Catalyst for NOx removal in nitric-acid plant gaseous effluents |
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| Institution: | 1. Department of PG Chemistry, Aditanar College of Arts and Science, Tiruchendur 628 216, Tamilnadu, India;2. Laboratory of Computational Chemistry and Nanostructures, Department of Material Sciences, Faculty of Mathematical, Informatics and Material Sciences, University of 08 Mai 1945, Guelma, Algeria;3. Electron Microscopy Service, Universidad Católica San Antonio de Murcia (UCAM), 30107 Guadalupe, Spain;4. Bioinformatics and High Performance Computing Research Group (BIO-HPC), Computer Science Department, Universidad Católica San Antonio de Murcia (UCAM), 30107 Guadalupe, Spain;1. CAPEC-PROCESS-Department of Chemical and Bio-chemical Engineering, Technical University of Denmark, Søltofts Plads, Building 229, DK-2800, Kgs. Lyngby Denmark.;2. FVT-Department of Chemical and Biochemical Engineering, Technical University of Dortmund (TUDortmund), D-44227 Emil-Figge-Str. 70 Dortmund |
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| Abstract: | The behaviour of a V2O5WO3TiO2 phosphorated catalyst, in the Selective Catalytic Reduction (SCR) of equimolar NO + NO2 mixtures, is studied in order to analyse the possibility of its industrial utilization for the treatment of nitric-acid plant stack gases. With this new catalyst, an NOx conversion higher than 90% molar can be achieved, the ammonia concentration at the exit gas being lower than that required to form ammonium salts, throughout the temperature range of commercial interest: 250–450°C, at a relatively high space velocity (GHSV ? 40000 h?1 NC). The effect of several operating variables such as oxygen concentration and NO2/NO molar ratio in the feed is also discussed. |
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