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LnZrO_2(Ln=Ce,Pr,Tb)储氧材料起燃性能的研究 被引量:1

Light-off properties of oxygen storage materials LnZrO_2(Ln=Ce,Pr,Tb)
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摘要 采用超声膜扩散法制备LnxZr1-xO2(Ln=Ce,Pr,Tb)储氧材料,通过Light-off实验对其起燃性能进行了研究,表明储氧材料LnxZr1-xO2(Ln=Pr,Tb)(x=0.6,0.8)具有比目前国际通用的CexZr1-xO2(x=0.4,0.6)储氧材料更为优越的对CO和HC起燃性能,并且在Pr,Tb含量较大的情况下(x≥0.6),能够更为有效地提高汽车尾气净化催化剂对CO和HC的起燃催化转化功能. The oxygen storage materials LnxZr1-xO2(Ln=Ce,Pr,Tb) were synthesized using ultrasound-assisted osmosis-diffusion chemical method.Light-off technique was employed to explore the ignition properties of LnxZr1-xO2.The results indicate that the light-off properties of LnxZr1-xO2(Ln=Pr,Tb)(x=0.6,0.8) for CO or HC are superior to those of CexZr1-xO2(x=0.4,0.6) and better at improving the automobile exhaust purification catalyst when the concentration of Pr or Tb is higher than 0.6 in(LnxZr1-xO2;Ln= Pr,Tb).
出处 《内蒙古科技大学学报》 CAS 2011年第4期289-293,共5页 Journal of Inner Mongolia University of Science and Technology
基金 国家自然科学基金资助项目(50642034 50564002)
关键词 LnxZr1-xO2 起燃 储氧材料 催化剂 LnxZr1-xO2 light-off oxygen storage materials catalyst.
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