Abstract:
:The catalytic synthesis of linear α-olefins from ethylene is a technologically highly important reaction. A synthesis concept allowing the formation of selective products and various linear α-olefin product distributions with one catalyst system is highly desirable. Here, we describe a trimetallic catalyst system (Y-Al-Ni) consisting of a rare earth metal polymerization catalyst which can mediate coordinative chain transfer to triethylaluminum combined with a simultaneously operating nickel β-hydride elimination/transfer catalyst. This nickel catalyst displaces the grown alkyl chains forming linear α-olefins and recycles the aluminum-based chain transfer agent. With one catalyst system, we can synthesize product spectra ranging from selective 1-butene formation to α-olefin distributions centered at 850 gmol-1 with a low polydispersity. The key to this highly flexible linear α-olefin synthesis is the easy tuning of the rates of the Y and Ni catalysis independently of each other. The reaction is substoichiometric or formally catalytic regarding the chain transfer agent.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Gollwitzer A,Dietel T,Kretschmer WP,Kempe Rdoi
10.1038/s41467-017-01507-2subject
Has Abstractpub_date
2017-10-31 00:00:00pages
1226issue
1issn
2041-1723pii
10.1038/s41467-017-01507-2journal_volume
8pub_type
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