Manganese oxide OMS-2 as an effective catalyst for total oxidation of ethyl acetate

Gandhe, A.R.; Rebello, J.S.; Figueiredo, J.L.; Fernandes, J.B.

Manganese oxide OMS-2 as an effective catalyst for total oxidation of ethyl acetate

Gandhe, A.R.; Rebello, J.S.; Figueiredo, J.L.; Fernandes, J.B.

Source : Applied Catalysis B-Environmental. 72(41641); 2007; 129-135.

URI: http://dx.doi.org/10.1016/j.apcatb.2006.10.017
http://irgu.unigoa.ac.in/drs/handle/unigoa/1973

Date: 2007

Document Type: Journal article

Abstract:

This investigation focuses mainly on the use of a synthetic cryptomelane type manganese octahedral molecular sieve, OMS-2, as a catalyst for the total oxidation of ethyl acetate. OMS-2 was found to be a highly efficient catalyst giving 100 percent conversion and selectivity to CO2, the final oxidation product. In addition, it was stable with time on stream and resistant to coking. A mechanism is proposed to explain the high selectivity. Presence of Mn4+-O2- Lewis acid-base pairs, ability of Mn to exist as a redox couple, viz. Mn4+/Mn3+ and availability of facile lattice oxygen, seem to facilitate the oxidation process.

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