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 language | English |
|---|---|
| Pages (from-to) | 1215-1217 |
| Number of pages | 3 |
| Journal | Russian Journal of Physical Chemistry A |
| Volume | 87 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - Jul 2013 |
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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 journal › Article
}
TY - JOUR
T1 - Chromatographic properties of mesoporous silica gel modified with acetylacetonates of europium and copper
AU - Faustova, Zh V.
AU - Slizhov, Yu G.
AU - Gavrilenko, M. A.
PY - 2013/7
Y1 - 2013/7
N2 - 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).
AB - 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).
KW - chelate
KW - chromatography
KW - sorbent
KW - synthesis
UR - http://www.scopus.com/inward/record.url?scp=84879212737&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84879212737&partnerID=8YFLogxK
U2 - 10.1134/S0036024413060083
DO - 10.1134/S0036024413060083
M3 - Article
VL - 87
SP - 1215
EP - 1217
JO - Russian Journal of Physical Chemistry A
JF - Russian Journal of Physical Chemistry A
SN - 0036-0244
IS - 7
ER -