By thermo-programmed oxidation (TPO) and thermo-programmed reduction (
TPR) methods the interaction of methane and oxygen with the Li-promote
d and unpromoted surface of manganese oxide catalysts was investigated
. The conclusions were made about the character of surface interaction
. The promotion of manganese oxide led to the variation of Mn-O bond c
haracter and to the increase of the catalytic activity of the system i
n the oxidative condensation reaction. (C) 1998 Elsevier Science B.V.
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