100
V.R. Elías et al. / Applied Catalysis A: General 381 (2010) 92–100
Table 4
decreased due to its higher decomposition. Under these conditions
the selectivity to 1,2-cyclohexanediol (II) is increased as a result of
epoxide ring opening.
Product selectivity for the cyclohexene oxidation by H2O2 over the Fe-containing
mesoporous molecular sieves.
Sample
C6H10/H2O2
(mol/mol)
Products selectivity (mol%)
Acknowledgements
I
II
III
IV
G.A.E., S.G.C., K.S. and M.I.O. CONICET Researchers; V.R.E. and
A.M.N. CONICET Doctoral Fellowships. This work was supported by
the CONICET, UTN-FRC and Secyt-UNC of Argentina. The authors are
grateful to Dra. Claudia Rodriguez Torres (UNLP-La Plata, Argentina)
for Mössbauer Effect Spectroscopy results.
Fe/M(2) (3.78)
Fe/M(2) (3.78)
Fe/M(2)R (3.65)
Fe/M(5) (6.39)
Fe/M(5) (6.39)
Fe/M(5)R (6.45)
4:1
2:1
4:1
4:1
2:1
4:1
6.35
6.10
10.87
5.64
5.77
10.07
39.49
51.51
5.22
43.79
48.44
10.63
39.13
30.35
56.88
37.74
33.69
58.93
13.53
9.98
24.67
11.73
9.93
18.42
Reaction conditions: temperature: 343 K; reaction time: 5 h; catalyst = 9.79 wt.% of
the substrate. The Fe content determined by AA is indicated between parentheses.
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4. Conclusions
Iron-containing mesoporous molecular sieves have been suc-
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as precursor. It was found that the iron content and the reduction
treatment carried out under H2 flow strongly affect the structural
properties and the nature of the Fe-containing species obtained,
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Fe3O4 and metallic iron) as it is evidenced by XRD, DRUV–vis and
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