Iridium catalyzed carbonylation process for the production of acetic acid
    10.
    发明授权
    Iridium catalyzed carbonylation process for the production of acetic acid 失效
    铱催化羰基化方法生产乙酸

    公开(公告)号:US5877347A

    公开(公告)日:1999-03-02

    申请号:US992103

    申请日:1997-12-17

    CPC分类号: C07C51/12

    摘要: A process for the production of acetic acid comprises (1) continuously feeding methanol and/or a reactive derivative thereof and carbon monoxide to a carbonylation reactor containing a liquid reaction composition comprising an iridium carbonylation catalyst, methyl iodide co-catalyst, a finite concentration of water, acetic acid, methyl acetate and, optionally at least one promoter, (2) carbonylating the methanol and/or reactive derivative thereof with the carbon monoxide in the liquid reaction composition to produce acetic acid; and (3) recovering acetic acid from the liquid reaction composition, there being continuously maintained (a) in the liquid reaction composition water at a concentration of no greater than 4.5% by weight, and (b) in the reactor a carbon monoxide partial pressure in the range from greater than 0 to 7.5 bar.

    摘要翻译: 制备乙酸的方法包括(1)将甲醇和/或其反应性衍生物和一氧化碳连续加入到含有液体反应组合物的羰基化反应器中,所述液体反应组合物包含铱羰基化催化剂,甲基碘助催化剂,有限浓度的 水,乙酸,乙酸甲酯和任选的至少一种促进剂,(2)在液体反应组合物中将一氧化碳的甲醇和/或其反应性衍生物羰基化以产生乙酸; 和(3)从液体反应组合物中回收乙酸,在液体反应组合物水中以不大于4.5重量%的浓度连续地维持(a),和(b)在反应器中一氧化碳分压 在大于0至7.5巴的范围内。