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    HIGH PURITY TABLETED ALPHA-ALUMINA CATALYST SUPPORT
    3.
    发明公开
    HIGH PURITY TABLETED ALPHA-ALUMINA CATALYST SUPPORT 审中-公开

    公开(公告)号：US20240293802A1

    公开(公告)日：2024-09-05

    申请号：US18573474

    申请日：2021-11-26

    Applicant: BASF SE

    Inventor： Christian WALSDORFF ,  Sung Yeun CHOI ,  Andrey KARPOV ,  Kazuhiko AMAKAWA ,  Nicolas DUYCKAERTS

    IPC: B01J21/04 ,  B01J23/68 ,  B01J35/40 ,  B01J35/61 ,  B01J35/63 ,  B01J37/04 ,  B01J37/08 ,  C07D301/10

    CPC classification number: B01J21/04 ,  B01J23/688 ,  B01J35/40 ,  B01J35/612 ,  B01J35/633 ,  B01J37/04 ,  B01J37/08 ,  C07D301/10

    Abstract: A catalyst support comprising at least 85 wt.-% of alpha-alumina and having a pore volume of at least 0.40 mL/g, as determined by mercury porosimetry, and a BET surface area of 0.5 to 5.0 m2/g, wherein the catalyst support is a tableted catalyst support comprising, based on the total weight of the catalyst support, less than 500 ppmw of potassium. The invention moreover relates to a process for producing a tableted alpha-alumina catalyst support, which comprises i) forming a free-flowing feed mixture comprising i-a) at least one aluminum compound which is thermally convertible to alpha-alumina, the aluminum compound comprising a transition alumina and/or an alumina hydrate; and i-b) 30 to 120 wt.-%, relative to i-a), of a pore-forming material; ii) tableting the free-flowing feed mixture to obtain a compacted body; and iii) heat treating the compacted body at a temperature of at least 1100° C., to obtain the tableted alpha-alumina catalyst support. The invention further relates to a compacted body obtained by tableting a free-flowing feed mixture which comprises, relative to the total weight of the free-flowing feed mixture, a) at least one aluminum compound which is thermally convertible to alpha-alumina, the aluminum compound comprising a transition alumina and/or an alumina hydrate; and b) 30 to 120 wt.-%, relative to a), of a pore-forming material. The invention moreover relates to a shaped catalyst body for producing ethylene oxide by gas-phase oxidation of ethylene, comprising at least 12 wt.-% of silver, relative to the total weight of the catalyst, deposited on the tableted alpha-alumina catalyst support. The invention also relates to a process for producing ethylene oxide by gas-phase oxidation of ethylene, comprising reacting ethylene and oxygen in the presence of the shaped catalyst body. The invention allows for the use of specific pore-forming materials that are particularly suitable for obtaining an advantageous pore structure while allowing for a catalyst support having high purity.

    PROCESS FOR PREPARING ACRYLIC ACID USING AN ALKALI METAL-FREE AND ALKALINE EARTH METAL-FREE ZEOLITIC MATERIAL
    4.
    发明申请
    PROCESS FOR PREPARING ACRYLIC ACID USING AN ALKALI METAL-FREE AND ALKALINE EARTH METAL-FREE ZEOLITIC MATERIAL 有权
    使用无碱碱金属碱金属无碱金属材料制备丙烯酸的方法

    公开(公告)号：US20150344394A1

    公开(公告)日：2015-12-03

    申请号：US14724244

    申请日：2015-05-28

    Applicant: BASF SE

    Inventor： Andrei-Nicolae PARVULESCU ,  Armin LANGE DE OLIVEIRA ,  Stephan A. SCHUNK ,  Nicolai Tonio WOERZ ,  Marco HARTMANN ,  Kazuhiko AMAKAWA ,  Michael GOEBEL ,  Yong LIU ,  Michael LEJKOWSKI

    IPC: C07C51/347

    CPC classification number: C07C51/347 ,  B01J29/82 ,  B01J29/83 ,  B01J29/84 ,  B01J29/85 ,  C07C51/353 ,  C07C2529/82 ,  C07C2529/83 ,  C07C2529/84 ,  C07C2529/85 ,  C07C57/04

    Abstract: A process for preparing acrylic acid, comprising (i) providing a stream S4 comprising a formaldehyde source and acetic acid; (ii) contacting stream S4 with an aldol condensation catalyst comprising a zeolitic material comprising aluminum in the framework structure to obtain a stream S6 comprising acrylic acid, the framework structure of the zeolitic material in (ii) comprising YO2 and Al2O3, and Y being a tetravalent element; where the total content of alkali metal and alkaline earth metal in the zeolitic material in (ii), calculated as alkali metal oxide and alkaline earth metal oxide, is from 0% to 0.1% by weight, based in each case on the total weight of the zeolitic material, and where the aldol condensation catalyst in (ii) comprises, outside the framework structure of the zeolitic material present therein, from 0% to 1% by weight of vanadium, based on vanadium as vanadium(V) oxide.

    Abstract translation: 一种制备丙烯酸的方法，包括（i）提供包含甲醛源和乙酸的料流S4; （ii）使流体S4与包含框架结构中包含铝的沸石材料的醛醇缩合催化剂接触以获得包含丙烯酸的流S6，（ii）中的沸石材料的框架结构包含YO 2和Al 2 O 3，Y是 四价元素 其中（ii）中的沸石材料中的碱金属和碱土金属的总含量以碱金属氧化物和碱土金属氧化物计算为0〜0.1重量％，基于每种情况下的总重量 沸石材料，并且其中（ii）中的醛醇缩合催化剂在其中存在的沸石材料的骨架结构外包含以钒为氧化钒（V）的钒为0至1重量％的钒。

    TABLETED ALPHA-ALUMINA CATALYST SUPPORT
    7.
    发明公开
    TABLETED ALPHA-ALUMINA CATALYST SUPPORT 审中-公开

    公开(公告)号：US20230234030A1

    公开(公告)日：2023-07-27

    申请号：US18011857

    申请日：2021-06-25

    Applicant: BASF SE

    Inventor： Sung Yeun CHOI ,  Andrey KARPOV ,  Christian WALSDORFF ,  Nicolas DUYCKAERTS ,  Kazuhiko AMAKAWA ,  Patrick HUBACH ,  Karl C. KHARAS

    IPC: B01J21/04 ,  B01J23/50 ,  B01J23/36 ,  B01J35/02 ,  B01J35/10 ,  B01J35/00 ,  B01J37/04 ,  B01J37/00 ,  B01J37/08 ,  C07D301/10

    CPC classification number: B01J21/04 ,  B01J23/50 ,  B01J23/36 ,  B01J35/026 ,  B01J35/1038 ,  B01J35/1042 ,  B01J35/1009 ,  B01J35/1066 ,  B01J35/1061 ,  B01J35/0026 ,  B01J37/04 ,  B01J37/0063 ,  B01J37/0018 ,  B01J37/08 ,  C07D301/10

    Abstract: A tableted catalyst support, characterized by an alpha-alumina content of at least 85 wt.-%, a pore volume of at least 0.40 mL/g, as determined by mercury porosimetry, and a BET surface area of 0.5 to 5.0 m2/g. The tableted catalyst support is an alpha-alumina catalyst support obtained with high geometrical precision and displaying a high overall pore volume, thus allowing for impregnation with a high amount of silver, while exhibiting a surface area sufficiently large so as to provide optimal dispersion of catalytically active species, in particular metal species. The invention further provides a process for producing a tableted alpha-alumina catalyst support, which comprises i) forming a free-flowing feed mixture comprising, based on inorganic solids content, at least 50 wt.-% of a transition alumina; ii) tableting the free-flowing feed mixture to obtain a compacted body; and iii) heat treating the compacted body at a temperature of at least 1100° C., preferably at least 1300° C., more preferably at least 1400° C., in particular at least 1450° C., to obtain the tableted alpha-alumina catalyst support. The invention moreover relates to a compacted body obtained by tableting a free-flowing feed mixture which comprises, based on inorganic solids content, at least 50 wt.-% of a transition alumina having a loose bulk density of at most 600 g/L, a pore volume of at least 0.6 mL/g, as determined, and a median pore diameter of at least 15 nm. The invention moreover relates to a shaped catalyst body for producing ethylene oxide by gas-phase oxidation of ethylene, comprising at least 15 wt.-% of silver, relative to the total weight of the catalyst, deposited on the tableted alpha-alumina catalyst support. The invention moreover relates to a process for producing ethylene oxide by gas-phase oxidation of ethylene, comprising reacting ethylene and oxygen in the presence of the shaped catalyst body.

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