"2007-12-31+01:00"^^ . " electron spectroscopy" . "Element\u00E1rn\u00ED povrchov\u00E9 procesy, kter\u00E9 prob\u00EDhaj\u00ED na modelov\u00FDch i re\u00E1ln\u00FDch katalyz\u00E1torech, byly studov\u00E1ny pomoc\u00ED \u0159ady komplement\u00E1rn\u00EDch povrchov\u00FDch metod. Jednalo se zejm\u00E9na o vliv siln\u00E9 interakce kov - podlo\u017Eka na adsorpci a oxidaci CO, na redukci oxidick\u00E9h"@cs . . "2005-01-01+01:00"^^ . . . . . . . "2008-12-16+01:00"^^ . "Reaktivita bimetalick\u00FDch nanostruktur na b\u00E1zi s,p- a p\u0159echodov\u00FDch kov\u016F" . "Surface sensitive techniques were used to study elementary surface processes taking place on model and real catalysts. In particular we have focused on strong metal-support interaction resulting in reduction of oxidic support (SnO2, TiO2, CeO2) and forma"@en . "11"^^ . . "11"^^ . "http://www.isvav.cz/projectDetail.do?rowId=GA202/05/0244"^^ . " alloys" . "GA202/05/0244" . . "2007-05-02+02:00"^^ . . . "0"^^ . " catalysis" . . "Projekt bude zam\u011B\u0159en na oblast studia bimetalick\u00FDch interakc\u00ED, kter\u00E9 maj\u00ED velk\u00FD fundament\u00E1ln\u00ED a technologick\u00FD v\u00FDznam pro heterogenn\u00ED katal\u00FDzu - interakci p\u0159echodov\u00FDch kov\u016F s kovy, kter\u00E9 maj\u00ED elektronovou konfiguraci typu s,p- a jejich\u017E oxidy se vyu\u017E\u00EDvaj\u00EDjako nosi\u010De aktivn\u00ED f\u00E1ze. V r\u00E1mci projektu budou vyu\u017E\u00EDv\u00E1ny komplement\u00E1rn\u00ED metody povrchov\u00E9 anal\u00FDzy. Hlavn\u00EDm c\u00EDlem bude porovn\u00E1n\u00ED mechanizm\u016F proces\u016F prob\u00EDhaj\u00EDc\u00EDch na modelov\u00FDch a re\u00E1ln\u00FDch katalyz\u00E1torech. Modelov\u00E9 katalyz\u00E1tory s dob\u0159e definovanou atom\u00E1rn\u00ED strukturou povrchu budou p\u0159ipravov\u00E1ny metodou heteroepitaxn\u00EDho r\u016Fstu velmi tenk\u00FDch kovov\u00FDch vrstev na kovov\u00FDch substr\u00E1tech. Nanostrukturovan\u00E9 bimetalick\u00E9 klastry maj\u00EDc\u00ED slitinov\u00FD charakter, nebo strukturu tvo\u0159enou j\u00E1drem z jednoho kovu a obalem z druh\u00E9ho, nap\u0159. Pd-Sn, Ti-Au, Ni-Sn budou deponov\u00E1ny na povrchy oxid\u016F metodami molekul\u00E1rn\u00ED epitaxe, impregnace a magnetronov\u00E9ho napra\u0161ov\u00E1n\u00ED. Oxidace CO bude pou\u017Eita jako testovac\u00ED reakce s c\u00EDlem naj\u00EDt souvislosti mezi velikost\u00ED \u010D\u00E1stic, tvarem," . "1"^^ . "1"^^ . . . . "Reactivity of s,p-/d- bimetallic nanostructures"@en . . "nanostructures" . "nanostructures; alloys; catalysis; electron spectroscopy; ion spectroscopy"@en . . "The project will be targeted to the specific field of bimetallic interactions with large fundamental and technological importance - interaction of transition metals with metals having s,p- metal electronic configuration, often used in oxide form as support. The project will create an advanced platform of knowledge and associated analytical and evaluation %22tools%22 based on an extensive use of complementary surface sensitive techniques. The main goal will be to bridge the gap between model and real catalysts. Catalytically active atomically structured heteroepitaxial metal-metal systems prepared by growing ultra-thin films on metallic substrates will be prepared and the chemical reactivity of such systems will be tested. Nanosized bimetallic clusters with alloy and/or core-shell structure, e.g. Pd-Sn, Ti-Au, Ni-Sn, will be deposited on oxide surfaces. CO oxidation will be used as a probe reaction in order to find links between particle size, morphology, electronic structure and their"@en . . .