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摘要: 研究了叔丁醇溶剂中TS-1催化丙烯环氧化反应的本征动力学，反应条件为:温度303.15K～323.15K，丙稀压力0.3 MPa～0.6 MPa。根据反应机理及组分在TS-1上的吸附特点建立了如下的机理模型方程式：根据实验数据，我们对机理模型进行了参数估值。检验结果表明拟合效果较好，反应符合Eley-Rideal机理，丙烯环氧化反应发生在吸附态的过氧化氢与游离态的丙烯之间。Abstract: The intrinsic kinetics of propylene epoxidation with H2O2 over TS-1 in t-butyl alcohol/water system was investigated. The reaction was carried out at T=303.15 K～323.15 K, p=0.3 MPa～0.6 Mpa. Based on the proposed reaction mechanism and adsorption characteristics, the kinetic model was established as follows:based on the experimental data, the model parameters were estimated. The results showed that the Eley-Rideal model could fit precisely with the experimental data, and the reaction takes place between H2O2 adsorbed on Ti active sites and propylene in free state.
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Key words:
- titanium silicalite (TS-1) /
- PO (propylene oxide) /
- t-butyl alcohol /
- intrinsic kinetics
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