Conversion of Mo, Cu, and Fe sulfides and Fe and Cu oxides induced by gas-phase chain reactions

A new principle of performing the chemical gas-solid reactions is proposed. Gas-phase chain reactions producing free radicals and atoms are shown to induce chemical conversions in solids that occur at high rates at reduced temperatures. The reductive transformations of sulfides and oxides of molybdenum, copper, iron and other metals, as well as the chloride sublimation of various compounds (iron and titanium oxides, metallurgical slags, metal sulfides, etc.) under the action of gas-phase chain reactions are conducted and examined.