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    PROCESS FOR PREPARING ACRYLIC ACID WITH HIGH SPACE-TIME YIELD
    1.
    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

    申请人： BASF SE

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

    IPC分类号： C07C51/377

    CPC分类号： C07C51/377 ,  C07C51/353 ,  C07C57/04

    摘要： 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.

    摘要翻译： 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 PREPARING ACRYLIC ACID USING AN ALKALI METAL-FREE AND ALKALINE EARTH METAL-FREE ZEOLITIC MATERIAL
    2.
    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

    申请人： BASF SE

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

    IPC分类号： C07C51/347

    CPC分类号： C07C51/347 ,  B01J29/82 ,  B01J29/83 ,  B01J29/84 ,  B01J29/85 ,  C07C51/353 ,  C07C2529/82 ,  C07C2529/83 ,  C07C2529/84 ,  C07C2529/85 ,  C07C57/04

    摘要： 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.

    摘要翻译： 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。