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    Process for the production of trimellitic anhydride
    1.
    发明授权
    Process for the production of trimellitic anhydride 失效
    偏苯三酸酐的制备方法

    公开(公告)号：US4537978A

    公开(公告)日：1985-08-27

    申请号：US591468

    申请日：1984-03-20

    申请人： Peter H. Kilner ,  Joseph P. Egan, Jr. ,  Stephen G. Ceisel ,  Wayne P. Schammel

    发明人： Peter H. Kilner ,  Joseph P. Egan, Jr. ,  Stephen G. Ceisel ,  Wayne P. Schammel

    IPC分类号： C07C51/265 ,  C07D307/89

    CPC分类号： C07C51/265

    摘要： A process for the oxidation of pseudocumene to trimellitic acid anhydride which comprises catalytic oxidation of pseudocumene with air in the presence of acetic acid in an oxidation zone in the liquid phase and wherein the weight ratio of acetic acid to pseudocumene is in the range of about 1.0-2.5:1.0 and the catalyst comprises one or more heavy metal oxidation catalysts comprising zirconium, cobalt and manganese to provide about 0.2 to about 0.4 weight percent total metals based on pseudocumene and a source of bromine. The addition of the bromine component is controlled to provide a total of about 0.10 to about 0.30 weight percent total bromine based on pseudocumene. The total weight ratio of bromide ions to total metals ions is about 0.7 to about 2.0. The zirconium content is about 1 to about 5% and manganese content is about 14 to about 24% each by weight of the total metals. The reaction temperature is about 100.degree. C. to about 250.degree. C. The acetic acid and water of reaction are withdrawn during the last 5 to about 20% of the reaction.

    摘要翻译： 一种用于将假阳离子氧化为偏苯三酸酐的方法，其包括在液相中的氧化区中在乙酸存在下用空气催化氧化假枯烯，并且其中乙酸与假枯烯的重量比在约1.0的范围内 -2.5:1.0，并且催化剂包含一种或多种包含锆，钴和锰的重金属氧化催化剂，以提供约0.2至约0.4重量％的基于假阳离子和溴源的总金属。 控制加入溴组分以提供基于假枯烯的总共约0.10至约0.30重量％的总溴。 溴离子与总金属离子的总重量比为约0.7至约2.0。 锆含量为约1至约5％，锰含量为总金属重量的约14至约24％。 反应温度为约100℃至约250℃。在反应的最后5至约20％期间，将乙酸和反应水取出。

    Process for the production of trimellitic anhydride
    2.
    发明授权
    Process for the production of trimellitic anhydride 失效
    偏苯三酸酐的制备方法

    公开(公告)号：US4587350A

    公开(公告)日：1986-05-06

    申请号：US744925

    申请日：1985-06-14

    申请人： Peter H. Kilner ,  Joseph P. Egan, Jr. ,  Stephen G. Ceisel ,  Wayne P. Schammel

    发明人： Peter H. Kilner ,  Joseph P. Egan, Jr. ,  Stephen G. Ceisel ,  Wayne P. Schammel

    IPC分类号： C07D307/89

    CPC分类号： C07D307/89

    摘要： A process for the oxidation of pseudocumene to trimellitic acid anhydride is disclosed which comprises catalytic oxidation of pseudocumene with air in the presence of acetic acid in an oxidation zone in the liquid phase wherein the weight ratio of acetic acid to pseudocumene is in the range of about 0.5-4.0:1.0 and the catalyst comprises one or more heavy metal oxidation catalysts comprising zirconium, cobalt, and manganese to provide about 0.1 to about 0.4 weight percent total metals based on pseudocumene and a source of bromine. The addition of the bromine component is controlled to provide a total of about 0.10 to about 0.30 weight percent total bromine based on pseudocumene. The total weight ratio of bromine ions to total metals ions is about 0.5 to about 2.0. The zirconium content is about 1 to about 5% and the manganese content is about 14 to about 60% each by weight of the total metals. The reaction temperature is about 100.degree. C. to about 250.degree. C. The acetic acid and water of reaction are withdrawn during the last 5 to about 20% of the reaction.

    摘要翻译： 公开了将假枯烯氧化成偏苯三酸酐的方法，其包括在液相中的氧化区中在乙酸存在下用空气催化氧化假枯烯，其中乙酸与假枯烯的重量比在约 0.5-4.0:1.0，并且催化剂包含一种或多种包含锆，钴和锰的重金属氧化催化剂，以提供约0.1至约0.4重量％的基于假阳离子和溴源的总金属。 控制加入溴组分以提供基于假枯烯的总共约0.10至约0.30重量％的总溴。 溴离子与总金属离子的总重量比为约0.5至约2.0。 锆含量为约1至约5％，锰含量为总金属重量的约14至约60％。 反应温度为约100℃至约250℃。在反应的最后5至约20％期间，将乙酸和反应水取出。