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 article, supported Pd catalysts were demonstrated to be high active and reusable catalysts for selective hydrogenation of cinnamaldehyde to hydrocinnamalde, due to the stabilization effect of ionic liquids.
69 citations
Patent•
05 Oct 1995
TL;DR: In this paper, an improved adsorbent composition for a natural gas-fired, adsorption cooling system that readily adsorbs moisture from ambient air, while being readily regenerated at high temperatures up to 200-300 °C, is presented.
Abstract: An improved adsorbent composition for a natural gas-fired, adsorption cooling system that readily adsorbs moisture from ambient air, while being readily regenerated at high temperatures up to 200-300 °C in order to provide an enhanced coefficient of performance to the system. Such an adsorbent composition may comprise an A-type zeolite, an X-type zeolite or a chemically modified Y-type zeolite either alone, in conjunction with each other or in conjunction with alumina and/or silica gel. A rotating adsorbent wheel may be fashioned from corrugated paper comprising the adsorbent composition and a slurry of synthetic, organic fibers which are preferably polyaramid fibers. The strength of the wheel may be enhanced by surface treating it with sols or salt solutions of alumina or silica, and a highly temperature-stable epoxy or phenolic resin.
69 citations
TL;DR: The use of the fluorescent dye nile red, 9-diethylamino-5H-benzo[alpha]phenoxazine-5-one, as a general-purpose reagent for the rapid detection and quantitation of a wide variety of lipids and other hydrophobic compounds separated by thin-layer chromatography is described.
69 citations
TL;DR: The sterically hindered amine monomer 4-[3-triethoxysilylpropoxyl]-2,2,6,6-tetramethylpiperidine has been synthesized and covalently bonded to the surfaces of silica gel particles and cellulose (cotton) and copolymerized in a polyurethane coating formulation as discussed by the authors.
Abstract: The sterically hindered amine monomer 4-[3-triethoxysilylpropoxyl]-2,2,6,6-tetramethylpiperidine has been synthesized and covalently bonded to the surfaces of silica gel particles and cellulose (cotton) and copolymerized in a polyurethane coating formulation. Upon exposure to dilute sodium hypochlorite (household bleach), a very stable N-Cl bond is formed in situ at the hindered amine nitrogen site. This source of oxidative chlorine provides an antimicrobial function to the silica gel, cotton, and polyurethane. Stability, regenerability, and biocidal efficacy data are presented. The new N-halamine materials were remarkably effective against Staphylococcus aureus and Escherichia coli O157 : H7 in brief periods of contact. The materials should find application in water treatment and medical applications. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 2007
69 citations
TL;DR: The use of silica gel partition columns has been investigated in this paper for the separation of the various gibberellins from each other, but there appears to be no report of the use of such columns for the preparation of the compounds.
Abstract: ALTHOUGH there are many chromatographic methods for separating the various gibberellins from each other, there appears to be no report of the use of silica gel partition columns. Columns are more useful for preparative separations than thin layer and paper chromatographic methods. Methods using absorption columns made with charcoal and silicic acid have been described1,2. Partition columns are usually considered to provide especially mild conditions for chromatography, which may be important with compounds that tend to be somewhat labile, such as the gibberellins.
69 citations