Method of selectively synthesizing triethylenediamine
    32.
    发明授权
    Method of selectively synthesizing triethylenediamine 失效
    选择性合成三亚乙基二胺的方法

    公开(公告)号:US06958397B2

    公开(公告)日:2005-10-25

    申请号:US10482644

    申请日:2002-07-04

    摘要: The present invention describes a process for the preparation of triethylenediamine by reacting piperazine over a zeolite catalyst which, in addition to SiO2, contains an oxide of at least one further divalent, trivalent or tetravalent metal M, wherein the zeolite has a molar Si/M ratio of >100. In particular, a zeolite of the ZSM-5 type is used. The use of the zeolites permits suppression of the undesired formation of the byproduct 2-ethylpiperazine and hence considerable simplification of the working-up, in combination with high piperazine conversions and a small excess of water.

    摘要翻译: 本发明描述了一种通过哌嗪在沸石催化剂上反应制备三亚乙基二胺的方法,该沸石催化剂除SiO 2外还含有至少另外一种二价,三价或四价金属M的氧化物,其中 沸石的Si / M摩尔比> 100。 特别地,使用ZSM-5型的沸石。 沸石的使用允许抑制副产物2-乙基哌嗪的不期望的形成,因此相当简化的加工,加上高哌嗪转化率和少量过量的水。

    Method for Preparing Aminodiglycol (Adg) and Morpholine
    35.
    发明申请
    Method for Preparing Aminodiglycol (Adg) and Morpholine 审中-公开
    制备氨基二甘醇(Adg)和吗啉的方法

    公开(公告)号:US20080255351A1

    公开(公告)日:2008-10-16

    申请号:US12088718

    申请日:2006-09-25

    IPC分类号: C07D265/30

    摘要: Processes comprising: providing a starting material comprising diethylene glycol; and reacting the starting material with ammonia in the presence of a heterogeneous transition metal catalyst to form a reaction product comprising aminodiglycol and morpholine; wherein the catalyst comprises a catalytically active composition, which prior to treatment with hydrogen, comprises a mixture of oxygen-containing compounds of copper, nickel, cobalt and at least one of aluminum and zirconium; and wherein the catalyst is present as one or more shaped catalyst particles selected from spheres, extrudates, pellets and other geometries, wherein the sphere or extradate has a diameter of

    摘要翻译: 方法包括:提供包含二甘醇的原料; 并在非均相过渡金属催化剂存在下使原料与氨反应形成包含氨基二甘醇和吗啉的反应产物; 其中所述催化剂包含催化活性组合物,其在用氢处理之前包含铜,镍,钴和铝和锆中的至少一种的含氧化合物的混合物; 并且其中所述催化剂作为选自球体,挤出物,丸粒和其它几何形状的一种或多种成型催化剂颗粒存在,其中所述球体或引体具有<3mm的直径,所述颗粒具有<3mm的高度,而另一个 几何形状具有等效直径L = 1 / a'<0.70mm,其中a'是每单位体积的外表面积(mm×s×2 / 由 定义的 3 MI> a = A / MSUB> V p 其中A < SUB>是催化剂颗粒的外表面积(mm 2),V p是催化剂颗粒的体积(mm 3) 3&lt; 3&gt; 3&lt; 3&gt;)。

      Process for distillatively removing piperazine from an ethylenediamine-piperazine mixture
      36.
      发明申请
      Process for distillatively removing piperazine from an ethylenediamine-piperazine mixture 有权
      从乙二胺 - 哌嗪混合物中蒸馏除去哌嗪的方法

      公开(公告)号:US20070037980A1

      公开(公告)日:2007-02-15

      申请号:US11494733

      申请日:2006-07-28

      IPC分类号: C07D241/04

      CPC分类号: C07D295/00

      摘要: The invention relates to a process for continuously, distillatively removing piperazine from an ethylenediamine-piperazine mixture under pressure at elevated temperature, by discharging the ethylenediamine at the top and the piperazine at the bottom of a distillation column. For the purpose of improving the quality of the piperazine, especially its color and color stability, the piperazine is subjected directly to circulation conveying it through an evaporator unit operated at a temperature of from about 160° C. to about 170° C. and returning it into the distillation column. After a residence time of from about 30 min to about 60 min in the circulation system, the piperazine is discharged in vapor form from a side draw in the lower section of the distillation column.

      摘要翻译: 本发明涉及一种在高温压力下从乙二胺 - 哌嗪混合物中连续蒸馏除去哌嗪的方法,通过排出顶部的乙二胺和蒸馏塔底部的哌嗪。 为了提高哌嗪的质量,特别是其颜色和颜色稳定性,哌嗪直接进行循环,将其通过在约160℃至约170℃的温度下操作的蒸发器单元输送,并返回 进入蒸馏塔。 在循环系统中约30分钟至约60分钟的停留时间后,哌嗪从蒸馏塔下部的侧馏分以蒸汽形式排出。