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Thewater gasshiftreaction (WGSR)isanimpor tantstepinmanyindustrialprocesses,includingammoni aandhydrogenproduction .Itisusuallyassistedbysev eralcatalysts ,oneofwhichisiron basedshiftcatalystwithatypicalcompositionof 74 .2 %Fe2 O3,10 .0 %Cr2 O3,0 .2 %MgO ,0 .5 %K2 Oandbalancevolatiles[1] .Obviously ,chromiaasthemainadditivecanbefoundinalmostallofiron basedhightemperaturewater gasshiftcatalysts.ThehexavalentchromiuminCrO3,thepre cursorofchromiainFe Crseriescatalysts ,isakindofveryharmfuls… 相似文献
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