"Studies in Surface Science and Catalysis" . . . "Exploring the catalytic activity of regular and ultralarge-pore Nb,Sn-SBA-15 mesoporous molecular sieves" . "P(1ET400400413), P(FT-TA/040), R, Z(AV0Z40400503)" . . "Exploring the catalytic activity of regular and ultralarge-pore Nb,Sn-SBA-15 mesoporous molecular sieves" . "2"^^ . "6"^^ . . "1432;1437" . "0167-2991" . "A novel bifunctional mesoporous material Nb,Sn-SBA-15 has been synthesized in one pot synthesis by in-situ introduction of niobium and tin salts and by controlling the synthesis conditions. These molecular sieves possess a high dispersion of both metals resulting in both the strong and weak acidic sites being simultaneously formed on SBA-15. Optimization of acid concentration in synthetic gels resulted in tuning of pore geometries while maintaining high structural regularity and in silica frameworks appropriate for catalytic applications were proved by UV-vis spectroscopy and catalytic reaction. Activity and selectivity of niobium/tincontaining mesoporous molecular sieves have been tested in liquid phase oxidation of cyclohexene. On the basis of this investigation, the new efficient NbSBA-15 catalyst prepared via conventional synthesis has been selected." . . . "RIV/61388955:_____/07:00085035" . "170" . "\u010Cejka, Ji\u0159\u00ED" . . "V\u00FDzkum katalytick\u00E9 aktivity na b\u00E1zi Nb,Sn-SBA-15 mesopor\u00E9zn\u00EDch molekulov\u00FDch s\u00EDt"@cs . "Byl syntetizov\u00E1n nov\u00FD mesopor\u00E9zn\u00ED materi\u00E1l na b\u00E1zi Nb,Sn-SBA-15 p\u0159im\u00FDm p\u0159id\u00E1n\u00EDm Sn a Nb do reak\u010Dn\u00ED sm\u011Bsi. Tento katalyz\u00E1tor vykazuje vysokou disperzitu obou kov\u016F v k\u0159emi\u010Ditanov\u00E9 matrici. Optimalizace reak\u010Dn\u00EDch podm\u00EDnek umo\u017Enla tvorbu mesopor\u00E9zn\u00EDho s\u00EDta s velikost\u00ED por\u016F a\u017E 14 nm. Koordinace atom\u016F byla studov\u00E1na pomoc\u00ED UV-VIS a katalytick\u00FDch test\u016F p\u0159i oxidaci cyklohexenu v kapaln\u00E9 f\u00E1zi. Poda\u0159ilo se p\u0159ipravit nov\u00FD typ katalyz\u00E1toru s vysokou oxida\u010Dn\u00ED aktivitou."@cs . . "-" . "mesoporous molecular sieves; ultralerge-pore; Nb,Sn-SBA-15"@en . . "Exploring the catalytic activity of regular and ultralarge-pore Nb,Sn-SBA-15 mesoporous molecular sieves"@en . "RIV/61388955:_____/07:00085035!RIV08-AV0-61388955" . . "A novel bifunctional mesoporous material Nb,Sn-SBA-15 has been synthesized in one pot synthesis by in-situ introduction of niobium and tin salts and by controlling the synthesis conditions. These molecular sieves possess a high dispersion of both metals resulting in both the strong and weak acidic sites being simultaneously formed on SBA-15. Optimization of acid concentration in synthetic gels resulted in tuning of pore geometries while maintaining high structural regularity and in silica frameworks appropriate for catalytic applications were proved by UV-vis spectroscopy and catalytic reaction. Activity and selectivity of niobium/tincontaining mesoporous molecular sieves have been tested in liquid phase oxidation of cyclohexene. On the basis of this investigation, the new efficient NbSBA-15 catalyst prepared via conventional synthesis has been selected."@en . . . "421350" . . . "Feliczak, A." . "NL - Nizozemsko" . . "Nekoksov\u00E1, Iveta" . . "Exploring the catalytic activity of regular and ultralarge-pore Nb,Sn-SBA-15 mesoporous molecular sieves"@en . . . . "V\u00FDzkum katalytick\u00E9 aktivity na b\u00E1zi Nb,Sn-SBA-15 mesopor\u00E9zn\u00EDch molekulov\u00FDch s\u00EDt"@cs . "[9D8176C333DC]" . . "Tomczak, A." . "5"^^ . . "Nowak, I." .