Hung Chang-Mao
Department of Industry Engineering and Management, Yung-Ta Institute of Technology and Commerce, 316 Chung-shan Road, Linlo, Pingtung 909, Taiwan.
J Hazard Mater. 2008 Jan 15;150(1):53-61. doi: 10.1016/j.jhazmat.2007.04.044. Epub 2007 Apr 20.
This study performance is to examine the kinetics over nanoscale copper-cerium bimetallic catalyst under selective catalytic oxidation (SCO) of ammonia to N(2) in a tubular fixed-bed reactor (TFBR) at temperatures from 150 to 400 degrees C in the presence of oxygen. The nanoscale copper-cerium bimetallic catalyst was prepared by co-precipitation with Cu(NO(3))(2) and Ce(NO(3))(3) at molar ratio of 6:4. Experimental results showed that the catalyst with transmission electron microscopy (TEM) revealed that copper and cerium are well dispersed and catalyst in the form of nanometer-sized particles. Moreover, the kinetic behavior of NH(3) oxidation with catalysis can be accounted by using the rate expression of the Langmuir-Hinshelwood type kinetic model. Kinetic parameters are also developed on the basis of the differential reactor data. Also, experimental results are compared with those of the model predicted.
本研究旨在考察在管式固定床反应器（TFBR）中，于150至400摄氏度、有氧气存在的条件下，纳米级铜铈双金属催化剂上氨选择性催化氧化（SCO）生成N₂的动力学。纳米级铜铈双金属催化剂通过以6:4的摩尔比将Cu(NO₃)₂和Ce(NO₃)₃共沉淀制备而成。实验结果表明，通过透射电子显微镜（TEM）观察该催化剂发现，铜和铈分散良好，且催化剂呈纳米尺寸颗粒形式。此外，氨催化氧化的动力学行为可用朗缪尔 - 欣谢尔伍德型动力学模型的速率表达式来解释。动力学参数也是根据微分反应器数据得出的。同时，将实验结果与模型预测结果进行了比较。
