Abstract
Coadsorption of H 2 and CO on Pd has been studied using TDS and ESD techniques. It has been observed that the presence of 10% CO in the H 2 dosing gas during exposure gives rise to a drastic change in the TDS spectra of H 2 compared to the case when only H 2 is separately adsorbed. Furthermore, significant modifications occur in the ESD energy distribution of CO + and H + as a result of coadsorption of H 2 and CO. These observations are taken as evidence of adsorbate interaction possibly resulting in formation of an HCO surface complex.
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