"Z(AV0Z4040901)" . . "Journal of Physical Chemistry" . "\u017Dilkov\u00E1, Nad\u011B\u017Eda" . "Mechanismus synt\u00E9zy uspo\u0159\u00E1dan\u00E9 mezopor\u00E9zn\u00ED aluminy navr\u017Een\u00E9 Yadou a kolektivem (sodiumdodecyl sulf\u00E1t (SDS) byl pou\u017Eit jako templ\u00E1t) byl studov\u00E1n pomoc\u00ED NMR difuzn\u00ED, spinov\u00E9 a fluorescen\u010Dn\u00ED testovac\u00ED techniky. Pokud byla pou\u017Eita mo\u010Dovina jako prekurzor doch\u00E1zelo ke zna\u010Dn\u00E9mu zkr\u00E1cen\u00ED dlouh\u00FDch klubkovit\u00FDch cylindrick\u00FDch agreg\u00E1t\u016F, kter\u00E9 jsou charakteristick\u00E9 pro SDS micel\u00E1rn\u00ED roztoky s p\u0159ebytkem soli hlin\u00EDku. Vznik hexagon\u00E1ln\u00ED aluminy byl sledov\u00E1n pomoc\u00ED spinov\u00E9 techniky. Nebyly pozorov\u00E1ny \u017E\u00E1dn\u00E9 strukturn\u00ED zm\u011Bny b\u011Bhem hydrol\u00FDzy mo\u010Doviny, p\u0159ed t\u00EDm, ne\u017E do\u0161lo ke sr\u00E1\u017Een\u00ED. Ve sra\u017Eenin\u011B byl nalezen templ\u00E1t SDS a bylo zji\u0161t\u011Bno, \u017Ee templ\u00E1t reaguje s hlinitanov\u00FDmi \u010D\u00E1sticemi. Na z\u00E1klad\u011B analogie s vytv\u00E1\u0159en\u00EDm sra\u017Eeniny z hexagon\u00E1ln\u00EDch krystal\u016F Al-DS v t\u0159\u00EDslo\u017Ekov\u00E9m SDS/Al(NO3)3/H2O syst\u00E9mu byl navr\u017Een model sr\u00E1\u017Een\u00ED."@cs . "7735;7743" . "Caragheorgheopol, A." . "Structural Characterization of Micellar Aggregates in Sodium Dodecyl Sulfate/Aluminum Nitrate/Urea/Water System in the Synthesis of Mesoporous Alumina" . "7"^^ . . "588456" . "The mechanism of templated synthesis of ordered mesoporous alumina according to the recipe proposed by Yada et al. (M. Yada, M. Machida, T. Kijima, Chem. Commun. 1996, 769) using sodium dodecylsulfate (SDS) as template, has been investigated by NMR self-diffusion and spin and fluorescence probe techniques. In the precursor solutions urea was found to produce a substantial shortening of the long entangled cylindrical aggregates characteristic of the SDS micellar solutions with aluminum salt in large excess. The formation of mesostructured hexagonal alumina was followed using spin probes incorporated in the SDS aggregates. No structural changes were observed during urea hydrolysis, before the onset of the precipitation. In the precipitate, the presence of the surfactant template is demonstrated as well as its interaction with the aluminum species. Time evolution of this interaction is also observed. Finally, the influence of the composition of the precursor system."@en . "Angelescu, D." . . "mesoporous alumina; nitrate; water system"@en . . "[F1DF5B1705A9]" . "Structural Characterization of Micellar Aggregates in Sodium Dodecyl Sulfate/Aluminum Nitrate/Urea/Water System in the Synthesis of Mesoporous Alumina" . "Caldararu, H." . "The mechanism of templated synthesis of ordered mesoporous alumina according to the recipe proposed by Yada et al. (M. Yada, M. Machida, T. Kijima, Chem. Commun. 1996, 769) using sodium dodecylsulfate (SDS) as template, has been investigated by NMR self-diffusion and spin and fluorescence probe techniques. In the precursor solutions urea was found to produce a substantial shortening of the long entangled cylindrical aggregates characteristic of the SDS micellar solutions with aluminum salt in large excess. The formation of mesostructured hexagonal alumina was followed using spin probes incorporated in the SDS aggregates. No structural changes were observed during urea hydrolysis, before the onset of the precipitation. In the precipitate, the presence of the surfactant template is demonstrated as well as its interaction with the aluminum species. Time evolution of this interaction is also observed. Finally, the influence of the composition of the precursor system." . . "Strukturn\u00ED charakterizace micel\u00E1rn\u00EDch agreg\u00E1t\u016F v syst\u00E9mu dodecylsulf\u00E1t/dusi\u010Dnan hlinit\u00FD/mo\u010Dovina/voda p\u0159i synt\u00E9ze mezopor\u00E9zn\u00ED aluminy"@cs . . "2"^^ . "Structural Characterization of Micellar Aggregates in Sodium Dodecyl Sulfate/Aluminum Nitrate/Urea/Water System in the Synthesis of Mesoporous Alumina"@en . . "RIV/61388955:_____/04:00101082" . "9"^^ . . . "1089-5647" . "108" . "Strukturn\u00ED charakterizace micel\u00E1rn\u00EDch agreg\u00E1t\u016F v syst\u00E9mu dodecylsulf\u00E1t/dusi\u010Dnan hlinit\u00FD/mo\u010Dovina/voda p\u0159i synt\u00E9ze mezopor\u00E9zn\u00ED aluminy"@cs . . "\u010Cejka, Ji\u0159\u00ED" . "Structural Characterization of Micellar Aggregates in Sodium Dodecyl Sulfate/Aluminum Nitrate/Urea/Water System in the Synthesis of Mesoporous Alumina"@en . . . "US - Spojen\u00E9 st\u00E1ty americk\u00E9" . . . . "Vasilescu, M." . . "Khan, A." . "RIV/61388955:_____/04:00101082!RIV/2005/AV0/A54005/N" . "-" .