Bollmann Annette, Blann Kevin, Dixon John T, Hess Fiona M, Killian Esna, Maumela Hulisani, McGuinness David S, Morgan David H, Neveling Arno, Otto Stefanus, Overett Matthew, Slawin Alexandra M Z, Wasserscheid Peter, Kuhlmann Sven
R & D Division, Sasol Technology (Pty) Ltd., 1 Klasie Havenga Road, Sasolburg 1947, South Africa.
J Am Chem Soc. 2004 Nov 17;126(45):14712-3. doi: 10.1021/ja045602n.
Linear alpha-olefins, such as 1-hexene and 1-octene, are important comonomers in the production of linear low-density polyethylene (LLDPE). The conventional method of producing 1-hexene and 1-octene is by oligomerization of ethylene, which yields a wide spectrum of linear alpha-olefins (LAOs). While there exists several processes for producing 1-hexene via ethylene trimerization, a similar route for the selective production of 1-octene has so far been elusive. We now, for the first time, report an unprecedented ethylene tetramerization reaction that produces 1-octene in selectivities exceeding 70%, using an aluminoxane-activated chromium/((R2)2P)2NR1 catalyst system.
线性α-烯烃，如1-己烯和1-辛烯，是线性低密度聚乙烯（LLDPE）生产中的重要共聚单体。生产1-己烯和1-辛烯的传统方法是乙烯齐聚，该方法会产生多种线性α-烯烃（LAOs）。虽然存在几种通过乙烯三聚生产1-己烯的工艺，但迄今为止，选择性生产1-辛烯的类似路线一直难以实现。我们首次报道了一种前所未有的乙烯四聚反应，该反应使用铝氧烷活化的铬/((R2)2P)2NR1催化剂体系，以超过70%的选择性生产1-辛烯。
