Estimation of competitive adsorption isotherms based on nonlinear frequency response experiments using equimolar mixtures–numerical analysis for racemic mixtures

Estimation of competitive adsorption isotherms based on nonlinear frequency response experiments using equimolar mixtures–numerical analysis for racemic mixtures
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基于使用等摩尔混合物的非线性频率响应实验的竞争吸附等温线的估计对外消旋混合物的数值分析

DOI:
10.1016/j.ces.2012.11.032
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发表时间:
2013
影响因子:
4.7
通讯作者:
M. Petkovska
M. Petkovska
中科院分区:
工程技术2区
文献类型:
--
作者:
I. Mutavdzin;A. Seidel-Morgenstern;M. Petkovska

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的非线性频率响应方法的竞争性吸附等温线的估计,基于分析的色谱柱的入口浓度的正弦扰动的响应,被修改以这样的方式,只需要实验与50:50的入口混合物,从而使其适用于对映异构体的外消旋混合物。通过数值实验验证了改进方法的适用性。采用色谱柱的平衡分散模型,采用竞争性Langmuir等温线,模拟了3个不同稳态点、4个不同输入振幅和多个输入频率下的频率响应。结果表明,利用等摩尔混合物的非线性频率响应实验来估算竞争吸附等温线是可行的。
The nonlinear frequency response method for estimation of competitive adsorption isotherms, based on analysis of the response of a chromatographic column to sinusoidal perturbation of the inlet concentration, was modified in such a way to require experimentation with only 50:50 inlet mixtures, thus making it applicable for racemic mixtures of enantiomers. The applicability of the modified method was checked based on numerical experiments. The equilibrium dispersive model of the chromatographic column was used, with competitive Langmuir isotherm, and the frequency responses were simulated for 3 different steady-state points, 4 different input amplitudes and a number of input frequencies. It was proven that estimation of competitive adsorption isotherms from nonlinear frequency response experiments with equimolar inlet mixtures is feasible.
应用非最佳频率的非线性频率响应方法估计单一溶质吸附等温线。
DOI: 10.1016/j.chroma.2008.05.063
发表时间: 2008
期刊: Journal of chromatography. A
影响因子: --
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