We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Catalytic properties of heteropoly compounds in 1,3-butadiene oxidation with hydrogen peroxide.
- Authors
Kuznetsova, L.; Kuznetsova, N.; Maksimovskaya, R.; Koshcheeva, O.; Utkin, V.
- Abstract
The homogeneous oxidation of 1,3-butadiene (BD) in HO-HPC-CHCN (HPC = heteropoly compound) solutions has been investigated. The route of the reaction depends on the nature of the metal capable of coordinating with active oxygen in the HPC. The products of radical BD oxidation (acrolein, 3-butene-1,2-diol, 2-butene-1,4-diol, furan) form in the presence of HPMoVO ( n = 1, 2) acids. 3,4-Epoxy-1-butene (EB) and acrolein + furan, which form in equal amounts in the presence of the ( n-BuN)PWOFe(OH) salt, result, respectively, from the electrophilic addition of hydrogen peroxide to BD and from radical BD oxidation on iron-oxygen complexes in the HPC composition. The reaction carried out in the presence of ( n-BuN){PO[WO(O)]}, ( n-BuN)NaHPWO, or (EMIm)NaHPWO yields EB with high selectivity on the reacted BD basis (up to 97%) and HO (about 100%). The formation and conversion of the phosphotungstate peroxo complexes PWO( n = 2, 3, 4) that are active in BD epoxidation have been investigated by PNMR spectroscopy. The role of the tetrabutylammonium and ethylmethylimidazolium cations in the formation of these complexes has been demonstrated.
- Subjects
HETEROCHAIN polymers; BUTADIENE; HYDROGEN peroxide; CATALYSTS; CHEMICAL reactions; COMPLEX compounds; NUCLEAR magnetic resonance spectroscopy
- Publication
Kinetics & Catalysis, 2013, Vol 54, Issue 4, p420
- ISSN
0023-1584
- Publication type
Article
- DOI
10.1134/S0023158413040071