Selective Dimerization of Ethylene to 1-Butene with a Porous Catalyst
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Dinca_Selective dimerization.pdf
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Author(s)
Metzger, Eric Daniel
Brozek, Carl Kavanaugh
Comito, Robert J
Dinca, Mircea
Date Issued
February 2016
Journal
ACS Central Science
Publisher
American Chemical Society (ACS)
Citation
Metzger, Eric D. et al. “Selective Dimerization of Ethylene to 1-Butene with a Porous Catalyst.” ACS Central Science 2.3 (2016): 148–153. © 2016 American Chemical Society
Version
Final published version
Abstract
Current heterogeneous catalysts lack the fine steric and electronic tuning required for catalyzing the selective dimerization of ethylene to 1-butene, which remains one of the largest industrial processes still catalyzed by homogeneous catalysts. Here, we report that a metal–organic framework catalyzes ethylene dimerization with a combination of activity and selectivity for 1-butene that is premier among heterogeneous catalysts. The capacity for mild cation exchange in the material MFU-4l (MFU-4l = Zn[subscript 5]Cl[subscript 4](BTDD)[subscript 3], H[subscript 2]BTDD = bis(1H-1,2,3-triazolo[4,5-b],[4′,5′-i])dibenzo[1,4]dioxin) was leveraged to create a well-defined and site-isolated Ni(II) active site bearing close structural homology to molecular tris-pyrazolylborate complexes. In the presence of ethylene and methylaluminoxane, the material consumes ethylene at a rate of 41,500 mol per mole of Ni per hour with a selectivity for 1-butene of up to 96.2%, exceeding the selectivity reported for the current industrial dimerization process.
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
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DOI of Published Version
https://doi.org/10.1021/acscentsci.6b00012
