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    TWO-STAGE PROCESS FOR THE HYDROGENATION OF MALEIC ACID TO 1,4-BUTANEDIOL
    1.
    发明申请
    TWO-STAGE PROCESS FOR THE HYDROGENATION OF MALEIC ACID TO 1,4-BUTANEDIOL 审中-公开
    将马来酸氢化成1,4-丁二醇的两阶段方法

    公开(公告)号：WO0218316A3

    公开(公告)日：2002-06-20

    申请号：PCT/US0126765

    申请日：2001-08-27

    Applicant: STANDARD OIL CO

    Inventor： HEPFER ROBERT P ,  MILLER CRAIG T ,  ATTIG THOMAS G ,  NORENBERG GREGORY A ,  BUDGE JOHN R

    IPC: C07D307/33 ,  C07B61/00 ,  C07C29/149 ,  C07C31/20 ,  C07C51/36 ,  C07C55/10

    CPC classification number: C07C29/149 ,  C07C31/207

    Abstract: In the process for the conversion of maleic acid to gamma-butyrolactone. 1.4-butanediol and/or tetrahydrofuran, a feedstream comprising maleic acid is hydrogenated in a first hydrogenation zone to produce a reaction product comprising succinic acid and unreacted hydrogen which is then supplied to a second hydrogenation zone, where succinic acid is converted to 1,4-butanediol, the temper atures of the feedstream comprising maleic acid and the first hydrogenation zone are controlled such that the temperature of mal eic acid in the feedstream and the first hydrogenation zone does not exceed about 130 DEG C, thereby minimizing the corrosive effects of the maleic acid and prolonging reactor life and improving overall process economics.

    Abstract translation: 在马来酸转化为γ-丁内酯的过程中。 在1,4-丁二醇和/或四氢呋喃中，包含马来酸的原料流在第一氢化区中氢化以产生包含琥珀酸和未反应的氢的反应产物，然后将其供应到第二氢化区，其中琥珀酸转化成1,4 - 丁二醇中，控制包含马来酸和第一加氢区的进料流的温度，使得进料流和第一加氢区中的丙二酸的温度不超过约130℃，由此使 马来酸和延长反应器寿命并改善整个过程的经济性。

    7.
    发明专利
    未知

    公开(公告)号：DE69509060T2

    公开(公告)日：1999-08-05

    申请号：DE69509060

    申请日：1995-09-13

    Applicant: STANDARD OIL CO OHIO

    Inventor： ATTIG THOMAS G ,  BUDGE JOHN R ,  PEDERSEN ERIK S

    IPC: B01J23/656 ,  B01J23/68 ,  C07B61/00 ,  C07C27/04 ,  C07C29/149 ,  C07C29/17 ,  C07C31/20 ,  C07D307/08

    Abstract: Prodn. of tetrahydrofuran (THF) and 1,4-butanediol (BDO), contg. a major portion of BDO, comprises catalytic hydrogenation of an hydrogenatable precursor in contact with an H2-contg. gas and a carbon-supported Pd, Ag and Re-contg. hydrogenation catalyst prepd. by: i) impregnating the C support with a source of Pd, Ag and Re, in one or more steps, using at least one soln. of the metal sources; ii) drying the impregnated support to remove solvent after each impregnation step; iii) heating the impregnated support at 100-350 deg.C under reducing conditions.

    8.
    发明专利
    未知

    公开(公告)号：ES2130538T3

    公开(公告)日：1999-07-01

    申请号：ES95306409

    申请日：1995-09-13

    Applicant: STANDARD OIL CO OHIO

    Inventor： ATTIG THOMAS G ,  BUDGE JOHN R ,  PEDERSEN ERIK S

    IPC: B01J23/656 ,  B01J23/68 ,  C07B61/00 ,  C07C27/04 ,  C07C29/149 ,  C07C29/17 ,  C07C31/20 ,  C07D307/08

    Abstract: Prodn. of tetrahydrofuran (THF) and 1,4-butanediol (BDO), contg. a major portion of BDO, comprises catalytic hydrogenation of an hydrogenatable precursor in contact with an H2-contg. gas and a carbon-supported Pd, Ag and Re-contg. hydrogenation catalyst prepd. by: i) impregnating the C support with a source of Pd, Ag and Re, in one or more steps, using at least one soln. of the metal sources; ii) drying the impregnated support to remove solvent after each impregnation step; iii) heating the impregnated support at 100-350 deg.C under reducing conditions.

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