Abstract
The catalytic oxidation of cis-2-butene and propylene with molecular oxygen in the presence of a well-defined surface coordination compound, (≡SiO)2Mo(=O)2, affords acetaldehyde. Using a cis-2-butene/O2 feed at 350-400 °C, the reaction yields a conversion of approximately 10% and an acetaldehyde selectivity of approximately 70%. This performance is maintained up to an experimental time of 20 h in a continuous flow reactor. The Mo(bis-oxo) surface compound was fully characterized by multiple spectroscopic techniques as well as surface microanalysis. The results from quantum mechanics calculations indicate that the reaction proceeds via [2 + 2] cycloaddition/cycloelimination steps with the formation of metalla-oxacyclobutane intermediates, analogous to the Chauvin mechanism in olefin metathesis.
Original language | English (US) |
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Pages (from-to) | 7549-7555 |
Number of pages | 7 |
Journal | ACS Catalysis |
Volume | 8 |
Issue number | 8 |
DOIs | |
State | Published - Aug 3 2018 |
Bibliographical note
Publisher Copyright:© 2018 American Chemical Society.
ASJC Scopus subject areas
- Catalysis
- General Chemistry