Journal
CHEMICAL PHYSICS LETTERS
Volume 584, Issue -, Pages 195-199Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cplett.2013.08.074
Keywords
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Funding
- National Science Foundation of China [21103007, 21177008, 21075007]
- 863 Program [2012AA03A609]
- Fundamental Research Funds for the Central Universities [ZZ1231]
- 'Chemical Grid Project' of Beijing University of Chemical Technology
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The oscillations of N2O decomposition over Cu-ZSM-5 are investigated by considering the relationship of activation energy and coverage of copper. It is found that the bifurcation point is 146 kJ mol(-1), close to the theoretical calculation barrier and the experimental apparent activation barrier. Then adding a stochastic component to activation energy leads to a broader range of parameters that support oscillation, a form of fluctuation-driven oscillation (FDO). The signal-to-noise ratio of FDO reaches a maximum at the particular noise intensity. The presence of FDO makes the stochastic model show oscillations at a more extended region than the deterministic one. (c) 2013 Elsevier B.V. All rights reserved.
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