PURIFYING CRUDE FURAN 2,5-DICARBOXYLIC ACID BY HYDROGENATION
    7.
    发明申请
    PURIFYING CRUDE FURAN 2,5-DICARBOXYLIC ACID BY HYDROGENATION 审中-公开
    通过氢化法纯化原料呋喃2,5-二羧酸

    公开(公告)号:US20140364633A1

    公开(公告)日:2014-12-11

    申请号:US14309010

    申请日:2014-06-19

    CPC classification number: C07D307/68

    Abstract: A process for purifying a crude furan 2,5-dicarboxylic acid composition (cFDCA) by hydrogenation of a FDCA composition dissolved in a hydrogenation solvent such as water, and hydrogenating under mild conditions, such as at a temperature within a range of 130° C. to 225° C. by contacting the solvated FDCA composition with hydrogen in the presence of a hydrogenation catalyst under a hydrogen partial pressure within a range of 10 psi to 900 psi. A product FDCA composition is produced having a low amount of tetrahydrofuran dicarboxylic acid, a low b*, and a low amount of 5-formyl furan-2-carboxylic acid (FFCA).

    Abstract translation: 通过氢化溶解在氢化溶剂如水中的FDCA组合物,并在温和条件下(例如在130℃的温度范围内)氢化来纯化粗呋喃2,5-二羧酸组合物(cFDCA)的方法 通过在10psi至900psi的氢分压下,在氢化催化剂存在下使溶剂化的FDCA组合物与氢气接触。 制备具有少量四氢呋喃二羧酸,低b *和少量5-甲酰基呋喃-2-羧酸(FFCA)的产品FDCA组合物。

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