甲苯在HCeY沸石上的脉冲反应动力学

在2.1-3.1kg压力下,探索了在HCeY沸石催化剂上取得脉冲反应动力学数据的条件。实验结果表明,在521-568℃温度区间、30-60ml/min流速范围内,甲苯在HCeY沸石上的催化反应以脱烷基为主,近似符合一级反应动力学特征。求得表观活化能为71.5kJ/mol;吸附热34.9KJ/mol;表面反应活化能为106.4kJ/mol。

Pulse Catalytic Reaction Kinetics of Toluens on HCeY Zeolite

An HCeYzeolite with SiO₂/Al₂O₃=4.9,exchange degree=78%,and specific surface area=850m²/g was prepared and was used as a catalyst for the demethylation and the disproportionation of toluene.The data of pulse catalytic reaction of toluene on the HCeYzeolite were measured in various temperatures and earring gas flow rates.Experimental results showed that,in the conditions of temperature range of 521-568℃,earring gas flow rate region of 30-60 ml/min,and pressure range of 2.1-3.1 kg/cm² the main conversion process of toluene on the HCeY Zeolite was demethylation reaction appeared as a first order kinetic characteritic.The apparent activation energy,the adsorption heat and the activation energy of surface reaction were 71.5kJ/mol,34.9kJ/mol and 106.4kJ/mol,respectively.