Elucidating polymer growth and fragmentation behavior of MOFs in ethylene polymerization by MOF thin films

Yaqi Wu; Joren M. Dorresteijn; Laurens D.B. Mandemaker; Thomas Hartman; Bert M. Weckhuysen

doi:10.1016/j.xcrp.2022.101206

Elucidating polymer growth and fragmentation behavior of MOFs in ethylene polymerization by MOF thin films

Yaqi Wu
, Joren M. Dorresteijn
, Laurens D.B. Mandemaker
, Thomas Hartman
, Bert M. Weckhuysen^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

Abstract

Catalyst fragmentation behavior and polymer particle morphology evolution are two critical factors for obtaining high-quality polyethylene (PE). However, for metal-organic frameworks (MOFs), emerging catalysts for ethylene polymerization, systematic studies related to their fragmentation behavior and PE morphology evolution from early stages are still missing. Here, we provide a strategy by using MOF thin films as 2D model catalysts to elucidate PE growth and fragmentation behavior of MOFs in ethylene polymerization. The morphological evolution and particle expansion processes of the formed PE are observed as a function of polymerization time, which is linked to the morphology of MOFs and the crystallinity of produced PE. Moreover, the fragmentation process is visualized, revealing a combination of layer-by-layer and bisectioning fragmentation modes at very early stages and a dominant bisectioning fragmentation later. The desirable fragmentation behavior of MIL-101 (Cr) and PE growth and morphology indicate the potential of MOFs in ethylene polymerization.

Original language	English
Article number	101206
Pages (from-to)	1-20
Number of pages	20
Journal	Cell Reports Physical Science
Volume	4
Issue number	1
Early online date	Jan 2023
DOIs	https://doi.org/10.1016/j.xcrp.2022.101206
Publication status	Published - 18 Jan 2023

Bibliographical note

Funding Information:
Y.W. acknowledges support from the Dalian Institute of Chemical Physics, Chinese Academy of Sciences , for the Talent Training Project of DICP. We would like to thank Dr. Maarten Jongkind (Utrecht University, UU) for his helpful discussions. We would like to thank Dr. Koen Bossers (UU) for his help to perform the ethylene polymerization experiment and Jan Willem de Rijk (UU) for building the ethylene polymerization setup. This research is sponsored by the Netherlands Organisation for Scientific Research ( NWO ) in the frame of a Gravitation grant ( MCEC , Multi-scale Catalytic Energy Conversion).

Publisher Copyright:
© 2022 The Authors

Funding

Y.W. acknowledges support from the Dalian Institute of Chemical Physics, Chinese Academy of Sciences , for the Talent Training Project of DICP. We would like to thank Dr. Maarten Jongkind (Utrecht University, UU) for his helpful discussions. We would like to thank Dr. Koen Bossers (UU) for his help to perform the ethylene polymerization experiment and Jan Willem de Rijk (UU) for building the ethylene polymerization setup. This research is sponsored by the Netherlands Organisation for Scientific Research ( NWO ) in the frame of a Gravitation grant ( MCEC , Multi-scale Catalytic Energy Conversion).

Funders
Dalian Institute of Chemical Physics, Chinese Academy of Sciences
Netherlands Organisation for Scientific Research (NWO)

Keywords

ethylene polymerization
fragmentation behavior
metal-organic frameworks
micro-spectroscopy
MIL-101 (Cr)
polymer morphology

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Cite this

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title = "Elucidating polymer growth and fragmentation behavior of MOFs in ethylene polymerization by MOF thin films",

abstract = "Catalyst fragmentation behavior and polymer particle morphology evolution are two critical factors for obtaining high-quality polyethylene (PE). However, for metal-organic frameworks (MOFs), emerging catalysts for ethylene polymerization, systematic studies related to their fragmentation behavior and PE morphology evolution from early stages are still missing. Here, we provide a strategy by using MOF thin films as 2D model catalysts to elucidate PE growth and fragmentation behavior of MOFs in ethylene polymerization. The morphological evolution and particle expansion processes of the formed PE are observed as a function of polymerization time, which is linked to the morphology of MOFs and the crystallinity of produced PE. Moreover, the fragmentation process is visualized, revealing a combination of layer-by-layer and bisectioning fragmentation modes at very early stages and a dominant bisectioning fragmentation later. The desirable fragmentation behavior of MIL-101 (Cr) and PE growth and morphology indicate the potential of MOFs in ethylene polymerization.",

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note = "Funding Information: Y.W. acknowledges support from the Dalian Institute of Chemical Physics, Chinese Academy of Sciences , for the Talent Training Project of DICP. We would like to thank Dr. Maarten Jongkind (Utrecht University, UU) for his helpful discussions. We would like to thank Dr. Koen Bossers (UU) for his help to perform the ethylene polymerization experiment and Jan Willem de Rijk (UU) for building the ethylene polymerization setup. This research is sponsored by the Netherlands Organisation for Scientific Research ( NWO ) in the frame of a Gravitation grant ( MCEC , Multi-scale Catalytic Energy Conversion). Publisher Copyright: {\textcopyright} 2022 The Authors",

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N2 - Catalyst fragmentation behavior and polymer particle morphology evolution are two critical factors for obtaining high-quality polyethylene (PE). However, for metal-organic frameworks (MOFs), emerging catalysts for ethylene polymerization, systematic studies related to their fragmentation behavior and PE morphology evolution from early stages are still missing. Here, we provide a strategy by using MOF thin films as 2D model catalysts to elucidate PE growth and fragmentation behavior of MOFs in ethylene polymerization. The morphological evolution and particle expansion processes of the formed PE are observed as a function of polymerization time, which is linked to the morphology of MOFs and the crystallinity of produced PE. Moreover, the fragmentation process is visualized, revealing a combination of layer-by-layer and bisectioning fragmentation modes at very early stages and a dominant bisectioning fragmentation later. The desirable fragmentation behavior of MIL-101 (Cr) and PE growth and morphology indicate the potential of MOFs in ethylene polymerization.

AB - Catalyst fragmentation behavior and polymer particle morphology evolution are two critical factors for obtaining high-quality polyethylene (PE). However, for metal-organic frameworks (MOFs), emerging catalysts for ethylene polymerization, systematic studies related to their fragmentation behavior and PE morphology evolution from early stages are still missing. Here, we provide a strategy by using MOF thin films as 2D model catalysts to elucidate PE growth and fragmentation behavior of MOFs in ethylene polymerization. The morphological evolution and particle expansion processes of the formed PE are observed as a function of polymerization time, which is linked to the morphology of MOFs and the crystallinity of produced PE. Moreover, the fragmentation process is visualized, revealing a combination of layer-by-layer and bisectioning fragmentation modes at very early stages and a dominant bisectioning fragmentation later. The desirable fragmentation behavior of MIL-101 (Cr) and PE growth and morphology indicate the potential of MOFs in ethylene polymerization.

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Elucidating polymer growth and fragmentation behavior of MOFs in ethylene polymerization by MOF thin films

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