Method for producing aromatic compounds having alkyl group with at least three carbon atoms
    15.
    发明授权
    Method for producing aromatic compounds having alkyl group with at least three carbon atoms 失效
    制备具有至少3个碳原子的烷基的芳族化合物的方法

    公开(公告)号:US06462248B1

    公开(公告)日:2002-10-08

    申请号:US09385270

    申请日:1999-08-30

    IPC分类号: C07C2508

    摘要: Aromatic compounds having an alkyl group with at least 3 carbon atoms are produced in a process comprising at least one of the following steps: (1) a step of contacting a starting material that contains an aromatic compound having a branched alkyl group with at least 3 carbon atoms, with a zeolite-containing catalyst in a liquid phase in the presence of hydrogen therein, thereby changing the position of the carbon atoms of the alkyl group bonding to the aromatic ring of the compound; (2) a step of contacting a starting material that contains an aromatic compound having a branched alkyl group with at least 3 carbon atoms, with a catalyst containing zeolite and containing rhenium and/or silver, in a liquid phase, thereby changing the position of the carbon atoms of, the alkyl group bonding to the aromatic ring of the compound; (3) a step of contacting a halogenated aromatic compound having an alkyl group with at least 3 carbon atoms, with an acid-type catalyst, thereby isomerizing the compound; (4) a step of treating a mixture of isomers of an aromatic compound having an alkyl group with at least 3 carbon atoms, with a zeolite adsorbent that contains at least one exchangable cation selected from alkali metals, alkaline earth metals, lead, thallium and silver, thereby separating a specific isomer from the isomer mixture through adsorption.

    摘要翻译: 具有至少3个碳原子的烷基的芳香族化合物是以至少一个以下步骤的方法生产的:(1)使包含具有支链烷基的芳族化合物的原料与至少3个 碳原子与含有沸石的催化剂在氢气存在下在液相中,从而改变与化合物的芳环键合的烷基的碳原子的位置;(2)使起始 含有具有至少3个碳原子的支链烷基的芳族化合物的物质,含有沸石的催化剂,含有铼和/或银的液相,从而改变了烷基键合的碳原子的位置 化合物的芳香环;(3)使具有至少3个碳原子的烷基的卤代芳族化合物与酸型催化剂接触的步骤,从而使组合物异构化 (4)将具有至少3个碳原子的具有烷基的芳族化合物的异构体的混合物与沸石吸附剂一起处理的步骤,所述沸石吸附剂含有至少一种选自碱金属,碱土金属,铅, 铊和银,从而通过吸附从异构体混合物中分离出特定异构体。

    Process for the dewaxing of hydrocarbon fractions
    19.
    发明授权
    Process for the dewaxing of hydrocarbon fractions 失效
    烃馏分脱蜡方法

    公开(公告)号:US4572779A

    公开(公告)日:1986-02-25

    申请号:US579171

    申请日:1984-02-10

    摘要: A process for improving the fluidity of hydrocarbon fractions by dewaxing thereof. In the present process, hydrocarbon fractions are contacted with hydrogen in the presence of a specific type of catalyst, thereby lowering the pour point of the hydrocarbon fraction. The catalyst comprises a specific type of zeolite which is defined by a specific X-ray diffraction pattern and which has a predetermined range of mesitylene adsorption of not less than 1.6 wt %. The zeolite catalyst is obtained by providing an aqueous reaction mixture of SiO.sub.2, Al.sub.2 O.sub.3, an alkaline source as OH.sup.-, and a carboxyl group-containing organic compound having the following composition:______________________________________ SiO.sub.2 /Al.sub.2 O.sub.3 20-60 H.sub.2 O/SiO.sub.2 5-100 OH.sup.- /SiO.sub.2 0.1-0.35 ______________________________________ and reacting the mixture until crystals are produced. Advantageously, the ratio of the carboxyl group-containing organic compound to aluminum oxide is about 1.0 to 100.

    摘要翻译: 通过脱蜡改善烃馏分的流动性的方法。 在本方法中,在特定催化剂存在下,使烃馏分与氢接触,从而降低烃馏分的倾点。 该催化剂包括由特定的X射线衍射图定义并且具有不小于1.6重量%的均三甲苯吸附的预定范围的特定类型的沸石。 沸石催化剂通过提供SiO 2,Al 2 O 3,碱性源作为OH-的含水反应混合物和具有以下组成的含羧基的有机化合物获得:-SiO 2 / Al 2 O 3 20-60 -H 2 O / SiO 2 5-100 -OH- / SiO 2 0.1-0.35 - 并使混合物反应直至产生晶体。 有利地,含羧基的有机化合物与氧化铝的比例为约1.0至100。