The Development of Stationary Phase Supports For Liquid Chromatography. I. Examination of the Pore Structure of Zirconia-Silica Composites Using Size Exclusion Chromatography

• Published in: Journal of liquid chromatography & related technologies Vol. 21; no. 12; pp. 1749 - 1765
• Main Authors: Shalliker, R. A., Douglas, G. K.
• Format: Journal Article
• Language: English
• Published: Colchester Taylor & Francis Group 01.07.1998; Taylor & Francis
• Subjects: Analytical chemistry; Chemistry; Chromatographic methods and physical methods associated with chromatography; Exact sciences and technology; Other chromatographic methods; Pore structure; HPLC chromatography; Temperature effect; Experimental study; Fabrication property relation; Porous material; Silica; Composite material; Calcining; Gel permeation chromatography; Pore size; Medium effect; Efficiency; Concentration effect; Silicon Oxides; Silica gel; Fabrication structure relation; Zirconium Oxides; Porosity; Stationary phase; Sodium Chlorides
• ISSN: 1082-6076; 1520-572X
• DOI: 10.1080/10826079808005889

In this first part of a two part series, the pore structure of zirconia-silica composite stationary phase supports was examined using size exclusion chromatography. The study found that the pore structure was more complex than pure zirconia surfaces. With these composite materials, the pore dimensions are primarily dependent on the concentration of the silicon doping, the temperature of calcination, and the presence of salts during calcination. Silicon concentration influences the phase crystallization which, in turn, alters the temperature at which micropores transform to mesopores. Calcination in the presence of sodium chloride increased the surface area and pore volume of the support.