Hydrogen, carbon monoxide and oxygen generation - by reacting metal oxides with sulphur dioxide and carbon dioxide or steam and decomposing metal sulphates obtd

摘要

Thermal generation of H2 and O2 by reacting metal oxides with SO2 and then with CO2, with formation of metal sulphates and CO, or with steam, with formation of metal sulphates and H2, at 200-400 degrees C, under 30-100 atmos. press. The metal sulphates obtd. are converted back to the metal oxides by thermal decompsn. at 800 degrees C, with simultaneous prodn. of SO2 and O2. Oxides of Fe, Mn, Cu, Pb, Sn, ZN, Al, Cr and/or V are prefd. SO2 and CO2 or steam may be used together in 1st step.