Evaluation of isostructural metal-organic frameworks coated capillary columns for the gas chromatographic separation of alkane isomers

被引：52
作者：
Fan, Lin [1 ,2 ]
Yan, Xiu-Ping [1 ,2 ]
机构：
[1] Nankai Univ, Coll Chem, State Key Lab Med Chem Biol, 94 Weijin Rd, Tianjin 300071, Peoples R China
[2] Nankai Univ, Coll Chem, Res Ctr Analyt Sci, Tianjin 300071, Peoples R China
来源：
TALANTA | 2012年 / 99卷
基金：
中国国家自然科学基金;
关键词：
Metal-organic frameworks; Stationary phase; Gas chromatography; Alkane isomers; Separation; XYLENE ISOMERS; METHANE STORAGE; ADSORPTION; PORE; SORPTION; SITES; ETHYLBENZENE; SELECTIVITY; CHEMISTRY; ZEOLITES;
D O I：
10.1016/j.talanta.2012.07.063
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Isostructural metal-organic frameworks (MOFs) MIL-100(Fe) and MIL-100(Cr), which have identical organic linker and Mobil Thirty-Nine zeolitic type, but different metal ions, were exploited as stationary phases for capillary gas chromatographic separation of alkane isomers. MIL-100(Fe) coated capillary column showed great capability and high efficiency for the gas chromatographic separation of alkane isomers without the need of temperature-programming, while MIL-100(Cr) coated capillary column gave poor performance for the separation. The separation performance of MIL-100(Fe) coated capillary column was even better than commercial HP-5MS and GS-GasPro capillary columns. The determined McReynolds constants, adsorption enthalpies and entropies showed that MIL-100(Fe) coated capillary column gave relatively weaker interaction with alkane isomers than MIL-100(Cr) coated capillary column. The relative standard deviations of repeatability for C7 alkane isomers on MIL-100(Fe) coated capillary column were 0.06-0.16%, 1.1-1.5%, 2.8-3.0% and 2.1-2.4% for retention time, half peak width, peak height and peak area, respectively. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：944 / 950
页数：7
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