Catalytic oxidation of benzyl alcohol by Al3+ doped manganese oxide of the type OMS-2 using molecular oxygen or air

Rebello, J.S.; Naik, S.P.; Fernandes, J.B.

Catalytic oxidation of benzyl alcohol by Al3+ doped manganese oxide of the type OMS-2 using molecular oxygen or air

Rebello, J.S.; Naik, S.P.; Fernandes, J.B.

Source : Indian Journal of Chemistry Section A-Inorganic Bio-Inorganic Physical Theoretical and Analytical Chemistry. 43(8); 2004; 1676-1679.

URI: http://nopr.niscair.res.in/handle/123456789/20413
http://irgu.unigoa.ac.in/drs/handle/unigoa/1598

Date: 2004

Document Type: Journal article

Abstract:

The oxidation of benzyl alcohol to benzaldehyde using molecular oxygen over manganese oxides of the type OMS-2 is reported. It is observed that Al3+- doped OMS-2 has significantly higher activity (similar to 58 percent) as compared to pure OMS-2 (similar to 43 percent). The catalysts are characterized by XRD, IR, H+ ion exchangeability, thermal analysis, BET surface area and temperature programmed desorption (TPD) of ammonia. Catalytic activity depends on the ease of availability of lattice oxygen and presence of Mn4+/Mn3+ redox couple. The activity of the catalysts has been correlated with various physicochemical characteristics, like surface area and concentration of acid sites.

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