Diatomic adsorbates

On the basis of IR studies and site-blocking experiments, Sachtler et al. suggested that diatomic adsorbed oxygen species react selectively with ethylene to yield ethylene oxide904 908 [Eq. (9.169)] atomic oxygen formed, in turn, reacts with ethylene to result in complete oxidation [Eq. (9.170)] ... 

In this section we discuss the accuracy of the BOC-MP projections concerning the activation barriers of dissociation and recombination surface reactions. We shall begin with diatomic adsorbates AB A + B. 

Complex adsorbates and substrates. The majority of LEED studies have concentrated on monatomic or diatomic adsorbates on low-index surfaces but attention is now being turned to less simple systems. This effort is illustrated by the work of Somorjai and his colleagues who have examined acetylene and ethylene on Pt(l 11), normal paraffins and cyclohexane on Pt(l 11) and Ag(l 11), benzene on Pt(l 11)," ... 

Molecular diatomic adsorbates CO and N2 on metals NO, CN, O2 on metals Diatomic molecules on alloys Diatomic molecules on semiconductors... 

Percolating the solvent in a Florisil or diatom adsorbent column generally eliminates froml 10 to 30% of the polar compounds. At the same time it can also remove a fraction of the j HC. Fig. 4 shows two exceptional examples (with the standard Florisil load quadrupled). 

Table 4. Fundamental and overtone frequencies, full-widths at half-height (fwhh), vibrational constants (in cm and dissociation energies De (in eV) of homonuclear diatomics adsorbed in zeolites and compared with the gasphase data.

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