Ethylene dimerization and oligomerization to butene-1 and linear α-olefins

2‐Benzoxazolyl‐6‐[1‐(arylimino)ethyl]pyridyliron(II) Chlorides as Ethylene Oligomerization Catalysts

“…Highly active catalytic systems are of great interest for the preparation of α-olefins, [24] and this is the basis of a joint venture between PetroChina and DuPont in the ironcatalyzed oligomerization of ethylene. [25] Finding oligomerization catalysts with improved efficiency continues therefore to be of great importance.…”

Cobalt(II) complexes bearing 2-imino-1,10-phenanthroline ligands: synthesis, characterization and ethylene oligomerization

“…The asymmetric unit of complex 2, however, contains the halves of two independent, nearly identical molecules ( Fig. 1) whereas one molecular structure can be found in the asymmetric unit of complex 3,8,respectively). Their selected bond lengths and bond angles are listed in Tables 1 and 2.…”

“…Linear α-olefin oligomers with relatively short chain lengths are commonly used as comonomers for the preparation of linear lowdensity polyethylene (LLDPE). The selective dimerization reaction was first achieved in 1954 by Zieger and Martin [2] and later the selectivity was improved by modification of the catalysts and optimization of the reaction conditions [3]. Until now, many efforts are still devoted to the development of highly active and selective ethylene oligomerization catalysts.…”

Oligomerization of Monoolefins by Homogeneous Catalysts

“…Bis-imino-pyridine iron complex used for 1-butene dimerization. atoms and represent commercially valuable products [10,11,8]. The production of alpha-olefins was initially realized by the "stoichiometric" Alfen process [40,41], whereby the chain-growth reaction on aluminum was followed by the liberation of the product in a separate reactor at higher temperatures.…”