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    • 3. 发明公开
    • Process for isomerizing linear olefins to isoolefins
    • Verfahren zur Isomerisierung von linearen Olefinen zu Isoolefinen
    • EP0854125A1
    • 1998-07-22
    • EP98106073.4
    • 1994-12-23
    • SHELL OIL COMPANY
    • Murray, Brendan Dermot
    • C07C5/27C07C11/02B01J29/06B01J37/00
    • B01J37/0009B01J29/65B01J2229/42C07C5/2775C07C2521/04C07C2529/06C07C2529/65C07C2529/67C07C11/02
    • A process for structurally isomerizing a linear olefin of at least 4 carbon atoms to its corresponding methyl branched isoolefin comprising contacting at a temperature of from about 200°C to about 650°C a hydrocarbon feed stream containing at least one said linear olefin with an isomerizing catalyst produced by a process which comprises:

      (a) mixing

      (i) a zeolite powder comprising at least one zeolite with at least one one-dimensional pore structure having a pore size small enough to retard by-product dimerization and coke formation and large enough to permit entry of the linear olefin and allow formation of the methyl branched isoolefin,
      (ii) an alumina-containing binder,
      (iii) water, and
      (iv) an effective amount of an acid comprising at least one polycarboxylic acid to peptize the zeolite powder, the binder or a mixture thereof thereby producing a mixture;

      (b) forming one or more consolidated particles from said mixture; and
      (c) calcining said particles at a temperature of from about 200°C to about 700°C.
    • 准备 用于将线性4 + C烯烃结构异构化到其对应物的催化剂。 甲基支链异烯烃涉及:(a)将(i)包含至少一种沸石的沸石粉末与具有足够小孔径的> =一维孔结构进行混合,以阻止副产物。 二聚和焦炭形成,并且足够大以允许线性烯烃进入和形成异烯烃,(ii)粘合剂,(iii)水,(iv)0.1-6重量%w.r.t. (i)和(ii)的≥1个单羧酸或无机酸,和(v)0.1-6重量%w.r.t. (ⅰ)和(ⅱ)的一种多元羧酸,(b)从该物质形成一种或多种固结颗粒。 mixt。 线性4 + C烯烃与其甲基支链异构烯烃的结构异构化包括在200-650℃下与上述催化剂接触,并且(c)在200-700℃煅烧颗粒。