中文摘要：

用包头稀土矿中相对过剩的不经过分离镧、铈、镨轻稀土与锆的混合物为研究对象，制备（LaCePr）06Zr0.4O2稀土催化剂的前驱体。前驱体焙烧后会放出气体，所以用代和rrm（热重法和微商热重法）研究了其热分解过程，分析了热分解反应的动力学行为，采用微分法计算了其热分解过程所符合的动力学模型，用多种积分方法和非等温线性拟合法对计算结果进行了验证。结果表明，（LaCePr）0．6Zr0.4O2前驱体的热分解反应温度较低，在200℃～300℃之间，热分解过程符合三维扩散，球形对称Jander方程模型。

英文摘要：

This rare earth catalyst involved mixture of La,Ce,Pr and Zr for the research object. The preparation of （LaCePr）0.6 Zr0.4O2 has the property of thermal decomposition, and emits CO2. TG and DTG are used to study the thermal decomposition process of （LaCePr）0.6Zr0.4O2. The temperature of thermal decomposition was determined and the kinetic behavior was studied. The differen- tial method was used to calculate the kinetic parameters and determine the kinetic model of thermal decomposition of （LaCePr）0.6Zr0.4 02. The validations of the results were carried out by integral methods and imegral non - linear method. The results show that the temperature of thermal decomposition was low, ranging from 200℃ - 300℃. The mechanism function agrees to D3 model.