Isoconversional kinetic analysis of isothermal selective ethanol adsorption on zeolite type NaZSM-5
Isoconversional kinetic analysis of isothermal selective ethanol adsorption on zeolite type NaZSM-5
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DOI：
10.1002/ceat.200700147
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发表时间：
2007-09-01
影响因子：
2.1
通讯作者：
Jovanovic, Jelena
中科院分区：
文献类型：
--
作者：
Adnadevic, Borivoje;Mojovic, Zorica;Jovanovic, Jelena
用一系列标准方法(初始速率法、饱和速率法和最大速率法)测定了疏水性NaZSM-5沸石对水溶液中乙醇的选择性等温吸附动力学参数。用“模型拟合法”确定了乙醇吸附的动力学模型。用等转化率法确定了动力学参数对吸附程度的依赖关系和补偿效应的存在。用元素吸附过程活化能分布模型解释了活化能和指前因子随吸附度的复杂变化。
The kinetic parameters of the selective isothermal adsorption of ethanol from an aqueous solution onto a hydrophobic zeolite type NaZSM-5 were determined using a series of the so-called standard methods (the initial rate, the saturation rate and the maximum rate methods). The kinetic model of ethanol adsorption was determined by the "model fitting" method. The dependence of the kinetic parameters on the degree of adsorption and the presence of a compensation effect were determined by the isoconversional method. The complex changes of the activation energy and pre-exponential factor with the degree of adsorption were explained by the model of the activation energy distribution of elemental adsorption processes.