Reducing Them Down To Charge Them Up: Low Temperature Catalyst Activation
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acscentsci.6b00223.pdf
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215.96 KB
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Adobe PDF
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Author(s)
Schrock, Richard Royce
Date Issued
August 2016
Journal
ACS Central Science
Publisher
American Chemical Society (ACS)
Citation
Schrock, Richard R. “Reducing Them Down To Charge Them Up: Low Temperature Catalyst Activation.” ACS Central Science 2, 8 (August 2016): 495–496 © 2016 American Chemical Society
Version
Final published version
Abstract
The largest industrial application of olefin metathesis today is the synthesis of propylene from ethylene and butenes(1) employing WO₃ on SiO₂, a relatively long-lived and regenerable catalyst that operates at 350–400 °C. It is widely proposed that high temperatures are required because the percentage of metal sites actually involved in the metathesis reaction is extremely low, or the reaction that generates alkylidenes is not a high yield reaction, or both. A recent paper by Copéret, Mashima, and co-workers(2) tackles head-on the question concerning how in WO₃/SiO₂ catalysts the alkylidene is formed from an olefin alone. Hundreds of papers have attempted to answer this question, although one has to admit that there may not be a single answer for all supported oxide catalysts or all olefins.
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1021/ACSCENTSCI.6B00223
