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Cu.Rh.ZSM5和Cu.Ir.zsM5/堇青石整体式分子筛对稀燃汽油机NOx排放的催化特性。实验结果证明,Cu—ZSM5单金属分子筛催化器活性较低,但催化温度特性好,适于作为多金属离子交换的分子筛载体。首次发现钯、铑/堇青石整体式分子筛催化剂组合试样在稀燃湿度范围内,NOx的转化效率总体呈现持续稳定趋势,转化率为45%左右。NOx转化温...

IR measurement of adsorbed pyridine. The Brønsted acid sitesgenerated on WO3/Al2O3support were required to give the dispersed Pd species, similar to on the zeolite.©... since NOxis harmful and causes acid rain.Methane is the most preferable reductant among var-ious hydrocarbons in the reduction of NO, because itis the main component of...

the HC2SCR of NOxis usually suppressed in the presence of water vapor ,which inevitably exists in various exhausts , resulting in a difficulty for utilization of the catalysts. Thus... FT2IR equipped with an insitu diffuse reflection chamber and a high sensitivity MCT detector. Because water vapor in gas phase and ad2sorbed water on Ag/ Al2O3surface ...