Process for the preparation of alkyl tert-alkyl ethers
    45.
    发明授权
    Process for the preparation of alkyl tert-alkyl ethers 失效
    烷基叔烷基醚的制备方法

    公开(公告)号:US4605787A

    公开(公告)日:1986-08-12

    申请号:US742375

    申请日:1985-06-10

    CPC classification number: C07C41/36 C07C41/06

    Abstract: Process for the preparation of alkyl tert-alkyl ethers which comprises reacting a primary alcohol with an olefin having a double bond on a tertiary carbon atom in the presence of an acidic zeolite catalyst. Removal of any excess alcohol from the reaction product is accomplished by passing the reaction product through a bed of small pore zeolite.

    Abstract translation: 烷基叔烷基醚的制备方法,其包括在酸性沸石催化剂存在下使伯醇与叔碳原子上具有双键的烯烃反应。 通过使反应产物通过小孔沸石床来实现从反应产物中除去过量的醇。

    Catalyst composition dewaxing of lubricating oils
    46.
    发明授权
    Catalyst composition dewaxing of lubricating oils 失效
    催化剂组合物脱蜡润滑油

    公开(公告)号:US4601993A

    公开(公告)日:1986-07-22

    申请号:US661632

    申请日:1984-10-17

    CPC classification number: C10G45/64 B01J29/80

    Abstract: Hydrocarbon lubricating oil feedstocks are dewaxed by passing the waxy feedstock over a catalyst bed containing a mixture of medium pore zeolite and large pore zeolite catalysts havig a Constraint Index less than 2 and having hydroisomerization activity in the presence of a hydrogenation component.

    Abstract translation: 通过将含蜡原料通过含有中等孔沸石和大孔沸石催化剂的混合物的催化剂床,使烃润滑油原料脱蜡,达到小于2的约束指数,并且在氢化组分存在下具有加氢异构化活性。

    Synthesis of zeolite ZSM-5
    47.
    发明授权
    Synthesis of zeolite ZSM-5 失效
    沸石ZSM-5的合成

    公开(公告)号:US4526879A

    公开(公告)日:1985-07-02

    申请号:US520746

    申请日:1983-08-05

    Abstract: As synthesized by conventional technique, zeolite ZSM-5 is crystallized in the presence of substantial amount of tetraalkylammonium cations, the alkyl groups of which contain 2 to 5 carbon atoms, such as, for example, tetrapropylammonium. When synthesized in the conventional way, ZSM-5 contains tetraalkylammonium cations as well as a substantial amount of sodium ions. To obtain a more catalytically active form of ZSM-5, the sodium ions must be exchanged to very low levels. By synthesizing zeolite ZSM-5 according to the present method, i.e., in the presence of a combination of an amine and a halide in the presence of a mutual solvent and with a specifically defined reaction mixture composition, ZSM-5 having different organic nitrogen-containing cations but the same crystal structure as conventionally prepared ZSM-5 is obtained. The ZSM-5 prepared in accordance herewith is very low in sodium content as synthesized and has a crystal size of from about 0.05 microns to about 20 microns.

    Abstract translation: 如通过常规技术合成的,沸石ZSM-5在存在大量四烷基铵阳离子(其烷基含有2至5个碳原子的四烷基铵阳离子)存在下结晶,例如四丙基铵。 当以常规方式合成时,ZSM-5含有四烷基铵阳离子以及大量的钠离子。 为了获得更具催化活性的ZSM-5形式,钠离子必须交换到非常低的水平。 通过根据本发明的方法合成沸石ZSM-5,即在相互溶剂存在下,在胺和卤化物的组合存在下,与特定定义的反应混合物组合物,具有不同有机氮气的ZSM-5, 得到与常规制备的ZSM-5相同的晶体结构。 根据本文制备的ZSM-5的钠含量非常低,并且具有约0.05微米至约20微米的晶体尺寸。

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