EXAFS study of γ-Mo_2N and Mo nitrides supported on zeolites

摘要

By analysis of the extended X-ray absorption fine structure (EXAFS) of the Mo K-absorption edge, the structural information of both oxidic and nitrided Mo catalysts supported on zeolites was obtained. The supported MoO_3 samples show three peaks in the radial structure function (RSF). The first two peaks represent the nearest Mo-O coordination shell and the ratio of the first peak tot he second one is much larger than that of the MoO_3 crystallites, which suggests that the MoO_3 supported on zeolites has a compact structure than the unsupported one.