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Highly tuneable catalyst supports for single-site ethylene polymerization

DOI: 10.1021/cm503433q DOI Help

Authors: Jean Charles Buffet (University of Oxford) , Nidwaree Wanna (University of Oxford) , Thomas A Q Arnold (University of Oxford) , Emma Gibson (University College London) , Peter Wells (University College London; RC-Harwell) , Qiang Wang (University of Oxford) , Jonggol Tantirungrotechai (Mahidol University) , Dermot O'hare (University of Oxford)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Chemistry of Materials

State: Published (Approved)
Published: February 2015
Diamond Proposal Number(s): 8071

Open Access Open Access

Abstract: A new class of tuneable crystalline solid supports for metal complexes have been synthesised and used for ethylene polymerization. We have developed a family of high surface area, highly dispersible layered double hydroxides (AMO-LDHs) which, on treatment with alkyl aluminum activators, are able to support metallocene and non-metallocene complexes to make active catalyst systems for the slurry polymerization of ethylene. We show that the chemical composition of the AMO-LDH support can dramatically affect catalyst activity, polymer morphology, and polymer microstructure. A Zr K-edge EXAFS study of these active catalysts has enabled us to observe a metallocene-derived single-center catalytic species in close proximity to the support.

Subject Areas: Chemistry

Instruments: B18-Core EXAFS

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