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The basicity of alkali exchanged zeolites was characterized by chloroform adsorption using XPS spectroscopy. Chloroform is mainly adsorbed on the basic sites (framework oxygen) through its hydrogen atom. The results of C12p deconvolution show that in zeolites chloroform is adsorbed only on the more strongly basic sites associated with the framework oxygens directly adjacent to alkali cations. The...
Infrared spectroscopic evidence is presented for the formation of linearly bonded CO species, as a result of surface interaction between H 2 and CO 2 at room temperature over silicalite-supported Pt. Comparison with direct CO adsorption results suggests that the active sites for this CO 2 reaction are the corner or step sites on platinum particles. The CO formed on these active...
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