...
  • 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 >Reaction of Peroxyl Radicals with Ozone in Water
【24h】

Reaction of Peroxyl Radicals with Ozone in Water

机译：过氧自由基与臭氧在水中的反应

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 reactivity of alkylpheroxyl radicals and -O_3SOO~· toward ozone was investigated. The peroxyl radicals were produced by steady-state γ-radiolysis in the presence of O_3. The rate constants were extracted from the decay rate of ozone measured during the irradiation. The rate constants vary between 7 * 10~3 and 2 * 10~5 M~(-1) s~(-1) and there is a trend of increasing rate constant with electron-withdrawing substituent. Quantum chemical computations support a mechanism, according to which formation of an alkyl trioxide radical is the rate-determining step. This is followed by rapid expulsion of O_2 to yield the alkoxyl radical. Conceivably, the alkyl trioxide radical is preceded by an extremely unstable alkyl pentoxide radical in equilibrium with the reactants.
机译：研究了烷基外围氧基和-O_3SOO〜·对臭氧的反应性。过氧自由基是在O_3存在下通过稳态γ辐射分解产生的。从照射过程中测得的臭氧衰减率中提取出速率常数。速率常数在7 * 10〜3和2 * 10〜5 M〜（-1）s〜（-1）之间变化，并且有吸电子取代基速率常数增加的趋势。量子化学计算支持一种机制，根据该机制，烷基三氧化物自由基的形成是决定速率的步骤。随后快速排出O_2以产生烷氧基基团。可以想象，在三氧化烷基自由基之前是与反应物平衡的极不稳定的五氧化烷基自由基。

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