HIGH PURITY TABLETED ALPHA-ALUMINA CATALYST SUPPORT

    公开(公告)号:WO2022268348A1

    公开(公告)日:2022-12-29

    申请号:PCT/EP2021/083130

    申请日:2021-11-26

    Applicant: BASF SE

    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.

    CATALYST FOR PRODUCING ETHYLENE OXIDE BY GAS-PHASE OXIDATION

    公开(公告)号:WO2020078657A1

    公开(公告)日:2020-04-23

    申请号:PCT/EP2019/075187

    申请日:2019-09-19

    Applicant: BASF SE

    Abstract: A shaped catalyst body for producing ethylene oxide by gas-phase oxidation of ethylene, comprising silver deposited on a porous refractory support, the shaped catalyst body having a first face side surface, a second face side surface and a circumferential surface, characterized by a content of at least 20 wt.-% of silver, relative to the total weight of the shaped catalyst body; a multilobe structure; a plurality of passageways extending from the first face side surface to the second face side surface, outer passageways being arranged around a central passageway with one outer passageway being assigned to each lobe, wherein neighboring outer passageways are arranged essentially equidistantly to each other and the outer passageways are arranged essentially equidistantly to the central passageway; a minimum wall thickness A between two neighboring passageways in the range of 0.6 to 1.3 mm; a minimum wall thickness B between each outer passageway and the circumferential surface in the range of 1.1 to 1.8 mm; and a BET surface area in the range of 1.6 to 3.0 m 2 /g. The shaped catalyst bodies allow for a favorable balance between mechanical stability, pressure drop and selectivity. 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 a shaped catalyst body as defined above. The invention further relates to a process for preparing a shaped catalyst body as above, comprising i) impregnating a refractory support having a BET surface area in the range of 1.4 to 2.5 m 2 /g with a silver impregnation solution; and ii) subjecting the impregnated refractory support to a calcination process; wherein steps i) and ii) are optionally repeated.

    CATALYST FOR THE OXIDATION OF ETHYLENE TO ETHYLENE OXIDE
    7.
    发明申请
    CATALYST FOR THE OXIDATION OF ETHYLENE TO ETHYLENE OXIDE 审中-公开
    乙烯氧化成环氧乙烷的催化剂

    公开(公告)号:WO2018029189A1

    公开(公告)日:2018-02-15

    申请号:PCT/EP2017/070054

    申请日:2017-08-08

    Applicant: BASF SE

    Abstract: The present invention is directed to a shaped catalyst body for preparing ethylene oxide, which comprises at least silver, cesium and rhenium applied to an alumina support, wherein the alumina support comprises Si, Ca, and Mg in a defined amount. Furthermore, the present invention is directed to a process for preparing the catalyst according to the present invention and process for preparing ethylene oxide by gas-phase oxidation of ethylene by means of oxygen in the presence of a shaped catalyst body according to the present invention.

    Abstract translation: 本发明涉及一种用于制备环氧乙烷的成型催化剂体,其至少包含施加到氧化铝载体上的银,铯和铼,其中氧化铝载体包含在其中的Si,Ca和Mg 一个确定的数量。 此外,本发明涉及制备根据本发明的催化剂的方法和通过根据本发明在催化剂成型体存在下通过氧气气相氧化制备环氧乙烷的方法。

    VERFAHREN ZUR HERSTELLUNG VON HALBLEITENDEN SCHICHTEN
    10.
    发明申请
    VERFAHREN ZUR HERSTELLUNG VON HALBLEITENDEN SCHICHTEN 审中-公开
    用于生产半导体层

    公开(公告)号:WO2010125011A2

    公开(公告)日:2010-11-04

    申请号:PCT/EP2010/055499

    申请日:2010-04-26

    Abstract: Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung einer Schicht enthaltend wenigstens ein halbleitendes Metalloxid auf einem Substrat, umfassend mindestens die Schritte: (A) Herstellen einer Lösung enthaltend wenigstens eine Vorläuferverbindung des wenigstens einen Metalloxids ausgewählt aus der Gruppe bestehend aus Carboxylaten von Mono-, Di- oder Polycarbonsäuren mit wenigstens drei Kohlenstoffatomen oder Derivaten von Mono-, Di- oder Polycarbonsäuren, Alkoholaten, Hydroxiden, Semicarbaziden, Carbaminaten, Hydroxamaten, Isocyanaten, Amidinen, Amidrazonen, Harnstoffderivaten, Hydroxylaminen, Oximen, Urethanen, Ammoniak, Aminen, Phosphinen, Ammonium-Verbindungen,, Aziden des entsprechenden Metalls und Mischungen davon, in wenigstens einem Lösungsmittel, (B) Aufbringen der Lösung aus Schritt (A) auf das Substrat und (C) thermisches Behandeln des Substrates aus Schritt (B) bei einer Temperatur von 20 bis 200°C, um die wenigstens eine Vorläuferverbindung in wenigstens ein halbleitendes Metalloxid zu überführen, wobei, falls in Schritt (A) elektrisch neutrales [(OH) x (NH 3 ) y Zn] z mit x, y und z unabhängig voneinander 0,01 bis 10, als Vorläuferverbindung eingesetzt wird, dieses durch Umsetzung von Zinkoxid oder Zinkhydroxid mit Ammoniak erhalten wird, ein Substrat, welches mit wenigstens einem halbleitenden Metalloxid beschichtet ist, erhältlich durch dieses Verfahren, die Verwendung dieses Substrates in elektronischen Bauteilen, sowie ein Verfahren zur Herstellung von elektrisch neutralem [(OH) x (NH 3 ) y Zn] z mit x, y und z unabhängig voneinander 0,01 bis 10, durch Umsetzung von Zinkoxid und/oder Zinkhydroxid mit Ammoniak.

    Abstract translation: 本发明涉及一种方法,用于制造至少包括以下步骤:在基材上含有至少一个半导电金属氧化物的层:(A)制备含有选自单 - 羧酸盐组成的组中的至少一种金属氧化物的至少一种前体化合物的溶液中,二 - 或者具有至少三个碳原子,或单 - ,二 - 或多元羧酸,醇化物,氢氧化物,氨基脲衍生物的多羧酸,Carbaminaten,异羟肟酸盐,异氰酸酯,脒,氨基腙,脲衍生物,羟胺,肟,氨基甲酸乙酯,氨,胺,膦,铵 化合物,,相应金属的叠氮化物和它们的混合物,在至少一种溶剂中,(B)将来自步骤溶液(a)以20〜200的温度的基板和(C)热处理步骤(B)的基板 ℃,在wenigst所述至少一种前体化合物 到ENS转换半导体金属氧化物,其中,如果在步骤(A)是电中性的[(OH)X(NH 3)YZN】Z,其中x,y和z,各自独立地选自0.01通过使用10作为前体化合物,即 涂有至少一个半导电金属氧化物的基板,获得通过该方法,使用该基板的电子部件,以及用于产生电中性的方法[(OH)由氧化锌或者与氨,X氢氧化锌得到的(NH 3) YZN】Z,其中x,y和z独立地是从0.01到10,由氧化锌和/或氢氧化锌与氨反应。

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