"14"^^ . . "Reaktivita bimetalick\u00FDch syst\u00E9m\u016F s,p-(Al,Sn) a p\u0159echodov\u00FDch kov\u016F (Pd,Rh): Studium objemov\u00FDch slitin a rozhran\u00ED bimetalick\u00FDch vrstev a oxid\u016F" . . . "0"^^ . . . . . . . . . . "GA202/02/0618" . "The project\u00A0was\u00A0targeted at the specific field of bimetallic interactions with a large fundamental and technological importance - interaction of transition metals with metals having s,p- metal electronic configuration\u00A0 (Pd, Rh, Ni, Ti, Al, Sn, Cu, Ag, Au"@en . "1"^^ . "1"^^ . . "Bimetalick\u00E9 katalyz\u00E1tory p\u0159edstavuj\u00ED nov\u00E9 trendy v heterogenn\u00ED katal\u00FDze. Vhodnou kombinac\u00ED dvou nebo i v\u00EDce kov\u016F na intertn\u00EDm nosi\u010Di ve form\u011B intermetalick\u00FDch klastr\u016F nebo klastr\u016F se strukturou j\u00E1dro-obal (core-shell) lze p\u0159ipravit syst\u00E9my, s nov\u00FDmi vlas"@cs . "Activation of molecules by supported metallic catalysts results from several interactions, leading to a selective weakening of intramolecular bonds in reactant molecules. This selective weakening might be due to: i) the formation of localized bonds of reactants with the surface atoms of metallic clusters, particularly at the atomic steps (defects of the crystallographic lattice) which are coordinatively unsaturated; ii) the effect of nearly free electrons of the metallic clusters; iii) the specific electronic and geometric structure of the metal-oxide interface (surface region along the border between the metallic cluster and the oxide surface); iv) the spillover effect (when the individual steps of the reaction can proceed subsequently on a metallic and then on an oxide surface or vice versa). Detailed knowledge of the role of the above mentioned individual factors in the overall process of selective activation of reactant molecules is needed for a full understanding of the molecular"@en . . . . . "2008-06-02+02:00"^^ . "Reactivity of s,p-(Al,Sn) and transition metal (Pd,Rh) bimetallic systems: Study of bulk alloys and metal-oxide interfacial bimetallic layers"@en . . . . "Aktivace molekul na povr\u0161\u00EDch dispergovan\u00FDch kovov\u00FDch katalyz\u00E1tor\u016F (kovov\u00FDch klastr\u016F) na oxidick\u00FDch nosi\u010D\u00EDch je v\u00FDsledkem \u0159ady povrchov\u00FDch interakc\u00ED, kter\u00E9 mohou v\u00E9sti k selektivn\u00EDmu oslaben\u00ED intramolekul\u00E1rn\u00EDch vazeb reaktant\u016F vlivem: a) tvorby lokalizovan\u00FDch vazeb reaktant\u016F s koordina\u010Dn\u011B nenasycen\u00FDmi povrchov\u00FDmi atomy klastru (zejm\u00E9na v m\u00EDstech atom\u00E1rn\u00EDch schod\u016F, defekt\u016F krystalov\u00E9 m\u0159\u00ED\u017Ee); b) p\u016Fsoben\u00ED %22t\u00E9m\u011B\u0159 voln\u00FDch%22 elektron\u016F kovov\u00E9ho klastru; c) specifick\u00E9 elektronick\u00E9 a geometrick\u00E9 struktury na rozhran\u00ED mezi kovov\u00FDm klastrem a oxidick\u00FDm nosi\u010Dem; d) efektu, naz\u00FDvan\u00E9ho spillover (kdy\u017E jednotliv\u00E9 kroky reakce mohou prob\u011Bhnout postupn\u011B na kovov\u00E9m a pak na oxidick\u00E9m povrchu resp. obr\u00E1cen\u011B). K pochopen\u00ED molekul\u00E1rn\u00EDho mechanismu katalytick\u00FDch proces\u016F je pak nutno ur\u010Dit \u00FAlohu jednotliv\u00FDch v\u00FD\u0161e uveden\u00FDch faktor\u016F v celkov\u00E9m procesu selektivn\u00ED aktivace molekul reaktant\u016F. V r\u00E1mci tohoto projektu jsou proporce mezi uplatn\u011Bn\u00EDm faktor\u016F sub a) a b) racion\u00E1ln\u011B ovliv\u0148ov\u00E1ny r\u016Fzn\u00FDmi" . "http://www.isvav.cz/projectDetail.do?rowId=GA202/02/0618"^^ . "Neuvedeno."@en . "14"^^ .