Kinetic study for the production mechanism of halo-dibenzo-p-dioxin
| Project/Area Number |
13650827
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
反応・分離工学
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| Research Institution | Nagaoka University of Technology |
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Principal Investigator |
FUJII Nobuyuki Nagaoka University of Technology, Department of Chemistry, Professor, 工学部, 教授 (50011119)
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| Co-Investigator(Kenkyū-buntansha) |
MURAKAMI Yoshinori Nagaoka University of Technology, Department of Chemistry, Research Associate, 工学部, 助手 (70293256)
KOBAYASHI Takaomi Nagaoka University of Technology, Department of Chemistry, Associate Professor, 工学部, 助教授 (90225516)
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| Project Period (FY) |
2001 – 2002
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| Project Status |
Completed (Fiscal Year 2002)
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| Budget Amount *help |
¥3,600,000 (Direct Cost: ¥3,600,000)
Fiscal Year 2002: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 2001: ¥2,700,000 (Direct Cost: ¥2,700,000)
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| Keywords | dibenzo-p-dioxin / production / shock-tube / phenoxy radical / gas chromatography / mechanism / high-temperature / combustion / ダイオキシン骨格 / 生成反応機構 / シクロペンタジエニルラジカル / 脱水素付加反応 / 衝撃波管実験 / 原子共鳴分光法 / メトキシベンゼン |
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| Research Abstract |
In order to confirm that the dibenzo-p-dioxin production channel in combustion is 2C_6H_5O→C_6H_4O_2C_6H_4+2H, high temperature reactions of phenoxy radicals (C_6H_5O) were investigated over the temperature range 1250 - 1700 K using shock-tube techniques. Methoxybenzene (C_6H_5OCH_3) and trifluromethoxybenzene (C_6H_5OCF_3) were used as sources of C_6H_5O radicals. By comparing the experimental results with those by computer simulations, high temperature reactions of C_6H_5O radicals including the dibenzo-p-dioxin production channel were discussed. Reaction products of C_6H_5O decomposition were also analyzed with gas chromatography by sampling the final products behind the reflected shock of C_6H_5OCH_3 and C_6H_5OCF_3 diluted with Ar mixtures. We found that not only the linear hydrocarbons but also aromatic compounds such as phenol were produced behind the shock. However the dibenzo-p-dioxin was not detected as the final products behind the shockwaves of C_6H_5OCH_3 and C_6H_5OCF_3 diluted with Ar mixtures. To simulate the temperature dependence of the yield of dibenzo-p-dioxin production, kinetic model for dibenzo-p-dioxin formation was proposed and compared with the experimental observations.
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Report
(3 results)
Research Products
(18 results)
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[Publications] Fujii, N., Saejung, T., Sugimoto, K., Watanabe, N., Kobayashi, T., Murakami, Y.: "Kinetic Study on High Temperature Decomposition of Phenoxy Radical"29th International Symposium on Combustion. 217 (2002)
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