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Hydrogenation of carbon monoxide has been studied at 250℃ under 1 and 10 atm of pressure over rhodium catalysts supported on HY and NaY zeolite, silica, alumina, and titania. The characterization of t...hese supported rhodium catalysts are done by XPS, IR, electron microscopy, and thermal desorption methods. The selectivity and the activity of the catalysts are strongly dependent on the nature of the support and on the state of the rhodium metal on the support surface. Hydrogenation of carbon monoxide at 250℃ under 1 atm gives lower hydrocarbons and carbon dioxide. However, under 10 atm chain growth reaction proceeds with better selectivity for hydrocarbons of carbon atoms 2, 3, and 4, and moreover oxygenated compounds such as ethanol are also produced over Rh-Al_2O_3, Rh-TiO_2, and Rh-SiO_2 catalysts.続きを見る
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