Synthesis and characterization of Co(II) substituted Keggin-type polyoxometalates as novel catalysts for the hydroformylation of 1-hexene in a thermomorphic solvent system
Author(s)
Type
Journal Article
Abstract
Polyoxometalates (POMs) are a unique class of metal oxides, being of huge interest for the catalysis society. CoII-substituted phosphomolybdate POMs (namely H7[PCoMo11O40], H11[PCo2Mo10O40] and H15[PCo3Mo9O40]) have been successfully synthesized for the first time. The structure of the new CoII substituted POMs was solved by single-crystal X-ray diffraction as well as vibrational (FT-IR and Raman) and nuclear magnetic/electron paramagnetic resonance (NMR and EPR) spectroscopy and found to be of the Keggin-type. The Co-POMs were then applied as molecular catalysts for the hydroformylation of 1-hexene in a thermomorphic solvent mixture of water and 1-butanol. This is the very first example of a 1st row transition metal POM acting as a hydroformylation catalyst achieving 46 % heptanal yield. The best results were obtained using H11[PCo2Mo10O40] as a catalyst at 140 °C, 150 bar CO/H2 1 : 2, and a reaction time of 4 h, paving the way for new POM-based catalysts in hydroformylation reactions.
Date Issued
2024-08-26
Date Acceptance
2024-03-01
Citation
ChemCatChem, 2024, 16 (16)
ISSN
1867-3880
Publisher
Wiley
Journal / Book Title
ChemCatChem
Volume
16
Issue
16
Copyright Statement
© 2024 The Authors. ChemCatChem published by Wiley-VCH GmbH
This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.
This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.
Identifier
https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/cctc.202400395
Subjects
AMINOPEPTIDASE
Chemistry
Chemistry, Physical
COBALT
ELECTROCHEMISTRY
FORMS
HETEROPOLY ACIDS
OXIDATION
PHOSPHOMOLYBDATES
Physical Sciences
REDOX PROPERTIES
Science & Technology
SPECTROSCOPY
W-183 NMR
Publication Status
Published
Article Number
e202400395
Date Publish Online
2024-03-21