Olefin oligomerization with surface modified zeolite catalyst
    29.
    发明授权
    Olefin oligomerization with surface modified zeolite catalyst 失效
    烯烃低聚与表面改性沸石催化剂

    公开(公告)号:US4870038A

    公开(公告)日:1989-09-26

    申请号:US140361

    申请日:1988-01-04

    摘要: A process for producing substantially linear hydrocarbons by oligomerizing a lower olefin at elevated temperature and pressure which comprises contacting the lower olefin under oligomerization/polymerization conditions with siliceous acidic ZSM-23 zeolite having Bronsted acid activity; wherein the zeolite has acidic pore activity and wherein the zeolite surface is rendered substantially inactive for acidic reactions. The zeolite surface can be neutralized by a bulky pyridine compound having an effective cross-section larger than the zeolite pore. The preferred deactivating agent is 2,4,6-collidine, which may be applied to the zeolite as a pretreatment or added with olefin feed in a continuous process. The olefin oligomers may be used as alkylating agents to prepare biodegradable alkylbenzenes and alkylphenylsulfonates. A preferred catalyst for this alkylation reaction is dealuminized mordenite.

    摘要翻译: 一种通过在升高的温度和压力下使低级烯烃低聚制备基本上线性的烃的方法,其包括在低聚/聚合条件下使低级烯烃与具有布朗斯台德酸活性的硅酸性酸性ZSM-23沸石接触; 其中所述沸石具有酸性孔隙活性,并且其中所述沸石表面对于酸性反应基本上不起作用。 沸石表面可以被具有大于沸石孔的有效横截面的体积大的吡啶化合物中和。 优选的去活化剂是2,4,6-可力丁,其可以作为预处理施加到沸石上,或者在连续方法中加入烯烃进料。 烯烃低聚物可用作烷基化剂以制备可生物降解的烷基苯和烷基苯基磺酸盐。 用于该烷基化反应的优选催化剂是脱铝丝光沸石。