Chlorine Dioxide-Iodide-Methyl Acetoacetate Oscillation Reaction Investigated by UV-Vis and Online FTIR Spectrophotometric Method
In order to study the chemical oscillatory behavior and mechanism of a new chlorine dioxide-iodide ion-methyl acetoacetate reaction system, a series of experiments were done by using UV-Vis and online FTIR spectrophotometric method. The initial concentrations of methyl acetoacetate, chlorine dioxide...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1100/2012/918620 |
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| author | Laishun Shi Xiaomei Wang Na Li Jie Liu Chunying Yan |
| author_facet | Laishun Shi Xiaomei Wang Na Li Jie Liu Chunying Yan |
| author_sort | Laishun Shi |
| collection | DOAJ |
| description | In order to study the chemical oscillatory behavior and mechanism of a new chlorine dioxide-iodide ion-methyl acetoacetate reaction system, a series of experiments were done by using UV-Vis and online FTIR spectrophotometric method. The initial concentrations of methyl acetoacetate, chlorine dioxide, potassium iodide, and sulfuric acid and the pH value have great influence on the oscillation observed at wavelength of 289 nm. There is a preoscillatory or induction period, and the amplitude and the number of oscillations are associated with the initial concentration of reactants. The equations for the triiodide ion reaction rate changing with reaction time and the initial concentrations in the oscillation stage were obtained. Oscillation reaction can be accelerated by increasing temperature. The apparent activation energies in terms of the induction period and the oscillation period were 26.02 KJ/mol and 17.65 KJ/mol, respectively. The intermediates were detected by the online FTIR analysis. Based upon the experimental data in this work and in the literature, a plausible reaction mechanism was proposed for the oscillation reaction. |
| format | Article |
| id | doaj-art-3e89bbedc7ed469795097213d4943e81 |
| institution | Kabale University |
| issn | 1537-744X |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-3e89bbedc7ed469795097213d4943e812025-02-03T05:44:16ZengWileyThe Scientific World Journal1537-744X2012-01-01201210.1100/2012/918620918620Chlorine Dioxide-Iodide-Methyl Acetoacetate Oscillation Reaction Investigated by UV-Vis and Online FTIR Spectrophotometric MethodLaishun Shi0Xiaomei Wang1Na Li2Jie Liu3Chunying Yan4School of Chemistry and Chemical Engineering, Shandong University, South Campus, Jinan 250061, ChinaSchool of Chemistry and Chemical Engineering, Shandong University, South Campus, Jinan 250061, ChinaSchool of Chemistry and Chemical Engineering, Shandong University, South Campus, Jinan 250061, ChinaSchool of Chemistry and Chemical Engineering, Shandong University, South Campus, Jinan 250061, ChinaSchool of Chemistry and Chemical Engineering, Shandong University, South Campus, Jinan 250061, ChinaIn order to study the chemical oscillatory behavior and mechanism of a new chlorine dioxide-iodide ion-methyl acetoacetate reaction system, a series of experiments were done by using UV-Vis and online FTIR spectrophotometric method. The initial concentrations of methyl acetoacetate, chlorine dioxide, potassium iodide, and sulfuric acid and the pH value have great influence on the oscillation observed at wavelength of 289 nm. There is a preoscillatory or induction period, and the amplitude and the number of oscillations are associated with the initial concentration of reactants. The equations for the triiodide ion reaction rate changing with reaction time and the initial concentrations in the oscillation stage were obtained. Oscillation reaction can be accelerated by increasing temperature. The apparent activation energies in terms of the induction period and the oscillation period were 26.02 KJ/mol and 17.65 KJ/mol, respectively. The intermediates were detected by the online FTIR analysis. Based upon the experimental data in this work and in the literature, a plausible reaction mechanism was proposed for the oscillation reaction.http://dx.doi.org/10.1100/2012/918620 |
| spellingShingle | Laishun Shi Xiaomei Wang Na Li Jie Liu Chunying Yan Chlorine Dioxide-Iodide-Methyl Acetoacetate Oscillation Reaction Investigated by UV-Vis and Online FTIR Spectrophotometric Method The Scientific World Journal |
| title | Chlorine Dioxide-Iodide-Methyl Acetoacetate Oscillation Reaction Investigated by UV-Vis and Online FTIR Spectrophotometric Method |
| title_full | Chlorine Dioxide-Iodide-Methyl Acetoacetate Oscillation Reaction Investigated by UV-Vis and Online FTIR Spectrophotometric Method |
| title_fullStr | Chlorine Dioxide-Iodide-Methyl Acetoacetate Oscillation Reaction Investigated by UV-Vis and Online FTIR Spectrophotometric Method |
| title_full_unstemmed | Chlorine Dioxide-Iodide-Methyl Acetoacetate Oscillation Reaction Investigated by UV-Vis and Online FTIR Spectrophotometric Method |
| title_short | Chlorine Dioxide-Iodide-Methyl Acetoacetate Oscillation Reaction Investigated by UV-Vis and Online FTIR Spectrophotometric Method |
| title_sort | chlorine dioxide iodide methyl acetoacetate oscillation reaction investigated by uv vis and online ftir spectrophotometric method |
| url | http://dx.doi.org/10.1100/2012/918620 |
| work_keys_str_mv | AT laishunshi chlorinedioxideiodidemethylacetoacetateoscillationreactioninvestigatedbyuvvisandonlineftirspectrophotometricmethod AT xiaomeiwang chlorinedioxideiodidemethylacetoacetateoscillationreactioninvestigatedbyuvvisandonlineftirspectrophotometricmethod AT nali chlorinedioxideiodidemethylacetoacetateoscillationreactioninvestigatedbyuvvisandonlineftirspectrophotometricmethod AT jieliu chlorinedioxideiodidemethylacetoacetateoscillationreactioninvestigatedbyuvvisandonlineftirspectrophotometricmethod AT chunyingyan chlorinedioxideiodidemethylacetoacetateoscillationreactioninvestigatedbyuvvisandonlineftirspectrophotometricmethod |