Abstract

The kinetics of epoxidation of allyl alcohol with hydrogen peroxide in the presence of a titanium-containing zeolite catalyst TS-1 has been studied. The hypothetical mechanisms of varying degrees of complexity were proposed with further discrimination. The results of the kinetic study allow us to conclude the following: inclusion of rate inhibition of the process by the resulting product (glycidol) is an essential condition for adequate description of the kinetic dependences of epoxidation. It was established that both the Eley–Rideal type mechanism and the Langmuir–Hinshelwood mechanism with activation of allyl alcohol and hydrogen peroxide at different catalyst sites make it possible to describe the kinetic regularities within the experimental error. Further discrimination requires additional studies.

中文翻译：

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过氧化氢在钛硅酸盐催化剂 TS-1 上烯丙醇环氧化的动力学和机理。假设机制之间的制定和判别

摘要

研究了在含钛沸石催化剂 TS-1 存在下烯丙醇与过氧化氢的环氧化动力学。提出了不同复杂程度的假设机制，并进一步区分。动力学研究的结果使我们能够得出以下结论：所得产物（缩水甘油）对过程的速率抑制是充分描述环氧化动力学依赖性的必要条件。已经确定，Eley-Rideal 型机制和 Langmuir-Hinshelwood 机制在不同的催化剂位点激活烯丙醇和过氧化氢都可以描述实验误差内的动力学规律。进一步的歧视需要额外的研究。