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- W1557100962 abstract "New and previously published adsorption data for hydrogen and carbon monoxide on various fresh and presulfided nickel/alumina catalysts showed that at 298/sup 0/K, the fractional hydrogen uptake decreased linearly with sulfur coverage; that irreversible adsorption of carbon monoxide was higher on sulfided than on fresh catalysts at 190/sup 0/, 273/sup 0/, and 300/sup 0/K, probably as a result of nickel tetracarbonyl formation; and that substantial amounts of nickel tetracarbonyl were formed in the gas phase in the presence of sulfided catalysts, which caused significant loss of nickel. The formation of the nickel tetracarbonyl probably proceeded via stable subcarbonyl species. At carbon monoxide pressures of < 1 mm Hg, no carbon monoxide absorbed at room temperature, but at methanation temperature (473/sup 0/-673/sup 0/K), dissociative adsorption did take place. Chemisorption of carbon monoxide therefore, cannot be used to measure nickel dispersion on used catalysts." @default.
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- W1557100962 date "1980-01-01" @default.
- W1557100962 modified "2023-09-27" @default.
- W1557100962 title "Sulfur poisoning of H/sub 2/ and CO adsorption on supported nickel" @default.
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