Topic
Silica gel
About: Silica gel is a research topic. Over the lifetime, 22313 publications have been published within this topic receiving 325516 citations. The topic is also known as: Amorphous silica & Precipitated amorphous silica.
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TL;DR: The immobilization procedures, such as the pretreatment of silica gel, silanization, crosslinking, glutaraldehyde modification, and elimination of unreated aldehyde groups, were all optimized.
76 citations
TL;DR: In this article, the retention characteristics of 52 aromatic hydrocarbons, mostly alkylbenzenes, were measured on porous graphite using methanol as the mobile phase.
76 citations
TL;DR: In this article, the authors evaluated several currently used column liquid chromatography systems (reversed phase octadecylated silica gel, amino modified silica, polyol derivatised silica and anion exchange systems).
Abstract: This contribution to the problems of carbohydrate (sugar) column liquid chromatography, evaluates several currently used systems (reversed phase octadecylated silica gel, amino modified silica gel, cation exchangers on polystyrene and on silica gel basis, polyol derivatised silica gel and anion exchange systems). The elution pattern, analysis time, column efficiency and column life time expectancy are considered to be the important points for this comparison. The application of silica gel-based cation exchanger and of polyol derivatised silica gel is new to this field. The comparison and/or evaluation tries to be critical and to come to a conclusion for the choice of a recommended system.
76 citations
TL;DR: In this article, the process of dimerization and disaggregation of rhodamine 6G in tetraethoxysilane-derived silica gel films was studied using UV-visible and fluorescence spectroscopy.
Abstract: The process of dimerization and disaggregation of rhodamine 6G in tetraethoxysilane-derived silica gel films was studied using UV-visible and fluorescence spectroscopy. Pyranine (8-hydroxy trisulfonated pyrene) was also used as a fluorescence probe to study the chemical evolution in the films during drying. Rh6G dimers were found in the as-deposited films although only monomers were observed in the sols. Larger amounts of dimers were found in the films prepared from the solutions of higher dye concentration and water content. During drying up to 150°C, the dimers changed gradually into monomers. The dimer-to-monomer transformation was explained by the evaporation of the solvent from the films.
76 citations
TL;DR: A simple imprinted amino-functionalized silica gel material was synthesized by combining a surface molecular imprinting technique with a sol-gel process for solid-phase extraction-high performance liquid chromatography (SPE-HPLC) determination of diethylstilbestrol (DES).
76 citations