How Microscopic Characteristics of the Adsorption Kinetics Impact Macroscale Transport in Chromatographic Beds

How Microscopic Characteristics of the Adsorption Kinetics Impact Macroscale Transport in Chromatographic Beds
复制标题

吸附动力学的微观特征如何影响色谱床中的宏观传输

DOI:
--
复制
发表时间:
2013
期刊:
影响因子:
--
通讯作者:
U. Tallarek
U. Tallarek
中科院分区:
--
文献类型:
--
作者:
D. Hlushkou;F. Gritti;A. Daneyko;G. Guiochon;U. Tallarek

文献摘要

参考文献

被引文献

相似文献

色谱法旨在使分析物相对于其分散运输(峰加宽)的差异迁移(分离)最大化。这种动力学涉及到一个复杂的传输方案,具有层次结构的特征时间和长度尺度,从分析物表面相互作用到有效的宏观尺度传输行为。在这里,我们报告了综合建模方法获得的结果,该方法结合了流体流动和质量传输的三维孔隙尺度模拟,即,对流扩散在多分散硬球(代表色谱床)的随机填料的间隙空隙空间与分析物吸附在填料的固-液界面的随机模型。分析物的保留因子通过独立调整吸附概率和平均吸附时间来构建。该方法可以实现任何微观模型的吸附动力学的基础上的吸附停留时间的分布表示在解析或数值。
Chromatography aims at maximizing the differential migration (separation) of analytes relative to their dispersive transport (peak broadening). This dynamics involves a complex transport scheme with a hierarchy of characteristic time and length scales, from analyte–surface interactions to effective macroscale transport behavior. Here we report on results obtained with a comprehensive modeling approach that combines three-dimensional pore-scale simulations of fluid flow and mass transport, i.e., advection–diffusion in the interstitial void space of a random packing of polydisperse hard spheres (representing a chromatographic bed) with the stochastic model of analyte sorption at the solid–liquid interface of the packing. The retention factor of an analyte is constructed by independent adjustment of the adsorption probability and the mean adsorption time. The approach can realize any microscopic model of the adsorption kinetics based on a distribution of adsorption sojourn times expressed in analytical or nu...
DOI: 10.1021/la0613225
发表时间: 2006-11
期刊: Langmuir : the ACS journal of surfaces and colloids
影响因子: --
作者:
Yan Yao;K. Czymmek;R. Pazhianur;A. Lenhoff
通讯作者: Yan Yao;K. Czymmek;R. Pazhianur;A. Lenhoff
DOI: 10.1016/j.chroma.2012.08.086
发表时间: 2012-11
期刊: Journal of chromatography. A
影响因子: --
作者:
S. Khirevich;A. Höltzel;A. Seidel-Morgenstern;U. Tallarek
通讯作者: S. Khirevich;A. Höltzel;A. Seidel-Morgenstern;U. Tallarek
DOI: 10.1016/j.chroma.2012.10.027
发表时间: 2012
期刊: Journal of chromatography. A
影响因子: --
作者:
S. Bruns;D. Stoeckel;B. M. Smarsly;U. Tallarek
通讯作者: U. Tallarek
DOI: 10.1016/j.chroma.2012.03.005
发表时间: 2012-05-11
期刊: Journal of chromatography. A
影响因子: --
作者:
Koku H;Maier RS;Schure MR;Lenhoff AM
通讯作者: Lenhoff AM
DOI: 10.1021/ac300326k
发表时间: 2012-05-15
影响因子: 7.4
作者:
Bruns, Stefan;Grinias, James P.;Tallarek, Ulrich
通讯作者: Tallarek, Ulrich