Highly efficient and selective oxidation of various substrates under mild conditions using a lanthanum-containing polyoxometalate as catalyst

Authors:  Shen Zhao, Yueqing Jia, Yu-Fei Song

Abstract:
A lanthanum-containing polyoxometalate (POM) of DA11[La(PW11O39)2] (denoted as DA-La(PW11)2; DA= Decyltrimethylammonium cation)is highly efficient and selective for oxidation of various substrates including alkenes, alkenols, sulfides, silane and alcohol with only one equiv. H₂O₂ as oxidant at 25^◦C, and the POM catalyst can be easily recovered and reused for ten times without obvious decrease of catalytic activity and the yields for catalyst recovery are all above 95%. The epoxidation of cis-cyclooctene proceeds efficiently in 98% yield with only 0.08 mol% of DA-La(PW11)2, and the turnover number (TON) can reach as high as 1200 at 25^◦C.

Keywords:
Polyoxometalate
Lanthanum
Oxidation

Published in: Applied catalysis A: General  (Volume 453, Pages 1-402, 26 February 2013)

Publisher: Elsevier

ISSN Information: 0926-860X

Highly efficient and selective oxidation of various substrates under mild conditions using a lanthanum-containing polyoxometalate as catalyst

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