Preparation of methylamines using shape selective chabazites
    13.
    发明授权
    Preparation of methylamines using shape selective chabazites 失效
    使用形状选择性菱沸石制备甲胺

    公开(公告)号:US5399769A

    公开(公告)日:1995-03-21

    申请号:US253872

    申请日:1994-06-03

    IPC分类号: C07C209/16

    CPC分类号: C07C209/16

    摘要: This invention relates to a process for producing a nonequilibrium distribution of methylamines by the catalyzed reaction of methanol and/or dimethyl ether with ammonia and by the catalytic reforming of a methylamine containing feedstock. One process selectively affords a reaction product enriched in mono and dimethylamines and low in trimethylamine, at high conversion of methanol or dimethylether. A variation of the process effects reforming a methylamine containing feedstock, optionally containing ammonia over a catalyst. The key to achieving this low TMA selectivity at high conversion resides in the use of a microporous zeolite, preferably chabazite, catalyst having a geometric selectivity index (GSI) less about 3, a shape selectivity index (SSI) greater than about 5 and a sorption capacity for 1-PrOH of at least 0.5 mmol/g.

    摘要翻译: 本发明涉及通过甲醇和/或二甲醚与氨的催化反应和含甲胺原料的催化重整来生产甲胺的非平衡分布的方法。 在甲醇或二甲醚的高转化率下,一种方法选择性地提供富含单胺和二甲胺和低三甲胺的反应产物。 重整含甲胺原料的工艺效果的变化,任选地在催化剂上含有氨。 在高转化率下实现这种低TMA选择性的关键在于使用微孔沸石,优选菱沸石,几何选择性指数(GSI)小于约3,大于约5的形状选择性指数(SSI)和吸附 1-PrOH的容量至少为0.5mmol / g。