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Cu/Ba/bauxite possesses superior NOx storage and reduction (NSR) performances, high thermal stability, strong resistance against SO₂ poisoning and outstanding regeneration ability in comparison with Pt/Ba/Al₂O₃. It can serve as a cheap and promising alternative for traditional Pt/Ba/Al₂O₃ in NOx removal from lean-burn engines.
A new versatile method was developed for the synthesis of various transition metal oxides with uniform 1D structures via electrospinning combined with heat treatment. The 1D nanowire or hollow tubular structure can be tuned by controlling heating rates. Interestingly, NOx conversion is ca. 99% at 200 °C in hollow tubular CuCo2O4.
An electrospinning with calcination process was employed for the synthesis of La1-xCexCoOδ (x=0, 0.2, 0.4, 0.6, 0.8, and 1.0) oxides. These catalysts were investigated in terms of total benzene oxidation, and characterized by means of XRD, BET, H2-TPR, SEM, XPS, and TEM techniques. The results show that the amount of Ce doping obviously affects the… (More)