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Modification of a surface of colloidal size silica particles by chemisorption of 2-propanol via azeotropic distillation process

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dc.title Modification of a surface of colloidal size silica particles by chemisorption of 2-propanol via azeotropic distillation process en
dc.contributor.author Ptáček, Petr
dc.contributor.author Havlica, Jaromír
dc.contributor.author Kuřitka, Ivo
dc.relation.ispartof Chemické listy
dc.identifier.issn 0009-2770 OCLC, Ulrich, Sherpa/RoMEO, JCR
dc.date.issued 2005
utb.relation.volume 99
utb.relation.issue 14
dc.citation.spage s411
dc.citation.epage s414
dc.type conferenceObject
dc.language.iso en
dc.description.abstract The surface properties of colloidal silica particles have been changed by chemisorption of 2-propanol on to silanol (≡Si-OH) groups in anhydrous medium via azeotropic distillation. Sodium ion stabilized silica sol was used as a source of the amorphous SiO2 particles with diameter in range 9-15 nm for utilization in sol-gel process. The hydroxyl groups (-OH) on surface were replacing by alkoxy groups (-OC3H7). The chemisorption of C3H8O on silica surface was carried out in the ternary azeotropic system isopropanol-water-benzene. The main advantage of this process is low temperature for the substitution of the isopropoxy groups for the silanols and the possibilities to the recycling of the chemicals after the esterification. DTA and FTIR methods were used for the characterization of the prepared precursor. en
utb.faculty Faculty of Technology
dc.identifier.uri http://hdl.handle.net/10563/1005017
utb.identifier.scopus 2-s2.0-31444432295
utb.identifier.coden CHLSA
utb.source d-scopus
dc.date.accessioned 2015-06-04T12:56:43Z
dc.date.available 2015-06-04T12:56:43Z
utb.contributor.internalauthor Kuřitka, Ivo
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