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- W2033957352 abstract "Different species formed in the interaction of CS2 with Ru/γ-alumina catalyst in the temperature range 425–625 K were examined using a pulse injection method and a flow microcatalytic reactor. In the presence of H2 carrier flow, CS2 reacts over the catalyst to form primarily CH4 and small amounts of higher hydrocarbons. Prolonged treatment with CS2 produced new products CO and H2S from CS2 and reduced drastically the catalytic methanation of CO. Under the inert atmosphere of He, CS2 interaction over catalyst generated CO2 in the initial stage and subsequent H2 injections gave rise to CH4. Further CS2H2 injections gave progressively reduced yields of CH4. At the stage when no methane was formed on H2 injections following a CS2 pulse, further injections of CS2 pulses produced new products, CO, SO2, COS, and H2S and subsequent H2 injections again resulted in H2S formation. The effect of a time gap between CS2 and H2 injections on the yields of CH4 and H2S has been studied. XPS studies indicated that CS2 decomposes on the catalyst surface to give elemental carbon and sulphur. It is suggested that S atoms progressively block those Ru sites where carbon or carbon oxides are methanated. It has also been found that the nascent sulphur formed on decomposition of CS2 loses its chemical reactivity with increasing temperature and time." @default.
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- W2033957352 date "1981-05-01" @default.
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- W2033957352 title "Sulphur poisoning of ruthenium/alumina methanation catalyst and hydrogenation of CS2" @default.
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