Sa. Chavan et al., A novel, zeolite-encapsulated mu(3)-oxo Co/Mn cluster catalyst for oxidation of para-xylene to terephthalic acid, CHEM COMMUN, (12), 2001, pp. 1124-1125
Trinuclear, mu (3)-oxo mixed metal acetato complexes, [CoMn2(mu (3)-O)(MeCO
2)(6)(py)(3)] (py = pyridine) encapsulated in zeolite HY, exhibit high cata
lytic efficiency in the selective aerial oxidation of para-xylene to tereph
thalic acid; interestingly, the formation of 4-carboxybenzaldehyde, the wor
risome impurity in the conventional process, is suppressed significantly ov
er these solid catalysts.