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The Application of Transmission Spectroscopy to Surface
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acetylene adsorbed adsorbed molecules adsorbed species adsorption adsorption of carbon adsorption process alumina alumina surface ammonia atoms attributed bands due benzene Blyholder bond carbon dioxide carbon monoxide carbonyl Catalysis catalytic activity cation causes Chem chemisorbed chemisorption completely dehydration desorption effect Eischens electron ethylene evacuation extinction coefficient force constant formation formed Fripiat give rise hexachloroacetone hydrogen hydrogen-bonded increase indicates infrared spectroscopy infrared spectrum intensity interaction Lewis acid Lewis acid sites linear material molecular sieve nickel nickel carbonyl nitrogen observed obtained occur OH groups OH stretching oxygen peak Peri perturbed Phys physically adsorbed pore porous glass presence pressure protonic pyridine radiation react reaction Redrawn from Reference region removed room temperature rotational sample shown in Fig shows silanol silanol groups silica gel silica surface silica-alumina silica-alumina surface spectra stretching frequency stretching vibration structure studies surface coverage surface hydroxyl groups surface species symmetrical technique vapor vibration vibrational frequency workers Yates