Chemistry, Physics and Technology of Surface, 2011, 2 (4), 427-431.

Adsorption Properties of Silica Sorbents with Residues of Carboxylic and Aminocarboxylic Acids onto Surface Layer



D. S. Bakulina, O. A. Dudarko, A. K. Matkovsky, G. R. Yurchenko, Yu. L. Zub

Abstract


Adsorption isotherms of nitrogen, n-hexane, pyridine, and diethylamine have been measured for silica adsorbents with residues of propionic and ethylenediaminetriacetic acids obtained by template method. The ordered structure of SBA-15 type has been found for synthesized samples with following parameters of porosity: Ssp = 550–650 m2g-1; Vs = 0.76–1.06 cm3g-1; d = 5.3–7.6 nm. The placement of carboxylic and aminocarboxylic groups in the pore surface layer and their specific adsorption interaction with electron-donor-molecules have been shown. The arrangement of adsorption isotherms of pyridine and dietylamine relatively to that of n-hexane depends on basicity of these molecules. The acidic post-synthetic treatment has been shown to be accompanied by the changes in texture rather than by appearance of additional proton-donor active cites.

Full Text:

PDF (Русский)

References


Asmus P.A., Low C.-E., Novotny M. Preparation and chromatographic evaluation of chemically bonded ion-exchange stacionary phases. II. Weak and strong cation exchanges // J. Chromatogr. − 1976. − V. 123. − P. 109−113.

Unger K., Nyamah D. Druckstabile ionenaustauscher auf der basis von porösem siliciumdioxid in der säulenflüssigchromatographie // Chromatographia. – 1974. − V. 7. − P. 63−68.

Knox J.H., Pryde A. Performance and selected applications of a new range of chemically bonded packing materials in HPLC / J. Chromatogr. − 1975. − V. 112. − P. 171−188.

Лисичкин Г.В., Кудрявцев Г.В., Сердан А.А. и др. Модифицированные кремнеземы в сорбции, катализе и хроматографии / под ред. Г.В. Лисичкина. – Москва: Химия, 1986. – 248 с.

Butterworth A.J., Clark J.H., Walton P.H., Barlow S.J. Enviromentally friendly catalysis using supported reagents catalytic epoxidation using a chemically modified silica gel // Chem. Commun. – 1996. − V. 16. – P. 1859−1860.

Мильченко Д.В., Кудрявцев Г.В., Лисичкин Г.В. Сорбция ионов металлов комплексирующими кремнеземами. Сорбция меди (II), цинка (II), хрома (III) и лантана (III) карбоксилсодержащим кремнеземом при малых заполнениях // Журн. физ. химии. – 1986. – Т. 60, № 9. – С. 2361–2363.

Bruzzoniti M.C., Prelle A., Sarzanini C. et al. Retention of heavy metal ions on SBA-15 mesoporous silica functionalized with carboxylic groups // J. Sep. Sci. – 2007.– V. 30. – P. 2114–2420.

Fiorilli S., Barbara O., Bonelli B., Garrone E. In situ infrared study of SBA-15 functionalized with carboxylic groups incorporated by a co-condensation route // J. Phys. Chem. B. – 2005. – V. 109. – Р. 16725–16729.

Shen Sh., Chow P.Sh., Kim S. et al. The synthesis of carboxyl-modified rod-like SBA-15 by rapid co-condensation // J. Colloid Interface Sci. –2008. – V. 321. – Р. 365–372.

Zub Yu.L., Chuiko A.A. Salient features of synthesis and structure of functional polysiloxane xerogels // Colloidal Silica: Fundamentals and Applications / Eds. H.E. Bergna, W.O. Roberts. – Boca Raton: CRC Press. – 2006. – P. 397–424.

Markowitz M.A., Klaehn J., Hendel R.A. et al. Direct synthesis of metal-chelating mesoporous silica: effects of added organosilanes on silicate formation and adsorption properties // J. Phys. Chem. B. – 2000. – V. 104. – Р. 10820–10826.

Dudarko О.А., Bakulina D.S., Zub Yu.L. Synthesis of silicas with carboxyl functionality using template method // Chemistry, Physics and Technology of Surface. – 2010. – V. 1, N 3. – Р. 258–262.

Brunauer J.S., Emmet P.H., Teller E. Adsorption of gases in multimolecular layers // J. Am. Chem. Soc. – 1938. – V. 60. – Р. 309–319.

Gun’ko V.M., Sheeran D.J., Augustine S.M., Blitz J.P. Structural and energetic characteristics of silicas modified by organosilicon compounds // J. Colloid Interface Sci. – 2002. – V. 249. – P. 123–133.

Gun’ko V.M. Turov V.V., Skubiszewska–Zieba J. et al. Structural and adsorptive characteristics of pyrocarbon silica gel Si-60 // Adsorption. – 2004. – V. 10. – P. 5–18.




Copyright (©) 2011 D. S. Bakulina, O. A. Dudarko, A. K. Matkovsky, G. R. Yurchenko, Yu. L. Zub

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.