Abstract
In a flow system and at very low pressures, the reactions of CS2, H2S, SO2, and CCl4, on pure and carburized tungsten ribbons, were studied at 1300–2000° K.In the decomposition of CS2, on pure tungsten, CS and S2 are found—in that of H2S, H2 and S2—in that of SO2, O2 and SO or S2, according to the temperature—CCl4 gives CCl2, Cl2, and Cl. H2, S2, and Cl2 molecules are probably formed by recombination on the walls of atoms produced on the ribbon. With carburized tungsten the formation of S2 and O2 is replaced by that of CS and CO. On the contrary, no decarburization occurs with chlorine.Ionization potentials of the different species are measured and the deduced bond dissociation energies are discussed.
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