. "3"^^ . "369580" . . "0743-7463" . . "6"^^ . "[2F528ACF6D88]" . . . "RIV/61388955:_____/08:00315228" . . "24" . "3"^^ . . "Grafting of alumina on SBA-15: Effect of surface roughness"@en . . . . "P(KAN100400701), Z(AV0Z40400503)" . . "Grafting of alumina on SBA-15: Effect of surface roughness" . "Grafting of alumina on SBA-15: Effect of surface roughness"@en . . . . "Alumina-grafted materials were prepared by postsynthesis alumination of mesoporous SBA-15 silica in an aqueous solution of aluminum chlorhydrol. Prepared samples were characterized by nitrogen adsorption, scanning electron microscopy, X-ray powder diffraction, and Al-27 magic-angle-spinning NMR. The successive grafting of alumina on SBA-15 leads to a gradual filling of the corona surrounding the mesopores. As a consequence smoothing of the mesopore surface takes place. The in-depth analysis of nitrogen adsorption data proves that the alpha(s) method affords real values of the structure parameters, while the Kruk, Jaroniec, and Sayari (KJS) procedure based on the BJH algorithm provides only effective data corresponding to cylindrical mesopores of smooth geometrical surface. The quantification of the roughness of the SBA-15 mesopore surface based on the comparison of data obtained from the alpha(s) plot and KJS method was carried out."@en . . "Postsynt\u00E9zn\u00ED modifikac\u00ED mesopor\u00E9zn\u00ED siliky SBA-15, prov\u00E1d\u011Bn\u00E9 z vodn\u00FDch roztok\u016F hydroxid-chloridu hlinit\u00E9ho, byla p\u0159ipravena \u0159ada aluminovan\u00FDch materi\u00E1l\u016F. V\u0161echny vzorky byly charakterizov\u00E1ny adsorpc\u00ED dus\u00EDku, rastrovac\u00ED elektronovou mikroskopi\u00ED, difrakc\u00ED rentgenova z\u00E1\u0159en\u00ED a MAS 27Al NMR. Bylo uk\u00E1z\u00E1no, \u017Ee aluminace vede k postupn\u00E9mu zapl\u0148ov\u00E1n\u00ED korony, je\u017E obklopuje mesop\u00F3ry; d\u016Fsledkem toho pak je vyhlazov\u00E1n\u00ED vnit\u0159n\u00EDho povrchu mesop\u00F3r\u016F. Detailn\u00ED analyza adsorp\u010Dn\u00EDch isoterem dus\u00EDku prok\u00E1zala, \u017Ee alpha(s) metoda poskytuje skute\u010Dn\u00E9 hodnoty strukturn\u00EDch parametr\u016F, zat\u00EDm co metoda Kruka, Jaroniece a Sayariho zalo\u017Een\u00E1 na BJH algoritmu ud\u00E1v\u00E1 pouze efektivn\u00ED data odpov\u00EDdaj\u00EDc\u00ED cylindrick\u00FDm mesop\u00F3r\u016Fm s hladk\u00FDm geometrick\u00FDm povrchem. Na z\u00E1klad\u011B porovn\u00E1n\u00ED obou zm\u00EDn\u011Bn\u00FDch metod byla navr\u017Eena kvantifikace povrchov\u00E9 drsnosti."@cs . . . "RIV/61388955:_____/08:00315228!RIV09-AV0-61388955" . "Pokr\u00FDv\u00E1n\u00ED siliky SBA-15 aluminou: vliv povrchov\u00E9 drsnosti"@cs . "Alumina-grafted materials were prepared by postsynthesis alumination of mesoporous SBA-15 silica in an aqueous solution of aluminum chlorhydrol. Prepared samples were characterized by nitrogen adsorption, scanning electron microscopy, X-ray powder diffraction, and Al-27 magic-angle-spinning NMR. The successive grafting of alumina on SBA-15 leads to a gradual filling of the corona surrounding the mesopores. As a consequence smoothing of the mesopore surface takes place. The in-depth analysis of nitrogen adsorption data proves that the alpha(s) method affords real values of the structure parameters, while the Kruk, Jaroniec, and Sayari (KJS) procedure based on the BJH algorithm provides only effective data corresponding to cylindrical mesopores of smooth geometrical surface. The quantification of the roughness of the SBA-15 mesopore surface based on the comparison of data obtained from the alpha(s) plot and KJS method was carried out." . "\u010Cejka, Ji\u0159\u00ED" . "\u0160iklov\u00E1, Helena" . "000258722100096" . "Grafting of alumina on SBA-15: Effect of surface roughness" . "US - Spojen\u00E9 st\u00E1ty americk\u00E9" . . "Langmuir" . "alumina-grafted materials; SBA-15; Nitrogen adsorption"@en . . "Pokr\u00FDv\u00E1n\u00ED siliky SBA-15 aluminou: vliv povrchov\u00E9 drsnosti"@cs . "Zukal, Arno\u0161t" . "17" .