柴油机碳烟颗粒在NO气氛下的催化氧化研究

围绕柴油机碳烟颗粒在NO气氛下的催化氧化问题进行相关的实验研究。通过稀土氧化物氧化铈和氧化镧分别负载硝酸盐制备了实验用催化剂,并在催化剂和碳烟颗粒"松接触"情况下,研究了在NO背景下对碳烟颗粒催化氧化过程,实现了在NO背景下对碳烟颗粒催化氧化;实验结果还显示,采用复合性稀土氧化物更能促进碳烟颗粒催化氧化,更有利于同时解决柴油车排放过程中产生的PM和NOx,从而为了开发高性能柴油机用催化剂提供了重要的实验基础。

Research on Catalytic Oxidation of Diesel Soot under NO Environment

Catalytic oxidation of diesel soot particles under NO environment was experimentally researched in the paper.The catalysts were prepared by rare earth oxides like cenia and lanthana respectively loaded with potassium nitrate,the catalytic oxidation processes of soot under NO environment was researched in the case that the soot particles and the prepared catalysts were "loose contact",and the catalytic oxidation of soot particles was realized in the end.It is also found in the test that compounded rare earth oxides is helpful to the catalytic oxidation of soot particles and is also beneficial to cope with the emitted particle matter and nitrogen oxides of diesel engine.Accordingly,the compounded rare earth oxides are very important for developing high performance diesel catalysts for future.