IR STUDIES OF NH//3, PYRIDINE, CO, AND NO ADSORBED ON TRANSITION METAL OXIDES.

Infrared spectroscopy has been used to study practically all kinds of adsorbates, including basic molecules of NH//3 and pyridine, carbon oxides (CO and CO//2), nitrogen oxides (NO, N//2O, NO//2), alkenes, alcohols, and acids. In this review, emphasis is placed on the molecules that yield information on the acid-base and on the coordination properties of the surface sites on transition metal oxides. Thus the discussions are confined primarily to studies involving NH//3, pyridine, CO, and NO. Emphasis is also placed on work published after 1970 because an excellent account of the literature before then has already appeared.