Direct observation of the active center for methane dehydroaromatization using an ultrahigh field [super 95]Mo NMR spectroscopy

Direct observation of different types of molybdenum species on fresh and working Mn/zeolite catalysts by using solid-state NMR is obtained on an ultrahigh field NMR spectrometer. The results have shown that the exchanged Mo species are the active centers for the methane dehydroaromatization (MDA) reaction.