| C2H3＋NO2反应速率常数的研究 |
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| 引用本文： | 黄存顺,朱志强,冉琴,陈从香,陈旸. C2H3＋NO2反应速率常数的研究[J]. 物理化学学报, 2003, 19(1): 51-54. DOI: 10.3866/PKU.WHXB20030112 |
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| 作者姓名： | 黄存顺 朱志强 冉琴 陈从香 陈旸 |
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| 作者单位： | Key Laboratory of Bond Selective Chemistry, Chinese Academy of Sciences, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026 |
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| 基金项目： | 国家自然科学基金，国家重点基础研究专项基金(G1999075304)，中国科学院基金资助项目.~ |
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| 摘 要： | 利用激光光解C2H3Br产生C2H3自由基,在气相298 K, 总压2.66×103 Pa的条件下,研究C2H3与NO2的反应,用激光光解-激光诱导荧光（LP-LIF）检测中间产物OH自由基的相对浓度随着反应时间的变化关系,报导了双分子反应C2H3＋NO2的速率常数k(C2H3＋NO2)=(1.8±0.05)×10－11cm3•molec.－1•s－1,同时也得到OH＋NO2反应的速率常数k(OH＋NO2)=(2.1±0.15)×10－12 cm3•molec.－1•s－1.
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| 关 键 词： | C2H3 自由基 激光诱导荧光 反应速率常数 |
| 收稿时间： | 2002-04-15 |
| 修稿时间： | 2002-04-15 |
Study on the Rate Constant of the Reaction of C2H3 Radical with Nitric Dioxide |
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| Huang Cun Shun Zhu Zhi Qiang Ran Qin Chen Cong Xiang Chen Yang. Study on the Rate Constant of the Reaction of C2H3 Radical with Nitric Dioxide[J]. Acta Physico-Chimica Sinica, 2003, 19(1): 51-54. DOI: 10.3866/PKU.WHXB20030112 |
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| Authors: | Huang Cun Shun Zhu Zhi Qiang Ran Qin Chen Cong Xiang Chen Yang |
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| Affiliation: | Key Laboratory of Bond Selective Chemistry, Chinese Academy of Sciences, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026 |
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| Abstract: | The product formation of the reaction of C2H3 radical with NO2 was studied in the gas phase under 2.66×103 Pa total pressure and 298 K. C2H3 radical was generated by laser photolysis of C2H3Br/Ar mixture. In the presence of nitric dioxide (NO2), the formation of OH radicals of the electronic ground states was monitored by laser-induced fluorescence. From the results of time resolved measurements of the OH radical concentrations, bimolecular rate constants for the reactions C2H3＋NO2 and OH(X 2Π)＋NO2 were determined as k(C2H3＋NO2)=(1.8±0.05)×10－11 cm3•molec.－1•s－1 and k(OH＋NO2)=(2.1±0.15)×10－12 cm3•molec.－1•s－1. |
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| Keywords: | C_2H_3 radical Laser induced fluorescence Rate constant of reaction |
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