Enhancement of nitric oxide decomposition efficiency achieved with lanthanum-based perovskite-type catalyst
| Autor: | Sheng Jen Yu, Shaw Yi Yan, Kuan Lun Pan, Moo Been Chang, Mei Chung Chen |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Chemistry
Doping Inorganic chemistry Analytical chemistry chemistry.chemical_element 02 engineering and technology Management Monitoring Policy and Law 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Decomposition 0104 chemical sciences Nitric oxide Catalysis chemistry.chemical_compound Lanthanum 0210 nano-technology Waste Management and Disposal Titanium Perovskite (structure) Space velocity |
| Zdroj: | Journal of the Air & Waste Management Association. 66:619-630 |
| ISSN: | 2162-2906 1096-2247 |
| DOI: | 10.1080/10962247.2016.1158133 |
| Popis: | Direct decompositions of nitric oxide (NO) by La0.7Ce0.3SrNiO4, La0.4Ba0.4Ce0.2SrNiO4, and Pr0.4Ba0.4Ce0.2SrNiO4 are experimentally investigated, and the catalysts are tested with different operating parameters to evaluate their activities. Experimental results indicate that the physical and chemical properties of La0.7Ce0.3SrNiO4 are significantly improved by doping with Ba and partial substitution with Pr. NO decomposition efficiencies achieved with La0.4Ba0.4Ce0.2SrNiO4 and Pr0.4Ba0.4Ce0.2SrNiO4 are 32% and 68%, respectively, at 400 °C with He as carrier gas. As the temperature is increased to 600 °C, NO decomposition efficiencies achieved with La0.4Ba0.4Ce0.2SrNiO4 and Pr0.4Ba0.4Ce0.2SrNiO4, respectively, reach 100% with the inlet NO concentration of 1000 ppm while the space velocity is fixed at 8000 hr−1. Effects of O2, H2O(g), and CO2 contents and space velocity on NO decomposition are also explored. The results indicate that NO decomposition efficiencies achieved with La0.4Ba0.4Ce0.2SrNiO4 ... |
| Databáze: | OpenAIRE |
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