Chromatographic properties of mesoporous silica gel modified with acetylacetonates of europium and copper

Zh V. Faustova, Yu G. Slizhov, M. A. Gavrilenko

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

New mesoporous materials prepared from tetraethoxysilane, i.e., sorbents obtained with the use of surfactants, are synthesized. Their chromatographic polarity is assessed quantitatively. Their Kovats retention indices and Rohrschneider polarity coefficients are calculated. Based on physicohemical data, it is demonstrated that modifying supports with metal chelates changes the structure and properties of the initial sorbents: the differential molar Gibbs free energies rise considerably for sorbent modified with copper acetylacetonate with respect to ethanol (-ΔG′ i = 7.09 kJ/mol) and nitromethane (-ΔG′ i = 6.75 kJ/mol), relative to the initial silica gel (5.43 and 4.15 kJ/mol, respectively).

Original languageEnglish
Pages (from-to)1215-1217
Number of pages3
JournalRussian Journal of Physical Chemistry A
Volume87
Issue number7
DOIs
Publication statusPublished - Jul 2013

Fingerprint

Europium
sorbents
Silica Gel
silica gel
europium
Sorbents
Copper
copper
polarity
nitromethane
Mesoporous materials
Gibbs free energy
chelates
Surface-Active Agents
ethyl alcohol
Ethanol
Metals
surfactants
coefficients
metals

Keywords

  • chelate
  • chromatography
  • sorbent
  • synthesis

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

Chromatographic properties of mesoporous silica gel modified with acetylacetonates of europium and copper. / Faustova, Zh V.; Slizhov, Yu G.; Gavrilenko, M. A.

In: Russian Journal of Physical Chemistry A, Vol. 87, No. 7, 07.2013, p. 1215-1217.

Research output: Contribution to journalArticle

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