The kinetics of'/> An Experimental Study of the Kinetics of OH/OD(v = 1,2,3) + SO<sub>2</sub>: The Limiting High-Pressure Rate Coefficients as a Function of Temperature
  • 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 >An Experimental Study of the Kinetics of OH/OD(v = 1,2,3) + SO2: The Limiting High-Pressure Rate Coefficients as a Function of Temperature
【24h】

An Experimental Study of the Kinetics of OH/OD(v = 1,2,3) + SO2: The Limiting High-Pressure Rate Coefficients as a Function of Temperature

机译：OH / OD的动力学（ v = 1,2,3）+ SO 2 ：限制高压速率系数作为温度的函数的实验研究

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 kinetics of the reaction OH/OD(v = 1,2,3) + SO2 were studied using a photolysis/laser-induced fluorescence technique. The rate coefficients OH/OD(v = 1,2,3) + SO2, k1, over the temperature range of 295–810 K were used to determine the limiting high-pressure limit k1∞. This method is usually applicable if the reaction samples the potential well of the adduct HOSO2 and if intramolecular vibrational relaxation is fast. In the present case, however, the rate coefficients showed an additional fast removal contribution as evidenced by the increase in k1 with vibrational level; this behavior together with its temperature dependence is consistent with the existence of a weakly bound complex on the potential energy surface prior to adduct formation. The data were analyzed using a composite mechanism that incoporates energy-transfer mechanisms via both the adduct and the complex, and yielded a value of k1∞(295 K) equal to (7.2 ± 3.3) × 10–13 cm3 molecule–1 s–1 (errors at 1σ), a factor of between 2 and 3 smaller than the current recommended IUPAC and JPL values of (2.0–1.0+2.0) and (1.6 ± 0.4) × 10–12 cm3 molecule–1 s–1 at 298 K, respectively, although the error bars do overlap. k1∞ was observed to only depend weakly on temperature. Further evidence for a smaller k1∞ is presented in the companion paper.]]>
机译：<！[cdata [ src ='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/jpcafh/2017/jpcafh.2017.121.issue-17/acs.jpca.7b01294/ 20170428 /图像/中/ jp-2017-01294k_0006.gif“>反应的动力学OH / OD（ v = 1,2,3）+ SO 2 是使用光解/激光诱导的荧光技术研究。速率系数OH / OD（ v = 1,2,3）+ SO 2 ， k 1 ，在295-810k的温度范围内用于确定限制的高压极限 k 1 ∞。该方法通常适用，如果反应对加合Hoso 2 的潜在井，并且如果分子内振动松弛快。然而，在当前情况下，速率系数显示出额外的快速去除贡献，如振动水平的 k 1 的增加所证明的贡献;这种行为与其温度依赖性一起与在加合形成之前在潜在能量表面上的弱束缚复合物的存在一致。使用复合机构分析数据，该复合机构通过加合物和复合物传递能量传递机制，并产生 k 1 ∞（295 k）等于（7.2±3.3）×10 -13厘米 3 分子 -1 s -1 （在1σ处的错误），比当前推荐的Iupac和JPL值的误差为2和3（2.0 - 1.0 + 2.0 ）和（1.6±0.4）×10 -12 cm 3 分子 -1 s -1 分别为298 k，虽然误差栏确实重叠。观察到 k 1 仅在温度下缺点。伴随着伴随纸张中呈现较小的 k 1 ∞的进一步证据。]]>

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