Catalytic oxidation of cyclohexane over Cu-Zn-Cr ternary spinel systems |
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Authors: | Kochurani George and Sankaran Sugunan |
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Institution: | (1) Department of Applied Chemistry, Cochin University of Science and Technology, Cochin, Kerala, 682 022, India |
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Abstract: | Spinel systems with the composition of Cu1−xZnxCr2O4 x = 0 CCr, x = 0.25 CZCr-1, x = 0.5 CZCr-2, x = 0.75 CZCr-3 and x = 1 ZCr] were prepared by homogeneous co-precipitation
method and were characterized by X-ray diffraction (XRD) and FT-IR spectroscopy. Elemental analysis was done by EDX, and surface
area measurements by the BET method. The redox behavior of these catalysts in cyclohexane oxidation at 243 K using TBHP as
oxidant was examined. Cyclohexanone was the major product over all catalysts with some cyclohexanol. 69.2% selectivity to
cyclohexanol and cyclohexanone at 23% conversion of cyclohexane was realized over zinc chromite spinels in 10 h. |
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Keywords: | Spinel chromites cyclohexane oxidation |
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