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(01): 51-54.
doi:
10.3866/PKU.WHXB20030112
Citation: 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(01): 51-54. doi: 10.3866/PKU.WHXB20030112
Citation: 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(01): 51-54. doi: 10.3866/PKU.WHXB20030112
C2H3＋NO2反应速率常数的研究
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.
English
Study on the Rate Constant of the Reaction of C2H3 Radical with Nitric Dioxide
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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