碳烟微粒催化氧化过程动力学分析

Kinetic Analysis on the Catalytic OxidationProcess of Diesel Particulates

本文主要开展了对柴油机联内微粒催化氧化过程的动力学分析研究。采用热重分析技术，获得了在四种不同代化剂分别作用下，描述碳烟微粒氧化全过程的热重实验曲线，确定出其显著的着火特性。运用动力学方程对热重曲线进行了数学处理，计算出对应的动力学参数。通过对比反应活化能（Ｅａ）和着火点温度（Ｔｉ），实现了对催化剂活性的有效评价与筛选。

The kinetic analysis on the catalytic oxidation process of diesel particulates is presented ill this paper. By use of thermogravimetric analysis (TGA) technique, the TGA curves describing the wholecatalytic oxidation of particulates under four different catalysts are obtained. Then, some kineticequations are derived and introduced to process these TGA curves. Through comparing theactivation energy (Ea) and the igniting temperature (Ti) of each reaction, an effective way of theevaluation and selection for the catalysts is achieved.