Structures of methanol molecules chemisorbed on cobalt cluster ions, Con + (n=2-6), were investigated by infrared photodissociation (IR-PD) spectroscopy in the wavenumber range of 3400-4000 cm-1. All the IR-PD spectra measured exhibit an intense peak in the region of the OH stretching vibration. In the IR-PD spectra of Co2+ (CH3OH)2,3 and Co3+ (CH 3OH)3, weak peaks were observed additionally in the vicinity of 3000 cm-1, being assignable to the CH stretching vibration. The comparison of the experimental results with the calculated ones leads us to conclude that (1) molecularly chemisorbed species, Co n+ (CH3OH)m (m=1-3), and dissociatively chemisorbed species, Con+ (CH 3OH)m-1 (CH3) (OH), are dominant and (2) the methanol dehydrogenation proceeds via an intermediate, Con + (CH3) (OH).
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Physical and Theoretical Chemistry