Preparation and Characterization of Some Ethyl-Phenyl Modified Stationary Phases

被引：1

作者：

Marutoiu, Olivia Florena ^{[1
]}

Tigae, Cristian ^{[2
]}

Marutoiu, Constantin ^{[3
]}

Kacso, Irina ^{[4
]}

Bratu, Ioan ^{[4
]}

Perhaita, Ioana ^{[5
]}

机构：

[1] Univ Babes Bolyai, Fac Chem & Chem Engn, Cluj Napoca 400028, Romania

[2] Univ Craiova, Fac Chem, Craiova, Romania

[3] Univ Babes Bolyai, Fac Orthodox Theol, R-3400 Cluj Napoca, Romania

[4] Natl Inst Res & Dev Isotop & Mol Technol, Cluj Napoca, Romania

[5] Univ Babes Bolyai, Raluca Ripan Inst Res Chem, Cluj Napoca 400294, Romania

来源：

JPC-JOURNAL OF PLANAR CHROMATOGRAPHY-MODERN TLC | 2012年 / 25卷 / 06期

关键词：

Non-polar chemically modified silica gel; Non-polar chemically modified diatomaceous earth; Thermal analysis; THIN-LAYER-CHROMATOGRAPHY; MODIFIED DIATOMACEOUS-EARTH; MCM-41 SILICA SPHERES; GEL;

D O I：

10.1556/JPC.25.2012.6.10

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Diatomaceous earth from Filia and silica gel RH were chemically modified with trimethoxyethylphenylsilane. The as-obtained compounds have been characterized using covering density, Fourier transform infrared (FTIR) spectroscopy, thermal analysis, and thin layer chromatography. Coverage degree (a) of chemically modified silica gel and of diatomaceous earth are in agreement with literature data. FTIR data have shown the chemical modifications of these two stationary phases. TG-DTA-DTG investigation of chemically modified stationary phases indicates that the exothermic effects can be assigned to the removal of phenyl moiety and also to the water removal from the residual silanols. The analysis of the chromatographic data demonstrates that the separations on ethyl-phenyl-modified adsorbents are similar with the ones performed on C-8 Merck plates.

引用

页码：548 / 553

页数：6

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