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 3MPa～0 6MPa。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:rcal=kK1CH2O2CC3H61+K1CH2O2+K2CC3H6+K3CPO 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。
The intrinsic kinetics of propylene epoxidation with H_2O_2 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:r_(cal)=kK_1C_(H_2O_2)C_(C_3H_6)1+K_1C_(H_2O_2)+K_2C_(C_3H_6)+K_3C_(PO)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 H_2O_2 adsorbed on Ti active sites and propylene in free state.
出处
《燃料化学学报》
EI
CAS
CSCD
北大核心
2003年第6期639-643,共5页
Journal of Fuel Chemistry and Technology
基金
国家自然科学基金 (2 9792 0 70 )
国家重点基础研究发展规划 (973 )(G2 0 0 0 480 0 5)~~
