Title: Cyclohexane oxidation with tertiary-butylhydroperoxide catalyzed by iron-phthalocyanines homogeneously and occluded in Y zeolite
Authors: Parton, RF ×
Peere, GJ
Neys, PE
Jacobs, Pierre
Claessens, Rudi
Baron, GV #
Issue Date: 1996
Series Title: Journal of molecular catalysis. A: Chemical vol:113 issue:3 pages:445-454
Abstract: Oxidation of cyclohexane to cyclohexanol and cyclohexanone at room temperature is achieved on iron phthalocyanine complexes encapsulated in Y zeolites with tertiary butyl hydroperoxide as oxygen atom donor. Sorption measurements show a high preference of the catalyst for polar reagents and products like acetone, cyclohexanol, cyclohexanone and tertiary butyl hydroperoxide. Therefore, the mode of addition of peroxide and the use of solvent have a strong influence on the reaction rate. A fed-batch type set-up with slow addition of the peroxide to the reaction mixture is proven to be the best system, minimizing the decomposition reaction of the peroxide and maximizing its selective oxidation reaction, Conversion of cyclohexane with iron-phthalocyanines encapsulated in Y zeolites is relatively high (up to 25%) with efficiencies between 40 and 10% and high selectivities for cyclohexanone (95%). Cyclohexanol is converted up to 70% with efficiencies around 70%, because the alcohol function is more sensitive to oxidation and sorption effects favor cyclohexanol compared to cyclohexane. The iron-phthalocyanine Y zeolites are regenerable for both reactions. Activities obtained by the zeolite encapsulated iron-phthalocyanines are higher than the homogeneous complexes which are oxidatively destroyed under reaction conditions and therefore not regenerable.
ISSN: 1381-1169
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Centre for Surface Chemistry and Catalysis
× corresponding author
# (joint) last author

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