|
|||||
|
|
A chromatographic comparison of the pore structure of zirconia high performance liquid chromatographic materials made by the polymerization induced colloidal aggregation and the Oil Emulsion methods |
|
| Authors: | C. J. Dunlap P. W. Carr A. V. McCormick |
| Affiliation: | (1) Department of Chemistry, University of Minnesota, Kolthoff and Smith Halls, 207 Pleasant St SE, 55455 Minneapolis, MN, USA;(2) Department of Chemical Engineering and Materials Science, University of Minnesota, Amundson Hall, 421 Washington Ave SE, 55455 Minneapolis, MN, USA |
| Abstract: | Summary The pore structures of zirconium oxide particles prepared by two different methods (PICA and Oil Emulsion processes) are compared. Nitrogen sorptometry and size exclusion chromatography are used to characterize the two different types of particles. Significant and unexpected differences were found in the accessible pore volumes and the bed packing densities of the two materials. The PICA material was found to have a higher totally included and totally excluded volume than would be normally expected. The chromatographic method provides results which are more useful for the application of these materials to separation sciences. |
| Keywords: | Column liquid chromatography Size exclusion chromatography Pore structure Nitrogen sorptometry Zirconium oxide |
| 本文献已被 SpringerLink 等数据库收录！ | |