INTERACTIONS OF NO AND SO2 WITH IRON DEPOSITED ON SILICA

The interactions of NO and SO//2 with both clean and iron-deposited, single-crystal surfaces of SiO//2 at temperatures of 298, 473, and 673 degree K were studied using X-ray photoelectron spectroscopy. Neither NO nor SO//2 showed any reaction with clean SiO//2 at the three temperatures studied. The iron that was deposited onto the SiO//2 surface remained in the metallic state. Both NO and SO//2 interacted with this iron-covered silica (Fe/SiO//2). The total amount of adsorbed gas increased with increased iron coverage.