Binary zeolitic systems, their synthesis and their utilization
    2.
    发明授权
    Binary zeolitic systems, their synthesis and their utilization 失效
    二元沸石系统及其合成及其利用

    公开(公告)号:US4946580A

    公开(公告)日:1990-08-07

    申请号:US348285

    申请日:1989-05-05

    摘要: The present invention concerns binary zeolitic systems comprising two zeolites A and B having different crystalline structures while having common structural units. The crystals of the zeolite A form a central core surrounded by a crown of crystals of zeolite B, the zeolites A and B being disposed concentrically and following the same longitudinal axis. These systems are formed by the introduction of a nucleation gel containing germs of the zeolite A in a growth gel where the crystallization parameters are favorable to the crystallization of the zeolite B. The binary zeolitic systems are useful as catalysts for transforming hydrocarbons and more especially as cracking catalysts.

    摘要翻译: 本发明涉及包含具有不同结晶结构的两个沸石A和B的二元沸石体系,同时具有共同的结构单元。 沸石A的晶体形成由沸石B的晶体顶部包围的中心核心,沸石A和B同心地设置并且沿着相同的纵向轴线。 这些体系通过在生长凝胶中引入含有沸石A的细菌的成核凝胶形成,其中结晶参数有利于沸石B的结晶。二元沸石体系可用作转化烃的催化剂,更特别的是用作 裂解催化剂。

    Process for upgrading olefinic gasolines by etherification
    5.
    发明授权
    Process for upgrading olefinic gasolines by etherification 失效
    通过醚化提纯烯烃汽油的方法

    公开(公告)号:US4664675A

    公开(公告)日:1987-05-12

    申请号:US745985

    申请日:1985-06-18

    CPC分类号: C10L1/023

    摘要: The invention concerns a process for upgrading olefinic gasolines containing C.sub.5 hydrocarbons, but free of C.sub.4 hydrocarbons, by etherification. It is characterized in that the tertiary olefins of the charge are reacted (1 and 2) with methanol; the reaction effluent being then extracted (3) with water, in order to separate an aqueous phase containing the major part of the unreacted methanol from a hydrocarbon phase containing the major part of the formed ethers. The aqueous phase is then introduced in a distillation zone (4) where water is separated from methanol and recycled to the extraction zone (3), whereas methanol is recycled to the etherification zone (1 and 2).

    摘要翻译: 本发明涉及一种通过醚化提纯含有C5烃但不含C4烃的烯烃汽油的方法。 其特征在于电荷的叔烯烃与甲醇反应(1和2); 然后将反应流出物用水萃取(3),以便将含有主要部分未反应的甲醇的水相与含有主要部分形成的醚的烃相分离。 然后将水相引入蒸馏区(4),其中将水从甲醇中分离并再循环至萃取区(3),而甲醇被再循环至醚化区(1和2)。

    Process for hydration of olefins
    6.
    发明授权
    Process for hydration of olefins 失效
    烯烃水合方法

    公开(公告)号:US4611086A

    公开(公告)日:1986-09-09

    申请号:US606641

    申请日:1984-05-03

    CPC分类号: C07C29/04

    摘要: A process for the preparation of aliphatic alcohols by hydration of olefins in the presence of a catalyst comprising a zeolitic crystalline silicoaluminate of the offretite type. The offretite used can be natural or sythetic. Particularly convenient among the olefins are olefins of low molecular weight having up to 5 carbon atoms. The alcohols obtained are used as solvents, as bases for lubricants and as adjuvants of essences.

    摘要翻译: 在催化剂存在下通过烯烃的水合制备脂肪族醇的方法,所述催化剂包含无色型沸石结晶硅铝酸盐。 所使用的漂白剂可以是天然的或合成的。 在烯烃中特别方便的是具有至多5个碳原子的低分子量烯烃。 获得的醇用作溶剂,作为润滑剂的碱和作为香精佐剂。