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    PROCESS FOR PREPARING ACRYLIC ACID WITH HIGH SPACE-TIME YIELD
    31.
    发明申请
    PROCESS FOR PREPARING ACRYLIC ACID WITH HIGH SPACE-TIME YIELD 审中-公开
    制备具有高空间时间的丙烯酸的方法

    公开(公告)号：US20140343319A1

    公开(公告)日：2014-11-20

    申请号：US14277414

    申请日：2014-05-14

    Applicant: BASF SE

    Inventor： Michael GOEBEL ,  Christian Walsdorff ,  Marco Hartmann ,  Nicolai Tonio Woerz ,  Tim Blaschke ,  Philipp Gruene

    IPC: C07C51/377

    CPC classification number: C07C51/377 ,  C07C51/353 ,  C07C57/04

    Abstract: In a process for preparing acrylic acid, a reaction gas which comprises a gaseous formaldehyde source and gaseous acetic acid and in which the partial pressure of the formaldehyde source, calculated as formaldehyde equivalents, is at least 85 mbar and in which the molar ratio of the acetic acid to the formaldehyde source, calculated as formaldehyde equivalents, is at least 1 is contacted with a solid condensation catalyst. The space-time yield can be enhanced significantly by increasing the partial pressure of the reactants. The space-time yield remains high even after prolonged process duration.

    Abstract translation: 在制备丙烯酸的方法中，包含气态甲醛源和气态乙酸的反应气体，其中以甲醛当量计算的甲醛源的分压为至少85毫巴，其中摩尔比 乙酸至甲醛源，以甲醛当量计算，至少1与固体缩合催化剂接触。 通过增加反应物的分压可以显着提高时空产率。 即使延长工艺持续时间，空时产量仍然很高。

    Process for the Oxidative Dehydrogenation of N-Butenes to Butadiene
    34.
    发明申请
    Process for the Oxidative Dehydrogenation of N-Butenes to Butadiene 审中-公开
    丁烯丁二烯氧化脱氢工艺

    公开(公告)号：US20140163290A1

    公开(公告)日：2014-06-12

    申请号：US14097416

    申请日：2013-12-05

    Applicant: BASF SE

    Inventor： Philipp Grüne ,  Wolfgang Rüttinger ,  Christian Walsdorff

    IPC: C07C5/48

    CPC classification number: C07C5/48 ,  B01J23/882 ,  B01J23/94 ,  B01J37/0009 ,  B01J37/0045 ,  B01J37/031 ,  B01J37/08 ,  B01J38/02 ,  B01J38/12 ,  B01J38/14 ,  B01J2523/00 ,  C07C2521/06 ,  C07C2523/04 ,  C07C2523/18 ,  C07C2523/26 ,  C07C2523/28 ,  C07C2523/745 ,  C07C2523/75 ,  C07C2523/887 ,  Y02P20/584 ,  C07C11/167 ,  B01J2523/13 ,  B01J2523/41 ,  B01J2523/54 ,  B01J2523/67 ,  B01J2523/68 ,  B01J2523/842 ,  B01J2523/845

    Abstract: The invention relates to a process for the oxidative dehydrogenation of n-butenes to butadiene, which comprises two or more production steps (i) and at least one regeneration step (ii), in which (i) in one production step, a starting gas mixture comprising n-butenes is mixed with an oxygen-comprising gas and brought into contact with a multimetal oxide catalyst which comprises at least molybdenum and a further metal and is arranged in a fixed catalyst bed in a fixed-bed reactor at a temperature of from 220 to 490° C., and, before the relative decrease in conversion at constant temperature is >25%, (ii) in a regeneration step, the multimetal oxide catalyst is regenerated by passing an oxygen-comprising regeneration gas mixture at a temperature of from 200 to 450° C. over the fixed catalyst bed and burning off the carbon deposited on the catalyst, where a regeneration step (ii) is carried out between two production steps (i), wherein from 2 to 50% by weight of the carbon deposited on the catalyst is burnt off per regeneration step (ii).

    Abstract translation: 本发明涉及一种将丁烯氧化脱氢成丁二烯的方法，其包括两个或多个制备步骤（i）和至少一个再生步骤（ii），其中（i）在一个制备步骤中，将起始气体 将包含正丁烯的混合物与含氧气体混合并与至少包含钼和另外的金属的多金属氧化物催化剂接触，并且在固定床反应器中的固定催化剂床中以 220至490℃，并且在恒温下的转化率相对降低> 25％之前，（ii）在再生步骤中，通过使含氧再生气体混合物在 在固定的催化剂床上200至450℃，并将沉积在催化剂上的碳烧掉，其中在两个生产步骤（i）之间进行再生步骤（ii），其中按重量计为2-50％ 碳沉积在t上 在每个再生步骤（ii）中催化剂被烧掉。

    PREPARING CERIUM(III) COMPOUNDS
    35.
    发明申请
    PREPARING CERIUM(III) COMPOUNDS 审中-公开
    制备CERIUM（III）化合物

    公开(公告)号：US20130109563A1

    公开(公告)日：2013-05-02

    申请号：US13661706

    申请日：2012-10-26

    Applicant: BASF SE

    Inventor： Nils Bottke ,  Markus Schubert ,  Markus Ruf ,  Christian Walsdorff

    IPC: B01J23/83 ,  C22B59/00 ,  B01J23/745

    CPC classification number: B01J37/031 ,  B01J23/002 ,  B01J23/83 ,  B01J35/023 ,  B01J37/0009 ,  B01J37/0036 ,  B01J2523/00 ,  C01F17/0018 ,  C07D233/32 ,  C07D487/04 ,  C22B59/00 ,  B01J2523/13 ,  B01J2523/3712 ,  B01J2523/842

    Abstract: The invention relates to a process for preparing cerium(III) compounds which comprises the steps of a) contacting a starting composition A comprising cerium dioxide and at least one further metal oxide selected from the group consisting of iron oxide, silicon dioxide, molybdenum oxide, lanthanum oxide, magnesium oxide and calcium oxide with at least one acid S and at least one iron component E comprising iron in the oxidation state 0 and/or II at a temperature ranging from 40 to 160° C. and at a pH of not more than 2 to obtain a solution L comprising cerium in the oxidation state III; b) adding at least one basic compound C to said solution L to obtain a solid F comprising at least one cerium(III) compound; c) separating off said solid F comprising at least one cerium(III) compound.

    Abstract translation: 本发明涉及一种制备铈（III）化合物的方法，其包括以下步骤：a）使包含二氧化铈和至少一种另外的金属氧化物的起始组合物A与氧化铁，二氧化硅，氧化钼， 氧化镧，氧化镁和氧化钙与至少一种酸S和至少一种含有氧化态0和/或II的铁的铁组分E在40至160℃的温度和不超过pH 以获得包含处于氧化态III的铈的溶液L; b）向所述溶液L中加入至少一种碱性化合物C以获得包含至少一种铈（III）化合物的固体F; c）分离包含至少一种铈（III）化合物的所述固体F。

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