PNNL

Abstract

The chemistry of methanol was explored on the vacuum annealed Ti02(110) surface, with and without the presence of coadsorbed water and oxygen, using temperature programmed desorption (TPD), high resolution electron energy loss spectroscopy (HREELS), static secondary ion mass spectrometry (SSIMS) and low energy electron diffraction (LEED). The higher surface coverage of methozyl then resulted in a disproportionation reaction to form CH3OH and H2CO above 600 K. In contrast, low temperature exposrue of the vacuum annealed TiO2 surfacte to )2 resulted in low temperature state of O2 (presumably an O2 species) that oxidized of CH3OH to H2CO by C-H bond cleavage.