Method for producing lactams using oligophosphate catalysts
    13.
    发明授权
    Method for producing lactams using oligophosphate catalysts 失效
    使用寡磷酸酯催化剂生产内酰胺的方法

    公开(公告)号:US06407230B1

    公开(公告)日:2002-06-18

    申请号:US09646153

    申请日:2000-09-14

    CPC classification number: C07D277/32 B01J27/1804 C07D213/61

    Abstract: A process for preparing lactams by hydrolytic cyclization of aminonitriles in the gas phase in the presence of a metal phosphate catalyst comprises using a catalyst comprising one or more oligophosphates of the general formula (I) M (POa)b  (I) where M is a metal of group 3 or 4 of the periodic table, including the lanthanides, a is >2.5 and

    Abstract translation: 在金属磷酸盐催化剂的存在下,通过在气相中水解环化氨基腈制备内酰胺的方法包括使用包含一种或多种通式(I)的低聚磷酸酯的催化剂,其中M是第三或第四族的金属 周期表,包括镧系元素,a为> 2.5和<4.0,b为使得电中性得到确保,或者一种或多种通式(I)的低磷酸盐与一种或多种其它金属的另外的盐的混合物 元素周期表的第3或第4族,包括镧系元素,与无机酸。

    Nitration of aromatic hydrocarbons
    14.
    发明授权
    Nitration of aromatic hydrocarbons 失效
    芳烃的硝化

    公开(公告)号:US06362381B1

    公开(公告)日:2002-03-26

    申请号:US09946639

    申请日:2001-09-06

    CPC classification number: C07B43/02 C07C201/08 C07C205/06

    Abstract: Aromatic hydrocarbons are nitrated by a process in which the aromatic hydrocarbon is reacted in the liquid phase with an oxide of nitrogen selected from NO, N2O3, NO2 and N2O4 and with an oxygen-containing gas stream in the presence of a heterogeneous oxidic catalyst, wherein at least 0.1 mol %, based on the aromatic hydrocarbon, of water is present at the beginning of the reaction.

    Abstract translation: 通过芳烃在液相中与选自NO,N 2 O 3,NO 2和N 2 O 4的氮氧化物和含有异质氧化催化剂的含氧气流反应的方法进行硝化,其中 在反应开始时,存在至少0.1mol%的基于芳烃的水。

Patent Agency Ranking