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    • 5. 发明授权
    • Process for making an aromatic diacid in one step using a single catalyst system
    • 使用单一催化剂体系在一个步骤中制备芳族二酸的方法
    • US06355834B1
    • 2002-03-12
    • US09644228
    • 2000-08-22
    • Thomas Fairchild BrownscombeSusan Secor PfrehmWilliam Larry King
    • Thomas Fairchild BrownscombeSusan Secor PfrehmWilliam Larry King
    • C07C5116
    • C07C51/265C07C63/38
    • Disclosed is a process for manufacturing an aromatic diacid in one step with a single catalyst system which comprises: a) Introducing into a reactor an aromatic hydrocarbon containing the number of rings desired in the product diacid with one or more alkyl groups attached to the rings; b) Reacting said aromatic hydrocarbon in the presence of an oxidant supply and a single catalyst system comprising at least one catalyst selected from Group IB, IIB, VB, or VIIB of the Periodic Table, in a reaction medium capable of stabilizing the aromatic acids formed against further oxidation to water and CO2, or decarboxylation to aromatic hydrocarbons, and also capable of allowing the isomerization of the acids so formed to the desired diacids; and c) Reacting said hydrocarbon feed with said oxidant in the presence of said catalyst system until a desired amount of said feed is oxidized to carboxylic acids and isomerized to the desired diacid product.
    • 公开了一种用单一催化剂体系制备芳族二酸的方法,该方法包括:a)向反应器中引入含有产物二酸中期望的数目的环的芳族烃与一个或多个连接到环上的烷基; b)在氧化剂供应和包含至少一种选自元素周期表IB,IIB,VB或VIIB族的催化剂的催化剂体系的存在下,在能够稳定形成的芳族酸的反应介质中使所述芳烃反应 防止进一步氧化成水和二氧化碳,或对芳烃脱碳,并且还能够使所形成的酸异构化成所需的二酸; 和c)在所述催化剂体系的存在下,用所述氧化剂使所述烃进料反应,直到所需量的所述进料被氧化成羧酸并异构化为所需的二酸产物。