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- Title
Epoxidation of 1-butene to 1,2-butene oxide by transition metal disubstituted P-W-Mo ternary heteropoly quaternary ammonium salts.
- Authors
Wang, Meng; Wang, Panpan; Tian, Qingwen; Liu, Jiahui; Deng, Jinquan; Li, Naixu; Zhou, Jiancheng
- Abstract
A series of transitional metal disubstituted ternary heteropoly quaternary ammonium salts, [TPA]H[PWMoMO(HO)] (M = Mn, Co, Ni, Cu), were prepared by the reaction of the anion PWMoO and the corresponding salts of the transitional metal in water, characterized by FI-IR, UV-Vis, XRD and TGA spectra, and appied to the epoxidation of 1-butene to 1,2-butene oxide (BO). The influences of temperature, reaction time, HO concentration and catalyst concentration on the epoxidation of 1-butene were studied in the acetonitrile/hydrogen peroxide catalytic system. The variation ranges of these parameters ensuring a high HO conversion and high selectivity of BO were established. It can be observed that the catalytic activity decreases in the order PWMoMn > PWMoCo > PWMoNi > PWMoCu. The best conversion of HO and selectivity toward BO were achieved under optimized conditions: reaction time = 2 h, reaction temperature = 50 °C, HO concentration = 0.5 mol/L and a catalyst concentration of 2.5 g/L. In particular, the catalyst PWMoMn is the most active one for epoxidation of 1-butene to BO (selectivity of BO up to 97.6 %).
- Subjects
EPOXIDATION; AMMONIUM salts; SALT deposits; INTERMEDIATES (Chemistry); CATALYSTS
- Publication
Research on Chemical Intermediates, 2015, Vol 41, Issue 11, p8891
- ISSN
0922-6168
- Publication type
Article
- DOI
10.1007/s11164-015-1936-2