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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Reactions of Fe~+ and FeO~+ with C_2H _2, C_2H_4, and C_2H_6: Temperature-dependent kinetics
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Reactions of Fe~+ and FeO~+ with C_2H _2, C_2H_4, and C_2H_6: Temperature-dependent kinetics

机译：Fe〜+和FeO〜+与C_2H _2，C_2H_4和C_2H_6的反应：温度依赖性动力学

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摘要

We present the first temperature-dependent rate constants and branching ratios for the reactions of Fe~+ and FeO~+ with C _2H_2, C_2H_4, and C_2H _6 from 170 to 700 K. Fe~+ is observed to react only by association with the three hydrocarbons, with temperature dependencies of T ~(-2) to T~(-3). FeO~+ reacts with C_2H _2 and C_2H_4 at the collision rate over the temperature range, and their respective product branchings show similar temperature dependences. In contrast, the reaction with ethane is collisional at 170 K but varies as T~(-0.5), while the product branching remains essentially flat with temperature. These variations in reactivity are discussed in terms of the published reactive potential surfaces. The effectiveness of Fe~+ as an oxygen-transfer catalyst toward the three hydrocarbons is also discussed.
机译：我们给出了Fe〜+和FeO〜+与C _2H_2，C_2H_4和C_2H _6在170至700 K之间反应的第一温度依赖性速率常数和支化比。 3种碳氢化合物，温度依赖性为T〜（-2）至T〜（-3）。在整个温度范围内，FeO〜+以碰撞速率与C_2H _2和C_2H_4反应，并且它们各自的产物支链显示出相似的温度依赖性。相反，与乙烷的反应在170 K时发生碰撞，但随T〜（-0.5）的变化而变化，而产物支链随温度基本保持平坦。反应性的这些变化是根据已公布的反应性电位表面进行讨论的。还讨论了Fe〜+作为向三种烃类转移氧的催化剂的有效性。

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