Purification of terephthalic acid
    33.
    发明授权
    Purification of terephthalic acid 失效
    对苯二甲酸的纯化

    公开(公告)号:US4626598A

    公开(公告)日:1986-12-02

    申请号:US745620

    申请日:1985-06-17

    CPC分类号: C07C51/487

    摘要: An improved method for producing purified terephthalic acid by catalytic hydrogenation is disclosed. Control of the reduction of colored compounds during the production of purified terephthalic acid is effected by modulating solution hydrogen concentration during hydrogenation.

    摘要翻译: 公开了通过催化氢化制备纯对苯二甲酸的改进方法。 在精制对苯二甲酸生产过程中控制有色化合物的还原是通过在氢化期间调节溶液氢浓度来实现的。