title: Decomposition kinetics of ammonia in gaseous stream by a nanoscale copper-cerium bimetallic catalyst.
abstract: 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.
authors.affiliation: Department of Industry Engineering and Management, Yung-Ta Institute of Technology and Commerce, 316 Chung-shan Road, Linlo, Pingtung 909, Taiwan. hungcm1031@gmail.com
authors.forename: Chang-Mao
authors.initials: CM
authors.lastname: Hung
mesh_terms: D000641:Ammonia / Q000493:pharmacokinetics*; D002384:Catalysis; D002563:Cerium / Q000737:chemistry*; D003300:Copper / Q000737:chemistry*; D008956:Models, Chemical; D010084:Oxidation-Reduction; D045483:Rivers; D014874:Water Pollutants, Chemical / Q000493:pharmacokinetics*; D014876:Water Pollution
chemical_list: D014874:Water Pollutants, Chemical; C032786:cerium nitrate; D002563:Cerium; D000641:Ammonia; D003300:Copper