Pyridine/picoline production process
    8.
    发明授权
    Pyridine/picoline production process 失效
    吡啶/甲基吡啶生产工艺

    公开(公告)号:US5969143A

    公开(公告)日:1999-10-19

    申请号:US2363

    申请日:1997-12-31

    摘要: There is provided a high efficiency base synthesis process for shape selective production of pyridine and picoline products from ammonia and C.sub.1-5 carbonyl compounds. The process includes reacting ammonia and at least one C.sub.1-5 carbonyl reactant under suitable reaction conditions of temperature, pressure, and space velocity in the presence of a catalyst comprising a molecular sieve to produce a primary product comprising pyridine or picoline products and polyalkylpyridines or other higher molecular weight aromatic species, separating and collecting the pyridine or picoline products from the polyalkylpyridines or other higher molecular weight aromatic species, and circulating the polyalkylpyridines or other higher molecular weight aromatic species to the same or another catalyst under conversion conditions to yield additional pyridine or picoline products with substantially reduced amounts of polyalkylpyridines or other higher molecular weight aromatic species.

    摘要翻译: 提供了一种从氨和C 1-5羰基化合物形成选择性生产吡啶和甲基吡啶产物的高效碱基合成方法。 该方法包括在包含分子筛的催化剂存在下,在温度,压力和空间速度的合适反应条件下使氨和至少一种C 1-5羰基反应物反应,以产生包含吡啶或甲基吡啶产物和聚烷基吡啶或其它 较高分子量的芳族物质,从聚烷基吡啶或其它较高分子量的芳族物质中分离和收集吡啶或甲基吡啶产物,并将多烷基吡啶或其它较高分子量的芳族物质在转化条件下循环至相同或另一种催化剂,以产生额外的吡啶或 具有大量减少量的聚烷基吡啶或其它较高分子量芳族物质的甲基吡啶产物。