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activated alumina |
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activated alumina n (Chemistry / Elements & Compounds) a granular highly porous and adsorptive form of aluminium oxide, used for drying gases and as an oil-filtering material and catalyst How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| ? Mentioned in | ? References in periodicals archive | |
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Reacted fluorine gases are
removed after use by scrubbing with activated alumina. The extract was then
dried over anhydrous sodium sulfate and cleaned up using the following
column chromatography procedures: a) layered acidic-basic silica gel
column, eluted with hexane; b) activated alumina column, eluted with
hexane (discarded) followed by elution with 1:1 dichloromethane: hexane
(collected); c) carbon on celite column (4. Activated alumina is a filter medium
that will remove a variety of contaminants, including fluoride, arsenic
(both arsenite and arsenate), and selenium, but it requires periodic
cleaning with an appropriate regenerant such as alum or caustic in order
to remain effective. |
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