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以连续流动稳态法研究了甲醇在HZSM-5分子筛上生成二甲醚的反应动力学。使用活塞流反应器及连续搅拌槽式反应器,在150～190℃内分别得到相应的动力学数据。依据分子态吸附的甲醇在表面反应的可逆性及二甲醚吸附能力极弱的特性建立了反应机理模型,认为吸附态的与气相中的甲醇进行分子间反应生成二甲醚是速控步骤的Rideal-Eley机理。
The kinetics of dimethyl ether formation on methanol over HZSM-5 zeolite was studied by a continuous flow steady-state method. Using the plug flow reactor and the continuous stirred tank reactor, the corresponding kinetic data were obtained respectively at 150 ~ 190 ℃. According to the reversibility of methanol adsorption on the surface and the weak adsorption capacity of dimethyl ether, a reaction mechanism model was established. It is considered that the reaction of adsorbed methanol with methanol in the gas phase to produce dimethyl ether Rideal-Eley mechanism.