A feasibility study of niobium-containing materials for oxygen storage in three way catalytic converters
作者： A. Simson , K. Roark , R. Farrauto
DOI: 10.1016/J.APCATB.2014.04.006
关键词:
摘要: Abstract Materials containing Ce–Zr–Y and doped with between 0 15% niobium were analyzed for their oxygen storage capacity as potential materials use in the three-way catalyst (TWC). An optimum amount of was identified (7.5 cat mol%) that led to significantly higher than baseline niobium-free sample (Zr0.70Ce0.22Y0.08Ox) at temperatures within typical operating range TWC. The niobium-containing material also had rates extents reduction oxidation during redox cycling tests performed 500 °C. In addition a dopant, formulations either Nd or Pr order performance found be: Nb > Nd > Pr. Characterization all indicated integrated into oxide phase. future, will be compared state-of-the-art OSC environments more
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