0203 ,  B01J37/0213 ,  B01J37/08 ,  B01J37/18 ,  C07D301/10 ,  Y02P20/52

    Abstract: A method for producing a catalyst effective in the oxidative conversion of ethylene to ethylene oxide, the method comprising subjecting a refractory carrier impregnated with a liquid silver-containing solution to a calcination process, wherein the calcination process comprises a solvent removal step in which the silver-impregnated carrier is heated to a base temperature (Tbase) of at least 80° C. and up to about 200° C. to produce a dry carrier impregnated with ionic silver, followed by a silver reduction step in which the dry carrier is gradually heated above the base temperature to a maximum temperature (Tmax) of at least 350° C. and up to about 500° C. and then gradually cooled to the base temperature, wherein the method is conducted such that (Tbase−Tmax)×HW is at least 2000 min.° C. wherein HW is a full width at half maximum of a temperature versus time curve delineated by the silver reduction step.

    Abstract translation: 一种制备有效地将乙烯氧化成环氧乙烷的催化剂的方法，该方法包括使浸渍有含液体银的溶液的耐火材料载体进行煅烧过程，其中所述煅烧过程包括溶剂除去步骤，其中所述银 将浸渍的载体加热至至少80℃至高达约200℃的基础温度（Tbase），以产生用离子银浸渍的干燥载体，随后进行银还原步骤，其中干燥载体逐渐 在基础温度以上加热至最高温度（Tmax）至少350℃，最高约500℃，然后逐渐冷却至基体温度，其中进行方法为（Tbase-Tmax）×HW 是至少2000分钟。其中HW是通过银还原步骤描绘的温度对时间曲线的半峰全宽。

    CALCINATION PROCESS FOR PRODUCING AN IMPROVED ETHYLENE OXIDE CATALYST
    6.
    发明申请
    CALCINATION PROCESS FOR PRODUCING AN IMPROVED ETHYLENE OXIDE CATALYST 有权
    用于生产改进的乙烯氧化物催化剂的计算方法

    公开(公告)号：US20140187417A1

    公开(公告)日：2014-07-03

    申请号：US14144747

    申请日：2013-12-31

    Applicant: SCIENTIFIC DESIGN COMPANY, INC.

    Inventor： Serguei Pak

    IPC: B01J23/68

    CPC classification number: B01J23/688 ,  B01J21/04 ,  B01J23/50 ,  B01J23/66 ,  B01J37/0203 ,  B01J37/0213 ,  B01J37/08 ,  B01J37/18 ,  C07D301/10 ,  Y02P20/52

    Abstract: A method for producing a catalyst effective in the oxidative conversion of ethylene to ethylene oxide, the method comprising subjecting a refractory carrier impregnated with a liquid silver-containing solution to a calcination process, wherein the calcination process comprises a solvent removal step in which the silver-impregnated carrier is heated to a base temperature (Tbase) of at least 80° C. and up to about 200° C. to produce a dry carrier impregnated with ionic silver, followed by a silver reduction step in which the dry carrier is gradually heated above the base temperature to a maximum temperature (Tmax) of at least 350° C. and up to about 500° C. and then gradually cooled to the base temperature, wherein the method is conducted such that (Tbase−Tmax)×HW is at least 2000 min.° C. wherein HW is a full width at half maximum of a temperature versus time curve delineated by the silver reduction step.

    Abstract translation: 一种制备有效地将乙烯氧化成环氧乙烷的催化剂的方法，该方法包括使浸渍有含液体银的溶液的耐火材料载体进行煅烧过程，其中所述煅烧过程包括溶剂除去步骤，其中所述银 将浸渍的载体加热至至少80℃至高达约200℃的基础温度（Tbase），以产生用离子银浸渍的干燥载体，随后进行银还原步骤，其中干燥载体逐渐 在基础温度以上加热至最高温度（Tmax）至少350℃，最高约500℃，然后逐渐冷却至基体温度，其中进行方法为（Tbase-Tmax）×HW 是至少2000分钟。其中HW是通过银还原步骤描绘的温度对时间曲线的半峰全宽。

    Silver impregnation method for producing ethylene oxide catalyst with enhanced catalytic ability
    7.
    发明授权
    Silver impregnation method for producing ethylene oxide catalyst with enhanced catalytic ability 有权

    公开(公告)号：US10604497B2

    公开(公告)日：2020-03-31

    申请号：US15873125

    申请日：2018-01-17

    Applicant: SCIENTIFIC DESIGN COMPANY INC.

    Inventor： Serguei Pak

    IPC: C07D301/10 ,  B01J23/66 ,  C01G5/00

    Abstract: A method for producing a catalyst effective in the oxidative conversion of ethylene to ethylene oxide, the method comprising: (i) impregnating a porous refractory carrier with a sub-catalytic level of silver ion in a range of 0.1 wt % to 1 wt % of silver by weight of the carrier and silver, and at least partially reducing said silver ion to elemental silver to produce a low-silver catalyst precursor having isolated silver atoms or silver nanoparticles on surfaces of said refractory carrier; and (ii) further impregnating the low-silver catalyst precursor with a catalytic amount of silver ion of at least 10 wt % total amount of silver and at least one promoting species by weight of the carrier and silver, and subjecting the further impregnated carrier to an elevated temperature of at least 200° C. to completely reduce silver ion to elemental silver in the carrier. The low-silver catalyst precursor produced in step (i) is also described in detail. Methods for using the catalyst produced in step (ii) for the oxidative conversion of ethylene to ethylene oxide are also described.

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