Scientific Library of Tomsk State University

   E-catalog        

Normal view MARC view

Nitrate-citrate sol-gel synthesis of hydrated calcium aluminate and sorption materials on its basis E. A. Pakhnutova, L. N. Mishenina, L. A. Selyunina [et al.]

Contributor(s): Mishenina, Lyudmila N | Selyunina, Liliya A | Belyaninova, Tatyana V | Slizhov, Yuri G | Pakhnutova, Evgeniya AMaterial type: ArticleArticleSubject(s): золь-гель синтез | гидратированный трикальций алюминат | поверхностно-слойные газохроматографические сорбентыGenre/Form: статьи в журналах Online resources: Click here to access online In: Russian journal of applied chemistry Vol. 91, № 6. P. 899-907Abstract: Sol-gel technique was used to develop a method for synthesis of hydrated tricalcium aluminate Ca3[Al(OH)6]2 and surface-layered gas-chromatographic sorbents on its basis. The materials obtained were examined by X-ray diffraction analysis, scanning electron microscopy, X-ray fluorescence microanalysis, adsorption porosimetry, and gas chromatography. It was found that cubic Ca3[Al(OH)6]2 is the main phase in the surface layer of the sorption materials. The Hammett indicator method was used to examine the acid-base properties and the variation of the content of active centers between sorbents obtained in different ways. The chromatographic retention parameters were determined for test compounds, and the polarity and selectivity of the sorbents under study was evaluated. It was shown that Chromaton N-AW modified with hydrated calcium aluminate can be used, with addition of SE-30 stationary liquid phase, to separate complex mixtures of organic compounds.
Tags from this library: No tags from this library for this title. Log in to add tags.
No physical items for this record

Библиогр.: 26 назв.

Sol-gel technique was used to develop a method for synthesis of hydrated tricalcium aluminate Ca3[Al(OH)6]2 and surface-layered gas-chromatographic sorbents on its basis. The materials obtained were examined by X-ray diffraction analysis, scanning electron microscopy, X-ray fluorescence microanalysis, adsorption porosimetry, and gas chromatography. It was found that cubic Ca3[Al(OH)6]2 is the main phase in the surface layer of the sorption materials. The Hammett indicator method was used to examine the acid-base properties and the variation of the content of active centers between sorbents obtained in different ways. The chromatographic retention parameters were determined for test compounds, and the polarity and selectivity of the sorbents under study was evaluated. It was shown that Chromaton N-AW modified with hydrated calcium aluminate can be used, with addition of SE-30 stationary liquid phase, to separate complex mixtures of organic compounds.

There are no comments on this title.

to post a comment.
Share