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: In this paper, supported ionic liquid catalysts with different loading of [Bmim]FeCl 4 embedded in silica gel were synthesized and characterized, and the results demonstrated that ionic Liquid [bmim], FeCl 4 was embedded in the silica liquid successfully with no destruction to its structure.
85 citations
TL;DR: In this paper, the three component condensation of benzil, benzaldehyde derivatives, and ammonium acetate under solvent-free conditions and microwave irradiation was demonstrated using Zeolite HY and silica gel.
Abstract: Zeolite HY and silica gel efficiently catalyzed the three component condensation of benzil, benzaldehyde derivatives, and ammonium acetate under solvent-free conditions and microwave irradiation.
85 citations
85 citations
TL;DR: New generation columns, i.e. packed with superficially porous silica particles, provide ultra-fast HPLC separations for a variety of compounds with moderate sample loading capacity and low back pressure are described.
Abstract: New generation columns, i.e. packed with superficially porous silica particles are available as trade names with following manufacturers: Halo, Ascentis Express, Proshell 120, Kinetex, Accucore, Sunshell, and Nucleoshell. These provide ultra-fast HPLC separations for a variety of compounds with moderate sample loading capacity and low back pressure. Chemistries of these columns are C(8), C(18), RP-Amide, hydrophilic interaction liquid chromatography, penta fluorophenyl (PFP), F5, and RP-aqua. Normally, the silica gel particles are of 2.7 and 1.7 μm as total and inner solid core diameters, respectively, with 0.5-μm-thick of outer porous layer having 90 A pore sizes and 150 m(2)/g surface area. This article describes these new generation columns with special emphasis on their textures and chemistries, separations, optimization, and comparison (inter and intra stationary phases). Besides, future perspectives have also been discussed.
85 citations
TL;DR: Coating with silicone polymer of silica surfaces was shown to be very effective in suppressing the undesirable peak tailing in reversed-phase liquid chromatography caused by hydrogen bonding, ion exchange and chelate formation processes as discussed by the authors.
85 citations