Preparation and Characterization of Zirconia-Silica and Zirconia-Magnesia Supports for Normal-Phase Liquid Chromatography
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In this article, two kinds of zirconia-containing mixed oxide gels were synthesized as rigid microparticulates by means of the sol-gel process and the physical and chemical characteristics, such as the particle-size distribution, the specific surface area, the crystal structures and the acid-base properties of the oxides, were examined.Abstract:
Two kinds of zirconia-containing mixed oxide gels (zirconia-silica and zirconia-magnesia) were synthesized as rigid microparticulates by means of the sol-gel process. The physical and chemical characteristics, such as the particle-size distribution, the specific surface area, the crystal structures and the acid-base properties of the oxides, were examined. The molar ratio of Si/Zr and Mg/Zr on the surface of the two mixed oxides was estimated, respectively, by means of electron spectroscopy. The chromatographic performance of zirconia-silica and zirconia-magnesia was compared to that of silica and zirconia with pyridine and phenol as solutes. The separations of nitroanilines and toluidines were achieved on the two mixed oxides under normal-phase liquid chromatographic conditions, respectively.read more
Citations
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References
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Journal ArticleDOI
Chemistry of zirconia and its use in chromatography
TL;DR: The purpose of this review is to shed some light on the complex properties of zirconia's surface chemistry in order to better understand its behaviour under chromatographic conditions and shows that the main difficulty in achieving a wider variety of applications is probably the lack of knowledge and poor understanding of zIRconia’s surface chemistry.
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Synthesis and characterization of highly stable bonded phases for high-performance liquid chromatography column packings
TL;DR: Synthese d'une silice modifiee par des silanes and presentant une bonne stabilite a l'hydrolyse as mentioned in this paper is presented.
Journal ArticleDOI
Comparison of an ordered mesoporous aluminosilicate, silica, alumina, titania and zirconia in normal-phase high-performance liquid chromatography
TL;DR: The mesoporous aluminosilicate MCMMCM-41 as mentioned in this paper is an ordered mesopore material with a regular pore structure composed of an assembly of hexagonal tubes with a pore diameter of 4 nm.
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