Stabilized Vanadium Catalyst for Olefin Polymerization by Site Isolation in a Metal-Organic Framework
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paper74.pdf
Description
Accepted version
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1.58 MB
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Author(s)
Comito, Robert J
Wu, Zhenwei
Zhang, Guanghui
Lawrence, John A.
Korzynski, Maciej Damian
Kehl, Jeffrey A.
Miller, Jeffrey T.
Dinca, Mircea
Date Issued
June 2018
Journal
Angewandte Chemie International Edition
Publisher
Wiley
Citation
Comito, Robert J., et al. "Stabilized Vanadium Catalyst for Olefin Polymerization by Site Isolation in a Metal-Organic Framework." Angewandte Chemie International Edition 57, 27 (June 2018): p. 8135-39 doi 10.1002/ANIE.201803642 ©2018 Author(s)
Version
Author's final manuscript
Abstract
Vanadium catalysts offer unique selectivity in olefin polymerization, yet are underutilized industrially owing to their poor stability and productivity. Reported here is the immobilization of vanadium by cation exchange in MFU-4l, thus providing a metal–organic framework (MOF) with vanadium in a molecule-like coordination environment. This material forms a single-site heterogeneous catalyst with methylaluminoxane and provides polyethylene with low polydispersity (PDI≈3) and the highest activity (up to 148 000 h−1) reported for a MOF-based polymerization catalyst. Furthermore, polyethylene is obtained as a free-flowing powder as desired industrially. Finally, the catalyst shows good structural integrity and retains polymerization activity for over 24 hours, both promising attributes for the commercialization of vanadium-based polyolefins.
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
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DOI of Published Version
https://doi.org/10.1002/ANIE.201803642
