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Title: Stabilized Vanadium Catalyst for Olefin Polymerization by Site Isolation in a Metal–Organic Framework

Journal Article · · Angewandte Chemie (International Edition)
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  1. Department of Chemistry Massachusetts Institute of Technology 77 Massachusetts Avenue Cambridge MA 02139 USA
  2. Davidson School of Chemical Engineering Purdue University 480 Stadium Mall Dr. West Lafayette IN 47907 USA
  3. Aramco Research Center— Boston, Aramco Services Company 400 Technology Square Cambridge MA 02139 USA
  4. Department of Chemistry Eugene F. Merkert Chemistry Center Boston College Chestnut Hill MA 02467 USA

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‐4 l , 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.

Sponsoring Organization:
USDOE
OSTI ID:
1439486
Journal Information:
Angewandte Chemie (International Edition), Journal Name: Angewandte Chemie (International Edition) Vol. 57 Journal Issue: 27; ISSN 1433-7851
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
Germany
Language:
English
Citation Metrics:
Cited by: 64 works
Citation information provided by
Web of Science

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