Abstract
The paper concerns studies of the porous structure of spherical microparticles resulting from the polycondensation of urea and formaldehyde in the presence of silica sol (UFR–SG) and silica gel microspheres prepared from the latter. It is disclosed that, when the content of colloidal silica increases, the specific surface area of UFR–SG system rises and the porous structure (pore size distribution) of the obtained silica gel microspheres becomes more uniform.
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REFERENCES
Majors, R.E.,LC-GC Int., Apr. 1998, p. 7.
Majors, R.E.,LC-GC Int., Apr. 1997, p. 220.
Dolan, J.W.,LC-GC Int., May 1998, p. 292.
Airapetyan, S.S. and Khachatryan, A.G.,Kolloidn. Zh.,2004, vol. 66, no. 1, p. 120.
US Patent 4 010 247, 1977.
Catalog of Agilent Technologies, 2000.
Catalog of Micra, 1997.
US Patent 4 893 369, 1991.
US Patent 5 304 364, 1992.
Hanson, M. and Unger, K.K.,LC-GC Int., Oct. 1996,p. 650.
Iler, R.K.,The Chemistry of Silica: Solubility, Polymerization, Colloid and Surface Properties, and Biochemistry of Silica, New York: Wiley, 1979.
Neimark, I.E., Sinteticheskie mineral'nye adsorbenty i nositeli katalizatorov(Synthetic Mineral Adsorbents and Catalyst Carriers), Kiev: Naukova Dumka, 1982.
Dzis'ko, V.A., Karnaukhov, A.P., and Tarasova, D.V., Fiziko-khimicheskie osnovy sinteza okisnykh katalizatorov (Physicochemical Principles of the Synthesis of Oxide Catalysts), Novosibirsk: Nauka, 1978.
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Hayrapetyan, S.S., Khachatryan, H.G. Effect of Colloidal Silica on the Porous Structure Parameters of Microspheres Prepared from Urea Formaldehyde Resin and Silica Gel. Colloid Journal 66, 400–403 (2004). https://doi.org/10.1023/B:COLL.0000037443.51990.ac
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DOI: https://doi.org/10.1023/B:COLL.0000037443.51990.ac