. "Metathese 1-oktenu na oxidu molybdenov\u00E9m nanesen\u00E9m na mesoporesn\u00EDch molekulov\u00FDch s\u00EDtech: vliv architektury nosi\u010De"@cs . . . . "\u010Cejka, Ji\u0159\u00ED" . "Metathese 1-oktenu na oxidu molybdenov\u00E9m nanesen\u00E9m na mesoporesn\u00EDch molekulov\u00FDch s\u00EDtech: vliv architektury nosi\u010De"@cs . "Byly vyvinuty nov\u00E9 typy heterogenn\u00EDch katalyz\u00E1tor\u016F pro metathesi alken\u016F, zalo\u017Een\u00E9 na oxidu molybdenov\u00E9m nanesen\u00E9m na mesoporesn\u00EDch molekulov\u00FDch s\u00EDtech MCM-41, MCM-48 a SBA-15. Tyto nov\u00E9 syst\u00E9my p\u0159edstavuj\u00ED levn\u00E9, snadno p\u0159ipraviteln\u00E9 a vysoce aktivn\u00ED a selektivn\u00ED heterogenn\u00ED katalyz\u00E1tory pro metathese line\u00E1rn\u00EDch alken\u016F pou\u017Eiteln\u00E9 za m\u00EDrn\u00FDch reak\u010Dn\u00EDch podm\u00EDnek bez nutnosti pou\u017Eit\u00ED rozpou\u0161t\u011Bdla nebo kokatalyz\u00E1toru. Ve srovn\u00E1n\u00ED s oxidem molybdenov\u00FDm nanesen\u00FDm na konve\u010Dn\u00ED silice vyk\u00E1zaly tyto katalyz\u00E1tory v metathesi 1-oktenu zna\u010Dn\u011B vy\u0161\u0161\u00ED aktivitu se selektivitou v rozmez\u00ED od 60 % do 90 %. Nejvy\u0161\u0161\u00ED aktivitu poskytl katalyz\u00E1tor MoO3/MCM-41 se \u0161esti v\u00E1hov\u00FDmi procenty Mo (konverze 75 % po \u0161esti hodin\u00E1ch p\u0159i teplot\u011B 40 oC se selektivitou na 7-tetradecen 84 %). Turn-over frekvence katalyz\u00E1tor\u016F s loadingem 8 v\u00E1hov\u00FDch procent Mo klesala v po\u0159ad\u00ED MCM-41 > MCM-48 > SBA-15, zat\u00EDmco selektivita v uveden\u00E9m po\u0159ad\u00ED m\u00EDrn\u011B rostla."@cs . "Topka, Pavel" . . . . "New types of heterogeneous catalysts for alkene metathesis based on molybdenum oxide supported on mesoporous molecular sieves MCM-41, MCM-48 and SBA-15 were developed. These new systems represent inexpensive, easy-to-prepare and highly active and selective heterogeneous catalysts for metathesis of linear alkenes applicable under mild reaction conditions without the necessity of solvent or co-catalyst presence in the reaction mixture. In metathesis of 1-octene, these catalysts showed considerably higher activity compared with MoO3 supported on conventional silica with selectivity to 7-tetradecene being in the range between 60% and 95%. The highest activity exhibited MoO3/MCM-41 with 6 wt.% of Mo (75% conversion after 6 h at 40 oC with selectivity to 7-tetradecene 84%). The turn-over-frequency of the catalysts loaded with 8 wt.% of Mo decreased in the order MCM-41 > MCM-48 > SBA-15, while the selectivity slightly increased in the same order." . . "11"^^ . "Balcar, Hynek" . "44;54" . . . "Metathesis of 1-octene over MoO3 supported on mesoporous molecular sieves: The influence of the support architecture"@en . . . "Metathesis of 1-octene over MoO3 supported on mesoporous molecular sieves: The influence of the support architecture" . . . . . "RIV/61388955:_____/06:00044451" . . "Verpoort, F." . "Metathesis of 1-octene over MoO3 supported on mesoporous molecular sieves: The influence of the support architecture"@en . "96" . "Metathesis of 1-octene over MoO3 supported on mesoporous molecular sieves: The influence of the support architecture" . "5"^^ . . . "Rathousk\u00FD, Ji\u0159\u00ED" . "RIV/61388955:_____/06:00044451!RIV07-AV0-61388955" . "1-3" . . "New types of heterogeneous catalysts for alkene metathesis based on molybdenum oxide supported on mesoporous molecular sieves MCM-41, MCM-48 and SBA-15 were developed. These new systems represent inexpensive, easy-to-prepare and highly active and selective heterogeneous catalysts for metathesis of linear alkenes applicable under mild reaction conditions without the necessity of solvent or co-catalyst presence in the reaction mixture. In metathesis of 1-octene, these catalysts showed considerably higher activity compared with MoO3 supported on conventional silica with selectivity to 7-tetradecene being in the range between 60% and 95%. The highest activity exhibited MoO3/MCM-41 with 6 wt.% of Mo (75% conversion after 6 h at 40 oC with selectivity to 7-tetradecene 84%). The turn-over-frequency of the catalysts loaded with 8 wt.% of Mo decreased in the order MCM-41 > MCM-48 > SBA-15, while the selectivity slightly increased in the same order."@en . "1387-1811" . "\u017Dilkov\u00E1, Nad\u011B\u017Eda" . "6"^^ . "[C121545EA3D0]" . . . "Microporous and Mesoporous Materials" . "485067" . "NL - Nizozemsko" . . "P(GD203/03/H140), P(IAA4040411), Z(AV0Z40400503)" . "metathesis; 1-octene; mesoporous molecular sieves; molybdenum oxide; Raman spectroscopy"@en . .