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    • 9. 发明授权
    • Process for the isomerization of dimethylnaphthalenes
    • 二甲基萘异构化的方法
    • US4777312A
    • 1988-10-11
    • US138249
    • 1987-12-28
    • Steve T. BakasPaul T. Barger
    • Steve T. BakasPaul T. Barger
    • B01J29/22C07C5/22C07C5/27C10G45/64
    • B01J29/22C07C5/2791Y02P20/582
    • Superior isomerization performance is obtained in an isomerization process employing a catalytic composition comprising a Group VIII noble metal and a hydrogen form mordenite incorporated with alumina. The superior isomerization performance is achieved using a catalyst composition having a surface area of at least 580 m.sup.2 /g. A novel method of preparing an isomerization catalyst having a surface area of at least 580 m.sup.2 /g is characterized by contacting a formed catalytic composite with an acidic aqueous solution prior to addition of the Group VIII noble metal. The isomerization process is particularly useful in the isomerization of a dimethylnaphthalene containing feedstock into a product that contains a higher concentration of the 2,6-dimethylnaphthalene isomer than did the feedstock.
    • 在使用包含VIII族贵金属和与氧化铝结合的氢形式丝光沸石的催化组合物的异构化方法中获得了优异的异构化性能。 使用具有至少580m 2 / g的表面积的催化剂组合物来实现优异的异构化性能。 制备具有至少580m 2 / g的表面积的异构化催化剂的新方法的特征在于,在加入第VIII族贵金属之前,使形成的催化剂复合物与酸性水溶液接触。 异构化方法特别可用于将含二甲基萘的原料异构化成含有比原料更高浓度的2,6-二甲基萘异构体的产物。