Journal
CATALYSIS LETTERS
Volume 147, Issue 1, Pages 71-81Publisher
SPRINGER
DOI: 10.1007/s10562-016-1896-1
Keywords
Sandwich-type polyoxometalates; Support; Ln-doped TiO2; Nanocomposite; Homogeneous catalyst; Hydrogen peroxide; Oxidation; Sulfides; Alcohols
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Funding
- University of Kurdistan Research Council
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Sandwich-type polyoxometalates of [M-4(XW9O34)(2)](n-) (M = Mn2+, Cu2+, Zn2+, X = Ge4+, P5+, As5+) supported on Ln-doped TiO2 (Ln = Nd3+, Sm3+, Tb3+ and Dy3+) nanoparticles were prepared and their catalytic activities examined for oxidation of sulfides and alcohols. Results show that the catalytic activities of new nanocomposites were significantly higher than homogeneous conditions with corresponding sandwich-type polyoxometalates. The best results obtained by [Mn-4(XW9O34)(2)](10-) (X = P5+, As5+) supported on Tb/TiO2 which were characterized by various techniques. The catalysts can be easily recovered and reused for at least five times without obvious decrease of catalytic activities and the structures of the catalysts remain unchanged after recycling and the yields for catalyst recovery are all above 95%. [GRAPHICS]
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