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´ ´
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give a light yellow solid, which was washed with distilled
water until no Fe3? ions could be detected in the filtrate
(i.e., until the filtrate was colorless). The solid product was
then dried at 100 °C for 24 h before being calcined at
600 °C for 4 h to give the final product, Fe1/3[Zr2(PO4)3],
as a pale yellow solid (Scheme 2).
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General experimental procedure for the oxidation
reaction
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¨ ¨ ¨
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Substrate (5 mmol) and ZPFe (0.5 mol %) were added into
a 25 cm3 two-necked flask. It was heated in an oil bath to
50 °C and then, 30 % H2O2 (0.015 mol) was added slowly
with continuous stirring for the specified time. The reaction
progress was monitored by GC. At the end, the reaction
mixture was cooled to room temperature and then, the
catalyst was removed from the reaction mixture by cen-
trifuge. After that, the organic layer was separated from the
aqueous phase by extraction with n-hexane and dried over
anhydrous CaCl2. The identity of reaction products was
1
confirmed by FT-IR, GC–MS, and H NMR.
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Catal 32:1719
Recyclability studies of catalyst
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31. Ali SR, Chandra P, Latwal M, Jain SK, Bansal VK, Singh SP
(2011) Chin J Catal 32:1844
To examine the recyclability of the catalyst, the used ZPFe
was recovered from the reaction media and re-used. For
recycling, after the first use, the catalyst was separated
from the reaction mixture by centrifugation, washed se-
quentially with ethanol and water before being dried at
110 °C for 2 h, and then activated at 450 °C for 2 h.
32. Zhang H, Liu Y, Zhang X (2011) Chin J Catal 32:1693
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34. Zhou X, Ji H (2012) Chin J Catal 33:1906
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36. Su H, Yang C (2014) Chin J Catal 35:1224
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38. Zhou C, Liu Y (2010) Chin J Catal 31:656
39. Mahdavi V, Hasheminasab HR, Abdollahi S (2010) J Chin Chem
Soc 57:189
Acknowledgments We gratefully acknowledge the funding support
received for this project from the Isfahan University of Technology
(IUT), IR, Iran.
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L (2014) Chin J Catal 35:945
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54:1257
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10:979
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