Isolated, well-defined organovanadium(iii) on silica: single-site catalyst for hydrogenation of alkenes and alkynes

Isolated, well-defined organovanadium(iii) on silica: single-site catalyst for hydrogenation of alkenes and alkynes

A well-defined, isolated, single-site organovanadium(iii) catalyst on SiO [(SiO )V(Mes)(THF)] was synthesized via surface organometallic chemistry, and fully characterized using a combination of analytical and spectroscopic techniques (EA, ICP, H NMR, TGA-MS, EPR, XPS, DR-UV/Vis, UV-Raman, DRIFTS, X...

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Veröffentlicht in:Chemical communications (Cambridge, England) England), 2017-06, Vol.53 (53), p.7325-7328
Hauptverfasser: Sohn, H, Camacho-Bunquin, J, Langeslay, R R, Ignacio-de Leon, P A, Niklas, J, Poluektov, O G, Liu, C, Connell, J G, Yang, D, Kropf, J, Kim, H, Stair, P C, Ferrandon, M, Delferro, M
Format: Artikel
Sprache:eng
Schlagworte:
Alkenes
Alkynes
Catalysts
Hydrogenation
INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Mathematical analysis
Poisoning
Silicon dioxide
X-ray photoelectron spectroscopy
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Zusammenfassung:A well-defined, isolated, single-site organovanadium(iii) catalyst on SiO [(SiO )V(Mes)(THF)] was synthesized via surface organometallic chemistry, and fully characterized using a combination of analytical and spectroscopic techniques (EA, ICP, H NMR, TGA-MS, EPR, XPS, DR-UV/Vis, UV-Raman, DRIFTS, XAS). The catalyst exhibits unprecedented reactivity in liquid- and gas-phase alkene/alkyne hydrogenation. Kinetic poisoning experiments revealed that 100% of the V sites are active for hydrogenation.
ISSN:1359-7345
1364-548X
DOI:10.1039/c7cc01876b