Attrition resistant gamma-alumina catalyst support

    公开(公告)号:US20040214904A1

    公开(公告)日:2004-10-28

    申请号:US10851379

    申请日:2004-05-21

    Abstract: A method for reducing catalyst attrition losses in hydrocarbon synthesis processes conducted in high agitation reaction systems; a method of producing an attrition-resistant catalyst; a catalyst produced by such method; a method of producing an attrition-resistant catalyst support; and a catalyst support produced by such method. The inventive method of reducing catalyst attrition losses comprises the step of reacting a synthesis gas in a high agitation reaction system in the presence of a catalyst. In one aspect, the catalyst preferably comprises a null-alumina support including an amount of titanium effective for increasing the attrition resistance of the catalyst. In another aspect, the catalyst preferably comprises a null-alumina support which has been treated, after calcination, with an acidic, aqueous solution. The acidic aqueous solution preferably has a pH of not more than about 5. In another aspect, the catalyst preferably comprises cobalt on a null-alumina support wherein the cobalt has been applied to the null-alumina support by totally aqueous, incipient wetness-type impregnation. In another aspect, the catalyst preferably comprises cobalt on a null-alumina support with an amount of a lanthana promoter effective for increasing the attrition resistance of the catalyst. In another aspect, the catalyst preferably comprises a null-alumina support produced from boehmite having a crystallite size, in the 021 plane, in the range of from about 30 to about 55 nullngstrons. In another aspect, the inventive method of producing an attrition-resistant catalyst comprises the step of treating a null-alumina support, after calcination of and before adding catalytic material to the support, with an acidic solution effective for increasing the attrition resistance of the catalyst. In another aspect, the inventive method of producing an attrition-resistant catalyst support comprises the step of treating calcined null-alumina with an acidic, aqueous solution effective for increasing the attrition resistance of the null-alumina.

    Method for regenerating solid catalyst
    3.
    发明申请
    Method for regenerating solid catalyst 失效
    再生固体催化剂的方法

    公开(公告)号:US20040082800A1

    公开(公告)日:2004-04-29

    申请号:US10471421

    申请日:2003-09-11

    Abstract: A process for regenerating a solid catalyst which has been used for producing propylene oxide through an epoxidation reaction of propylene with an organic peroxide in a reactor packed with the solid catalyst, which comprises allowing a liquid to flow through the catalyst packed in the reactor at a temperature not lower than the maximum reaction temperature of the epoxidation reaction. According to the present invention, a catalyst can be regenerated with extremely high efficiency without taking the catalyst to be regenerated out of the reactor.

    Abstract translation: 一种在填充有固体催化剂的反应器中通过丙烯与有机过氧化物的环氧化反应生产环氧丙烷的固体催化剂再生方法,该方法包括使液体以包含在反应器中的催化剂流过 温度不低于环氧化反应的最大反应温度。 根据本发明,催化剂可以以非常高的效率再生,而不用将催化剂从反应器中再生出来。

    Spotting pattern for placement of compounds in an array
    5.
    发明申请
    Spotting pattern for placement of compounds in an array 审中-公开
    将化合物放置在阵列中的斑点图案

    公开(公告)号:US20040091941A1

    公开(公告)日:2004-05-13

    申请号:US10638275

    申请日:2003-08-08

    CPC classification number: G01N33/543

    Abstract: A plurality of samples of different substances are tested for their ability to enhance or inhibit a biological process. The samples are deposited on a supporting surface, such as a ChemCard, in an array comprising at least two dots of each sample, wherein at least one of the dots of each sample is at least a predetermined distance from at least one of the dots of each of the plurality of samples. One or more assay reagents in a gel sheet, for example, are then brought in contact with the compounds and reactions with certain of the compounds are evident as the active compounds diffuse into the one or more assay reagents. The concept of having unique neighbors for each occurrence of a dot allows the definitive correlation of active compounds with the dot (and the compound) that caused the biological activity.

    Abstract translation: 测试多种不同物质的样品的增强或抑制生物过程的能力。 将样品以包含每个样品的至少两个点的阵列沉积在诸如ChemCard的支撑表面上,其中每个样品的至少一个点与至少一个点的至少一个点 每个样本。 然后将凝胶片中的一种或多种测定试剂与化合物接触,并且随着活性化合物扩散入一种或多种测定试剂,与某些化合物的反应是显而易见的。 每个出现点的独特邻居的概念允许活性化合物与导致生物活性的点(和化合物)的确定相关性。

    Method of loading moist, sticky bulk material into a fluid pervious container
    6.
    发明申请
    Method of loading moist, sticky bulk material into a fluid pervious container 失效
    将潮湿,粘稠的散装材料装入流体可渗透的容器中的方法

    公开(公告)号:US20030017934A1

    公开(公告)日:2003-01-23

    申请号:US10135550

    申请日:2002-04-30

    CPC classification number: B01J8/003 B01J2208/00752 B01J2219/32466 C02F1/687

    Abstract: Method of dispensing moist, sticky or statically charged bulk material into a fluid pervious container having an opening for receiving said bulk material, which comprises conveying a bulk material, as a suspension or dispersion in a fluid, from a reservoir, and introducing said suspension or dispersion into the fluid-pervious container through said opening in the container to pass the fluid component of the suspension or dispersion through and out of the fluid-pervious container while the retaining the bulk material within the container, and recirculating the fluid to the reservoir.

    Abstract translation: 将潮湿,粘性或静态充填的散装材料分配到具有用于接收所述散装材料的开口的流体可渗透容器中的方法,其包括从容器输送散装材料作为流体中的悬浮液或分散体,并将所述悬浮液或 通过容器中的所述开口将液体渗透的容器分散,以将悬浮液或分散体的流体组分通过和流出可渗透流体的容器,同时将散装材料保持在容器内,并将流体再循环到储存器中。

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