Reactor Studies of Metal Ions Associated with Chromatographic Silica
Abstract
Chromatographic effects from transition metal ion association with the silica used as packing materials in high-performance liquid chromatography were emphasized with special attention given to their catalytic properties and methods for studying them. Retention changes for selected solutes resulting from silica modification were also studied. For rate process analysis, a statistical method based on the first moment of the overall elution profile was developed for first-order type chemical reactions under special conditions. This approach alleviated difficulties in resolving and analyzing reactant and product overlap, and it also facilitated the study of features associated with catalysis such as adsorption. With this approach as a start and hydroquinone oxidation as a probe reaction, significant progress was made toward developing a stable, reproducible, iron(III) ion-modified silica stationary phase with considerable catalytic activity.... Chromatographic reactor, Liquid chromatography, Silica, Ferric ion, Hydroquinone oxidation, Catalysis triphenyl phosphite, Chromium ions.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 20, 1993
- Accession Number
- ADA266675
Entities
People
- Stanley H. Langer
Organizations
- University of Wisconsin–Madison