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Dioxomolybdenum(VI) complex covalently attached to amino‐modified graphene oxide: heterogeneous catalyst for the epoxidation of alkenes
Author(s) -
Li Zhifang,
Wu Shujie,
Zheng Dafang,
Liu Jiayin,
Liu Heng,
Lu Haiming,
Huo Qisheng,
Guan Jingqi,
Kan Qiubin
Publication year - 2014
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.3127
Subject(s) - chemistry , graphene , catalysis , cyclooctene , oxide , covalent bond , metal salen complexes , transition metal , polymer chemistry , heterogeneous catalysis , combinatorial chemistry , organic chemistry , nanotechnology , materials science
Transition metal salen complex MoO 2 –salen was successfully tethered onto amino‐functionalized graphene oxide (designated as MoO 2 –salen–GO), which was tested in the epoxidation of various alkenes using tert ‐butylhydroperoxide or H 2 O 2 as oxidant. Characterization results showed that dioxomolybdenum(VI) complex was successfully grafted onto the amino‐functionalized graphene oxide and the structure of the graphene oxide was well preserved after several stepwise synthesis procedures. Catalytic tests showed that heterogeneous catalyst MoO 2 –salen–GO was more active than its homogeneous analogue MoO 2 –salen in the epoxidation of cyclooctene due to site isolation. In addition, the MoO 2 –salen–GO catalyst could be reused three times without significant loss of activity. Copyright © 2014 John Wiley & Sons, Ltd.