Process for the manufacture of pyridine in high yield and selectivity
during a prolonged period of operation
    1.
    发明授权
    Process for the manufacture of pyridine in high yield and selectivity during a prolonged period of operation 失效
    在长时间操作期间以高产率和选择性制造吡啶的方法

    公开(公告)号:US4866179A

    公开(公告)日:1989-09-12

    申请号:US202386

    申请日:1988-06-06

    CPC分类号: C07D213/08 C07D213/10

    摘要: An improved method of catalytic gaseous chemical synthesis of pyridine by reaction of ammonia and a carbonyl compound, preferably with added hydrogen, is described herein. The process employs as the catalyst a crystalline aluminosilicate zeolite which has been ion exchanged with a Group VIII metal of the Periodic Table. The preferred metal is palladium. Suitably, the Group VIII metal is present in an amount of about 0.01% to 5% by weight of the catalyst, preferably 0.1% to 2%. The crystalline aluminosilicate zeolite catalyst suitably has a silica to alumina mole rate of at least 15, preferably 30 to 200, and optimally, about 120 to 150. The process of the invention provides a high and selective yield of pyridine over a prolonged reaction period, and affords facile restorability of the catalyst.

    摘要翻译: 本文描述了通过氨和羰基化合物的反应,优选与加入的氢反应来催化气化学合成吡啶的改进方法。 该方法使用与元素周期表第Ⅷ族金属离子交换的结晶硅铝酸盐沸石作为催化剂。 优选的金属是钯。 合适地,VIII族金属的存在量为催化剂重量的约0.01%至5%,优选为0.1%至2%。 结晶硅铝酸盐沸石催化剂适当地具有至少15,优选30至200,最佳为约120至150的二氧化硅与氧化铝的摩尔比。本发明的方法在延长的反应时间内提供高和选择性的吡啶产率, 并提供催化剂的容易恢复性。

    Process for preparing 1,4-butanediol
    2.
    发明授权
    Process for preparing 1,4-butanediol 失效
    制备1,4-丁二醇的方法

    公开(公告)号:US5426250A

    公开(公告)日:1995-06-20

    申请号:US237333

    申请日:1994-05-03

    IPC分类号: C07C29/16 C07C31/20 C07C27/04

    CPC分类号: C07C31/20 C07C29/16 C12C11/02

    摘要: 1,4-butanediol is prepared from allyl alcohol containing allyl acetate and water. The allyl alcohol is subjected to a hydroformylation reaction in the presence of an organic solvent, a rhodium complex, and a phosphorous compound under an atmosphere of carbon monoxide and hydrogen, to produce a hydroformylation product, which is extracted with an alkaline aqueous solution in the presence of carbon monoxide and/or hydrogen. After the extraction, an extracted raffinate solution containing the rhodium complex in the organic solvent is recycled through the same hydroformylation process, while the extracted aqueous solution containing the hydroformylation product is subjected to a hydrogenation reaction in the presence of hydrogen, with a hydrogenation catalyst added, to produce 1,4-butanediol.

    摘要翻译: 由含烯丙基乙酸酯和水的烯丙醇制备1,4-丁二醇。 烯丙醇在一氧化碳和氢气气氛下,在有机溶剂,铑络合物和磷化合物的存在下进行加氢甲酰化反应,生成加氢甲酰化产物,其用碱性水溶液萃取 存在一氧化碳和/或氢气。 提取后,通过相同的加氢甲酰化方法将含有有机溶剂中的铑络合物的提取的残液溶液再循环,同时将含有加氢甲酰化产物的萃取水溶液在氢的存在下进行氢化反应,加入氢化催化剂 ,生产1,4-丁二醇。