Naslov
A Homogeneous Mixture Composed of Vanadate, Acid, and TEMPO Functionalized Ionic Liquids for Alchocol Oxidation by H2O2

Autori
Wang, Sa-Sa ; Popović, Zora ; Wu, Hai-Hong ; Liu, Ye

Izvornik
ChemCatChem (1867-3880) 3 (2011), 7; 1208-1213

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
vanadate; TEMPO; catalysis

Sažetak
The functionalized ionic liquids (ILs) of N-n-dodecyl pyridinium vanadate (1), N-(propyl-1-sulfonicacid) pyridinium tetrafluoroborate(2), and 4-(propanoate-2, 2, 6, 6, -tetramethylpiperidine-1-oxyl) pyridinium tetrafluoroborate (5) yielded the compatible IL compositions (ILCs) as a homogenous mixture, which proved to be an efficient catalytic system for oxidation of a wide range of alchocols using H2O2. With the aid of 2 and 5. 1 in (Bpy)BF4 could easily be recovered and reused for at least six runs without a loss in activity. UV/Vis spectroscopic analysis indicated that the role of 2 was to promote theformation of the active peroxo V(V) species, which is responsible for substrate activation, and the role of 5 was to oxidize the low-valent vanadium(II-IV) species to regenerate 1.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA