adsorbent gel

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• silica gel — Chem. a highly adsorbent gelatinous form of silica, used chiefly as a dehumidifying and dehydrating agent. [1915 20] * * * ▪ chemical compound       a highly porous, noncrystalline form of silica used to remove moisture from gases and liquids, to …   Universalium

• silica gel — n colloidal silica resembling coarse white sand in appearance but possessing many fine pores and therefore extremely adsorbent * * * a purified form of silica (silicon dioxide) obtained by the reaction of sodium silicate with a mineral acid; used …   Medical dictionary

• silica gel — sil′ica gel n. chem. a highly adsorbent gelatinous form of silica, used chiefly as a dehumidifying and dehydrating agent • Etymology: 1915–20 …   From formal English to slang

• silica gel — n. an amorphous, highly adsorbent form of silica used as a drying agent in air conditioning equipment, as a carrier of catalysts in chemical reactions, etc …   English World dictionary

• silica gel — noun Date: 1919 colloidal silica resembling coarse white sand in appearance but possessing many fine pores and therefore extremely adsorbent …   New Collegiate Dictionary

• separation and purification — ▪ chemistry Introduction       in chemistry, separation of a substance into its components and the removal of impurities. There are a large number of important applications in fields such as medicine and manufacturing. General principles… …   Universalium

• Adsorption — is a process that occurs when a gas or liquid solute accumulates on the surface of a solid or a liquid (adsorbent), forming a film of molecules or atoms (the adsorbate). It is different from absorption, in which a substance diffuses into a liquid …   Wikipedia

• Thin layer chromatography — Separation of black ink on a TLC plate Acronym TLC Classification Chromatography Other techniques Related …   Wikipedia

• thin-layer chromatography — thin .lā ər n chromatography in which the solution containing the substances to be separated migrates by capillarity through a thin layer of the adsorbent medium (as silica gel, alumina, or cellulose) arranged on a rigid support abbr. TLC compare …   Medical dictionary

• chromatography — chromatographer, n. chromatographic /kreuh mat euh graf ik, kroh meuh teuh /, adj. chromatographically, adv. /kroh meuh tog reuh fee/, n. Chem. the separation of mixtures into their constituents by preferential adsorption by a solid, as a column… …   Universalium

• thin-layer chromatography — /thin lay euhr/, Chem. chromatography in which glass plates coated with thin layers of alumina, silica gel, or cellulose are used as an adsorbent. [1955 60; trans. of G dünnschicht chromatographie] * * * ▪ chemistry       in analytical chemistry …   Universalium