Process for the preparation of acetaldehyde
    4.
    发明授权
    Process for the preparation of acetaldehyde 失效
    制备乙醛的方法

    公开(公告)号:US4389532A

    公开(公告)日:1983-06-21

    申请号:US376975

    申请日:1982-05-10

    IPC分类号: C07C45/49 C07C47/06

    CPC分类号: C07C45/49

    摘要: The present invention provides a process for the preparation of acetaldehyde from hydrogen, carbon monoxide, and methanol. The process comprises conducting the reaction in the presence of a catalyst system comprising cobalt, platinum, and iodide. The cobalt catalyst component is present in a concentration of about 0.01 to 1 weight percent, the platinum catalyst component is present in a concentration of about 0.03 to 3 weight percent, and the iodide catalyst component is present in a concentration of about 0.1 to 40 weight percent, as defined herein. The weight ratio of cobalt to platinum is about 1:0.3 to 1:35. The process is preferably conducted at a temperature of 160.degree.-230.degree. C. and a pressure of 10,000-70,000 kPa.

    摘要翻译: 本发明提供从氢气,一氧化碳和甲醇制备乙醛的方法。 该方法包括在包含钴,铂和碘的催化剂体系的存在下进行反应。 钴催化剂组分以约0.01至1重量%的浓度存在,铂催化剂组分以约0.03至3重量%的浓度存在,碘化物催化剂组分以约0.1至40重量%的浓度存在 百分比,如本文所定义。 钴与铂的重量比为约1:0.3至1:35。 该方法优选在160-230℃的温度和10,000-70,000kPa的压力下进行。

    Carbonylation process for the production of aromatic
    6.
    发明授权
    Carbonylation process for the production of aromatic 失效
    羰基化方法生产芳香族

    公开(公告)号:US4845273A

    公开(公告)日:1989-07-04

    申请号:US188113

    申请日:1988-04-25

    IPC分类号: C07C51/10

    CPC分类号: C07C51/10

    摘要: Disclosed is a process for the production of aromatic carboxylic acids by the carbonylation of aromatic iodides in the presence of a rhodium catalyst and a Bronsted base in a hydrocarbon carboxylic acid reaction medium.

    摘要翻译: 公开了在烃羧酸反应介质中在铑催化剂和布朗斯台德碱存在下通过芳族碘化物的羰基化生产芳族羧酸的方法。