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    Direct selective synthesis of para-xylene by reacting an aromatic compound with a methylating agent formed from CO, Co2 and H2
    2.
    发明授权
    Direct selective synthesis of para-xylene by reacting an aromatic compound with a methylating agent formed from CO, Co2 and H2 有权
    通过使芳族化合物与由CO，CO 2和H 2形成的甲基化剂反应直接选择性合成对二甲苯

    公开(公告)号：US06388156B1

    公开(公告)日：2002-05-14

    申请号：US09312104

    申请日：1999-05-14

    申请人： John D. Y. Ou ,  Gary F. Janda ,  Zongxuan Hong ,  Russell D. Sellen

    发明人： John D. Y. Ou ,  Gary F. Janda ,  Zongxuan Hong ,  Russell D. Sellen

    IPC分类号： C07C120

    CPC分类号： C07C2/862 ,  B01J23/002 ,  B01J29/061 ,  B01J29/40 ,  B01J29/85 ,  B01J35/0006 ,  B01J37/0203 ,  B01J37/086 ,  B01J2229/12 ,  B01J2229/32 ,  B01J2229/34 ,  B01J2523/00 ,  Y02P20/52 ,  C07C15/08 ,  B01J2523/3712 ,  B01J2523/48

    摘要： It has been discovered that para-xylene (PX) can be synthesized with improved selectivity by reacting an aromatic compound such as toluene and/or benzene with a reactant(s) such as a combination of hydrogen and carbon monoxide and/or carbon dioxide and/or methanol or methylating agents produced therefrom. Catalytic reaction systems are employed, such as crystalline or amorphous aluminosilicates having one-dimensional channel structure, para-alkyl selectivated crystalline or amorphous aluminosilicates, para-alkyl selectivated substituted aluminosilicates, crystalline or amorphous substituted silicates having one-dimensional channel structure, para-alkyl selectivated substituted silicates, crystalline or amorphous aluminophosphates, para-alkyl selectivated crystalline or amorphous aluminophosphates, para-alkyl selectivated zeolite-bound zeolite and para-alkyl selectivated substituted aluminophosphates, and mixtures thereof. The catalytic reaction systems may be selectivated with organometallic compounds, compounds of elements selected from Groups 1 through 16, coke, and mixtures thereof. Using this process, catalyst stability and life is improved.

    摘要翻译： 已经发现，通过使芳族化合物如甲苯和/或苯与诸如氢和一氧化碳和/或二氧化碳的组合的反应物反应，可以通过使诸如甲苯和/或苯等芳族化合物与/或二氧化碳的组合反应而使提高的选择性合成对二甲苯（PX） /或由其制备的甲醇或甲基化剂。 使用催化反应体系，例如具有一维通道结构的结晶或无定形硅铝酸盐，对位烷基选择性结晶或无定形硅铝酸盐，对烷基选择取代的硅铝酸盐，具有一维通道结构的结晶或无定形取代的硅酸盐，对 - 烷基 选择性取代的硅酸盐，结晶或无定形磷酸铝，对烷基选择性晶体或无定形磷酸铝，对位烷基选择性沸石键合沸石和对位烷基选择取代的铝磷酸盐，及其混合物。 可以用有机金属化合物，选自第1至16组的元素的化合物，焦炭及其混合物选择催化反应体系。 使用该方法，提高了催化剂的稳定性和寿命。

    Production, purification and polymerization of aromatic dicarboxylic acids
    3.
    发明授权
    Production, purification and polymerization of aromatic dicarboxylic acids 有权
    芳香族二羧酸的生产，纯化和聚合

    公开(公告)号：US06642407B2

    公开(公告)日：2003-11-04

    申请号：US10133083

    申请日：2002-04-26

    申请人： Krishna Kulai Rao ,  Russell D. Sellen ,  Xiaobing Feng ,  James Spanswick ,  William F. Huber, Jr.

    发明人： Krishna Kulai Rao ,  Russell D. Sellen ,  Xiaobing Feng ,  James Spanswick ,  William F. Huber, Jr.

    IPC分类号： C07C6748

    CPC分类号： C07C51/493 ,  C07C63/38

    摘要： This invention provides a process for purifying the crude aromatic dicarboxylic acids produced by oxidation of dialkyl aromatic hydrocarbons and for using the purified acids in the preparation of polyethylene terephthalate, polyethylene naphthalate and other polyesters. The invention simplifies the manufacturing process by converting the crude aromatic acids into bis-glycol esters in an esterification reactor 4, from which the esterified partial oxidation impurities present in the oxidation product are removed by distillation in distillation tower 5. After removal of the volatile impurities, the dicarboxylic acid esters can separated by distillation in distillation tower 6 or by crystallization and converted to polyesters by polycondensation. The volatile impurities removed as overhead from tower 5 can be recycled as stream 16 to the oxidation reactor where they act as oxidation promoters thereby optionally allowing for a bromine-free oxidation process for dialkyl aromatic hydrocarbons.

    摘要翻译： 本发明提供了一种净化由二烷基芳烃氧化产生的粗芳族二羧酸和在制备聚对苯二甲酸乙二醇酯，聚萘二甲酸乙二醇酯和其它聚酯中使用纯化酸的方法。 本发明通过在酯化反应器4中将粗芳香酸转化为双 - 二醇酯来简化制造过程，通过在蒸馏塔5中蒸馏除去存在于氧化产物中的酯化的部分氧化杂质。除去挥发性杂质 ，二羧酸酯可以通过在蒸馏塔6中蒸馏或通过结晶分离，并通过缩聚转化成聚酯。 从塔架5塔顶除去的挥发性杂质可作为料流16再循环到氧化反应器中，在该反应器中它们作为氧化促进剂，从而任选地允许二烷基芳族烃的无溴氧化方法。