Native and stearic acid modified ceria-zirconia supports in normal and reversed-phase HPLC

Citation
Yl. Hu et al., Native and stearic acid modified ceria-zirconia supports in normal and reversed-phase HPLC, TALANTA, 54(1), 2001, pp. 79-88
Citations number
34
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences
Journal title
TALANTA
ISSN journal
0039-9140 → ACNP
Volume
54
Issue
1
Year of publication
2001
Pages
79 - 88
Database
ISI
SICI code
0039-9140(20010330)54:1<79:NASAMC>2.0.ZU;2-D
Abstract
Porous ceria-zirconia composite with narrow particle size distribution and large specific surface area was synthesized by a sol-gel process. Chromatog raphic properties of the native supports was investigated in normal phase m ode for the separation of test mixtures of basic, neutral and acidic compou nds. The new packing material exhibited polar and basic properties, which a re suitable for the separation of basic compounds. Lypophilic packing has b een obtained by the modification of the ceria-zirconia with stearic acid, w hich exhibited strong hydrophobicity relative to the native packing. Theref ore, the modified ceria-zirconia behaves as a reversed-phase packing materi al. Different selectivity towards basic compounds was observed on the new p acking compared to the native ceria-zirconia and conventional ODS stationar y phase. (C) 2001 Elsevier Science B.V. All rights reserved.