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The effect of arsenic poisoning of nickel catalysts for ethene adsorption was studied by the magnetic method and by infrared spectroscopy. Ethene adsorbed dissociatively on clean nickel. Arsine preadsorbed on the surface of nickel inhibited ethene dissociation and so reduced the ethene bond number at low coverage from 8 for clean nickel to 1.3 for nickel preadsorbed with arsine to the amount of 0...
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