同时消除柴油机尾气排放炭颗粒和NOx催化剂的研究进展

介绍了简单氧化物、复合氧化物(尖晶石和钙钛矿)催化剂都具有同时消除柴油机尾气中的炭颗粒和NO的活性．但是炭颗粒的起燃温度较高，生成N2的选择性差。在消除炭颗粒和氮氧化物时，有N2O生成，造成二次污染，炭颗粒与催化剂的接触形式直接影响炭颗粒的燃烧温度。

Research Advances of the Catalysts for Simultaneous Removal of NOx and Diesel Soot Particulates

The major pollutions of soot particles and nitrogen oxides emitted from diesel engines are expatiated simply. The latest research progress of the catalysts for simultaneous removal of NO x and diesel soot particulates emitted from diesel engines is reviewed. Simple oxide and complex oxide (spinel and perovskite) catalysts are used for the abatement of NO x and diesel soot particulates. However, the ignition temperature of carbon, which is affected by the contact between soot and catalyst, is relatively higher compared with the temperature for diesel exhaust and the catalytic selectivity produced N 2 is poor. In addition, N 2O produced in eliminating diesel exhaust pollutants will bring secondary pollution. It is the key to improve the contact between catalyst and soot, to reduce the ignition temperature of carbon and to improve the activity and the selectivity of catalysts.