| Title: | Effects of precursor and sulfation on OMS-2 catalyst for oxidation of ethanol and acetaldehyde at low temperatures |
| Address: | "Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, China" |
| ISSN/ISBN: | 0013-936X (Print) 0013-936X (Linking) |
| Abstract: | "Volatile organic compounds (VOCs) emitted from many industrial processes and transportation activities are major organic pollutants in the atmosphere and toxic to human health. Octahedral molecular sieve (OMS-2) catalysts with different precursors and sulfate-acidified OMS-2 catalysts were synthesized using refluxing methods. The catalysts were investigated on complete oxidation of ethanol and acetaldehyde, and both demonstrated good reactivity. However, acidification resulted in a decrease in activity. OMS-2 catalyst using MnSO(4) as precursor exhibited the best catalytic performance and, thus, was selected for catalyst deactivation by sulfur dioxide. The results of this study suggested that the Mn-O bond of OMS-2 catalysts was the main determinant of the catalytic activity toward oxygenated VOC oxidation and weaker acid sites benefited higher acetaldehyde selectivity. Catalyst deactivation resulted from a strong but slow chemical interaction between the Mn-O bond and sulfur dioxide, probably forming manganese sulfate" |
| Keywords: | Acetaldehyde/*chemistry Catalysis *Cold Temperature Ethanol/*chemistry Oxidation-Reduction Sulfates/*chemistry Volatile Organic Compounds/chemistry; |
| Notes: | "MedlineWang, Renhu Li, Junhua eng Research Support, Non-U.S. Gov't 2010/05/08 Environ Sci Technol. 2010 Jun 1; 44(11):4282-7. doi: 10.1021/es100253c" |
