Preparation and characterization of NdSrCu1-xCoxO4 and SM1.8Ce0.2Cu1-xCoxO4 catalysts for NOx decomposition.

Chan Yan Chi Rosa.Thesis (M.Phil.)--Chinese University of Hong Kong, 2003.Includes bibliographical references (leaves 70-71).Abstracts in English and Chinese.Abstract --- p.i論文摘要 --- p.iiAcknowledgements --- p.iiiTable of Contents --- p.ivList of Tables --- p.viiList of Figures --- p.viiiChapter Chapter 1. --- IntroductionChapter 1.1 --- Nitrogen oxides --- p.1Chapter 1.1.1 --- NOx and their chemical and physical properties --- p.1Chapter 1.1.2 --- Sources and formation of NOx --- p.3Chapter 1.1.3 --- Evaluation of the impact of NOx on human health and environment --- p.4Chapter 1.2 --- Decomposition of NOx --- p.5Chapter 1.3 --- Perovskite-type oxides --- p.8Chapter 1.3.1 --- Structure and composition of perovsite-type oxides --- p.8Chapter 1.3.2 --- Preparation of perovskite-type oxides --- p.12Chapter 1.3.3 --- Literature review of perovskites for NOx decomposition --- p.14Chapter 1.4 --- Objective of the project --- p.16References --- p.17Chapter Chapter 2. --- ExperimentalChapter 2.1 --- Catalyst preparation --- p.20Chapter 2.2 --- Catalytic activity evaluation --- p.20Chapter 2.3 --- Catalyst characterization --- p.22Chapter 2.3.1 --- Powder X-ray diffraction (XRD) --- p.22Chapter 2.3.1.1 --- Theory --- p.22Chapter 2.3.1.2 --- Instrumentation --- p.23Chapter 2.3.2 --- "Brunauer, Emmett and Teller (BET)" --- p.26Chapter 2.3.2.1 --- Theory --- p.26Chapter 2.3.2.2 --- Experimental --- p.28Chapter 2.3.3 --- X-ray photoelectron spectroscopy (XPS) --- p.28Chapter 2.3.3.1 --- Theory --- p.29Chapter 2.3.3.2 --- Qualitative and quantitative analysis --- p.29Chapter 2.3.3.3 --- Instrumentation --- p.31Chapter 2.3.4 --- Thermogravimetric analysis (TGA) --- p.34Chapter 2.3.5 --- NO-temperature programmed desorption (NO-TPD) --- p.34Chapter 2.3.6 --- Titration method --- p.35References --- p.36Chapter Chapter 3. --- Preparation and Characterization of NdSrCu1-xCox04 and Sm1.8Ceo.2Cu1-xCox04 catalysts for NOx DecompositionChapter 3.1 --- Introduction --- p.38Chapter 3.2 --- Experimental --- p.39Chapter 3.3 --- Results --- p.40Chapter 3.3.1 --- "BET, XRD and chemical analysis studies" --- p.40Chapter 3.3.2 --- Catalytic activity --- p.43Chapter 3.3.3 --- XPS studies --- p.48Chapter 3.3.4 --- TGA and NO-TPD --- p.57Chapter 3.4 --- Discussion --- p.63Chapter 3.4.1 --- Catalytic performance --- p.63Chapter 3.4.2 --- Structural defects --- p.65Chapter 3.4.3 --- Oxidation states --- p.67Chapter 3.4.4 --- Copper ion redox ability --- p.68References --- p.70Chapter Chapter 4. --- Conclusion and Future DirectionsChapter 4.1 --- Conclusion --- p.72Chapter 4.2 --- Future directions --- p.73Chapter 4.2.1 --- Characterization of catalysts --- p.73Chapter 4.2.2 --- Reaction mechanism --- p.73Chapter 4.2.3 --- Variation of element in B-site --- p.7