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    Alkene coupling
    2.
    发明公开
    Alkene coupling 失效
    ALKENE耦合

    公开(公告)号：EP0405366A3

    公开(公告)日：1992-03-04

    申请号：EP90111906.5

    申请日：1990-06-22

    申请人： ALBEMARLE CORPORATION

    发明人： Smith, Robert Scott

    IPC分类号： C07C2/24 ,  C07C11/113 ,  C07C11/10

    CPC分类号： C07C2/24 ,  B01J23/04 ,  C07C2521/08 ,  C07C2523/04

    摘要： A normal 1-alkene containing 3-8 carbons is coupled with itself, another such alkene, or ethene in the pres­ence of a supported alkali metal as a catalyst and 10-100 mol %, based on the amount of alkali metal catalyst, of an alkali metal hydroxide as a co-catalyst; the support being a silica having a surface area not greater than 5 m²/g. In preferred embodiments of the invention, the alkene is propene or a mixture of propene and ethene, the alkali metal is potassium or a potassium alloy, and the co-cata­lyst is potassium hydroxide.

    Process for propylene dimerization
    3.
    发明公开
    Process for propylene dimerization 失效
    Verfahren zur Dimerisierung von Propylen。

    公开(公告)号：EP0258973A2

    公开(公告)日：1988-03-09

    申请号：EP87305744.2

    申请日：1987-06-29

    申请人： THE DOW CHEMICAL COMPANY

    发明人： Stevens, James C. ,  Fordyce, William A.

    IPC分类号： C07C11/113 ,  C07C2/34 ,  B01J31/22

    CPC分类号： C07C2/34 ,  C07C2531/22 ,  Y02P20/52 ,  C07C11/113

    摘要： 4-methyl-1-pentene is produced via the catalyst dimerization of propylene.
    Using a catalyst comprising at least one element selected from uranium and the rare earth metals. The selectivity to 4-methyl-1-pentene usually is at least 94 mole percent. The preferred catalysts are uranium and rare earth di(poly-substituted cyclopentadienyl) hydride complexes especially uranium (pentahaptopenta methyl cyclopentadienyl) hydride complexes.

    摘要翻译： 通过丙烯的催化剂二聚制备4-甲基-1-戊烯。 使用包含至少一种选自铀和稀土金属的元素的催化剂。 4-甲基-1-戊烯的选择性通常为94摩尔％以上。 优选的催化剂是铀和稀土二（多取代的环戊二烯基）氢化物络合物，特别是铀（五五氟甲基环戊二烯基）氢化物络合物。

    Process for preparing 4-methyl-1-pentene
    4.
    发明公开
    Process for preparing 4-methyl-1-pentene 失效
    一种用于4-甲基-1-戊烯的制备方法。

    公开(公告)号：EP0143334A1

    公开(公告)日：1985-06-05

    申请号：EP84112864.8

    申请日：1984-10-25

    申请人： NIPPON OIL CO. LTD.

    发明人： Matsuno, Mitsuo ,  Kudoh, Michio ,  Imai, Hirosuke

    IPC分类号： C07C11/113 ,  C07C2/08

    CPC分类号： C07C2/10 ,  B01J23/04 ,  C07C2/26 ,  C07C2521/04 ,  C07C2523/04 ,  C07C2527/232 ,  C07C2531/02 ,  C07C11/113

    摘要： A process for preparing 4-methyl-1-pentene comprising dimerizing propylene in the presence of a catalyst, characterized in that the catalyst is composed from the treatment of precatalyst by at least one oxygen-containing compound selected from oxygen, alcohols, ethers, acetals, orthocarboxylates and esters. The precatalyst is composed of element or compound selected from sodium, potassium, sodium amide and potassium amide supported on a carrier principally represented by the following formula (1):
    wherein x has a value in the range of 0.5≦
    The use of above mentioned catalyst so remarkably increases the rate of reaction and the selectivity of 4-methyl-1-pentene and allows the reaction rate and selectivity to be kept high for a long period of time.