• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Chemical Kinetics of the Azide Radical: Rate Constants for reactions with Cl, NO, NO_2, O_2, CO, CO_2, Cl_2, and C_3H_6
【24h】

Chemical Kinetics of the Azide Radical: Rate Constants for reactions with Cl, NO, NO_2, O_2, CO, CO_2, Cl_2, and C_3H_6

机译：叠氮基自由基的化学动力学：与Cl，NO，NO_2，O_2，CO，CO_2，Cl_2和C_3H_6反应的速率常数

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The reactions of the azide radical (X-tilde ~2Π_g), produced by the reaction of F atoms with HN_3, with F, Cl, NO, NO_2, O_2, CO, CO_2, Cl_2, and propylene have been examined in a room-temperature flow reactor. The relative concentration of N_3 was monitored under pseudo-first-order conditions using laser-induced fluorescence. A microwave discharge applied to a dilute flow of CF_4 in argon served as the F atom source for the F + HN_3 reaction. Using reactant concentrations of (0.5-4.0) * 10~(12) and (1.0-4.0) * 10~(12) molecules cm~(-3) for CF_4 and HN_3, respectively, the rate constant for the N_3 + F reaction was found to be (4.1 ± 0.3) * 10~(-11) cm~3 molecule~(-1) s~(-1), which compares favorably with the accepted value of (5 ± 2) * 10~(-11) cm~3 molecule~(-1). The reaction with Cl atoms was examined using reactant concentrations of (5.5-9.4) * 10~(11), (2.0-4.0) * 10~(12), and (1.0-22.0) * 10~(12) molecule cm~(-3) for CF_4, HN_3, and Cl_2, respectively, and the rate constant is (2.1_(-0.6)~(+1.0)) * 10~(-11) cm~3 molecule~(-1) s~(-1). The rate constants for the reactions of N_3 with NO, NO_2, and CO were determined to be (2.9 ± 0.3) * 10~(-12), (1.8 ± 0.2) * 10~(-12) cm~3 molecule~(-1) s~(-1), respectively. The reactions between azide radicals and Cl_2, CO_2, O_2, and propylene all occur with rate constants less than 5 * 10~(-13) cm~3 molecule~(-1) s~(-1), indicating that N_3 is not an especially reactive radical. The bimolecular self-destruction rate for azide radical was also examined. An upper bound on the rate constant was determined to be ≤1-2 * 10~(-12) cm~3 molecule~(-1) s~(-1). The possible products and the reaction mechanisms of these reactions are discussed.
机译：已在室内检查了F原子与HN_3与F，Cl，NO，NO_2，O_2，CO，CO_2，Cl_2和丙烯的反应产生的叠氮化物自由基（X-tilde〜2Π_g）的反应。温度流动反应器。使用激光诱导的荧光在伪一级条件下监测N_3的相对浓度。施加于氩气中CF_4稀流的微波放电是F + HN_3反应的F原子源。使用CF_4和HN_3的反应物浓度分别为（0.5-4.0）* 10〜（12）和（1.0-4.0）* 10〜（12）分子cm〜（-3），N_3 + F反应的速率常数被发现为（4.1±0.3）* 10〜（-11）cm〜3分子〜（-1）s〜（-1），与公认的（5±2）* 10〜（- 11）cm〜3分子〜（-1）。使用（5.5-9.4）* 10〜（11），（2.0-4.0）* 10〜（12）和（1.0-22.0）* 10〜（12）分子cm〜的反应物浓度检查与Cl原子的反应CF_4，HN_3和Cl_2分别为（-3），速率常数为（2.1 _（-0.6）〜（+1.0））* 10〜（-11）cm〜3分子〜（-1）s〜 （-1）。 N_3与NO，NO_2和CO反应的速率常数确定为（2.9±0.3）* 10〜（-12），（1.8±0.2）* 10〜（-12）cm〜3分子〜（ -1）s〜（-1）。叠氮化物自由基与Cl_2，CO_2，O_2和丙烯之间的反应均以小于5 * 10〜（-13）cm〜3分子〜（-1）s〜（-1）的速率常数发生，表明N_3不是特别是活性基团还检查了叠氮化物自由基的双分子自毁率。速率常数的上限确定为≤1-2* 10〜（-12）cm〜3分子〜（-1）s〜（-1）。讨论了这些反应的可能产物和反应机理。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号