| Title: | Catalytic removal of phenol from gas streams by perovskite-type catalysts |
| Author(s): | Chen DL; Pan KL; Chang MB; |
| Address: | "Graduate Institute of Environmental Engineering, 'National' Central University, Taoyuan City 32001, Chinese Taipei. Graduate Institute of Environmental Engineering, 'National' Central University, Taoyuan City 32001, Chinese Taipei. Electronic address: mbchang@ncuen.ncu.edu.tw" |
| DOI: | 10.1016/j.jes.2016.04.031 |
| ISSN/ISBN: | 1001-0742 (Print) 1001-0742 (Linking) |
| Abstract: | "Three perovskite-type catalysts prepared by citric acid method are applied to remove phenol from gas streams with the total flow rate of 300mL/min, corresponding to a GHSV of 10,000/hr. LaMnO(3) catalyst is first prepared and further partially substituted with Sr and Cu to prepare La(0.8)Sr(0.2)MnO(3) and La(0.8)Sr(0.2)Mn(0.8)Cu(0.2)O(3), and catalytic activities and fundamental characteristics of these three catalysts are compared. The results show that phenol removal efficiency achieved with La(0.8)Sr(0.2)Mn(0.8)Cu(0.2)O(3) reaches 100% with the operating temperature of 200 degrees C and the rate of mineralization at 300 degrees C is up to 100%, while the phenol removal efficiencies achieved with La(0.8)Sr(0.2)MnO(3) and LaMnO(3) are up to 100% with the operating temperature of 300 degrees C and 400 degrees C, respectively. X-ray photoelectron spectroscopy (XPS) analysis shows that the addition of Sr and Cu increases the lattice oxygen of La(0.8)Sr(0.2)Mn(0.8)Cu(0.2)O(3), and further increases mobility or availability of lattice oxygen. The results indicate that La(0.8)Sr(0.2)Mn(0.8)Cu(0.2)O(3) has the best activity for phenol removal among three catalysts prepared and the catalytic activity of phenol oxidation is enhanced by the introduction of Sr and Cu into LaMnO(3). Apparent activation energy of 48kJ/mol is calculated by Mars-Van Krevelen Model for phenol oxidation with La(0.8)Sr(0.2)Mn(0.8)Cu(0.2)O(3) as catalyst" |
| Keywords: | "Air Pollutants/*chemistry Calcium Compounds Catalysis *Models, Chemical Oxidation-Reduction Oxides Phenol/*chemistry Titanium Activation energy Mineralization rate Perovskite-type catalyst Phenol Volatile organic compounds (VOCs);" |
| Notes: | "MedlineChen, Dai Ling Pan, Kuan Lun Chang, Moo Been eng Netherlands 2017/06/03 J Environ Sci (China). 2017 Jun; 56:131-139. doi: 10.1016/j.jes.2016.04.031. Epub 2016 Oct 25" |
