"The used of palladium nanoparticles supported on MCM-41 mesoporous molecular sieves in Heck reaction: A comparison of basic and neutral supports" . "[9B7DFB2A02FC]" . "Demel, Jan" . . . . "Bifunk\u010Dn\u00ED katalyz\u00E1tory byly p\u0159ipraveny nanesen\u00EDm chemicky redukovan\u00FDch palladiov\u00FDch nano\u010D\u00E1stic na bazick\u00E9 nosi\u010De na b\u00E1zi MCM-41. Tyto nosi\u010De byly p\u0159ipraveny iontovou v\u00FDm\u011Bnou hlin\u00EDkem dopovan\u00FDch mesopor\u00E9zn\u00EDch molekulov\u00FDch s\u00EDt MCM-41 cesn\u00FDmi a draseln\u00FDmi ionty. Tato s\u00EDta byla dopov\u00E1na hlin\u00EDkem b\u011Bhem synt\u00E9zy i po synt\u00E9ze ((Al)MCM-41, Al-grafted MCM-41). Pro porovn\u00E1n\u00ED byl p\u0159ipraven tak\u00E9 palladiem modifikovan\u00FD iontov\u011B vym\u011Bn\u011Bn\u00FD zeolit Y a nebazick\u00E9 molekulov\u00E9 s\u00EDto MCM-41. V\u0161echny p\u0159ipraven\u00E9 katalyz\u00E1tory byly testov\u00E1ny v Heckov\u011B reakci butylakryl\u00E1tu s brombenzenem, p\u0159i kter\u00E9 vznik\u00E1 butyl ester kyseliny sko\u0159icov\u00E9. Katalyz\u00E1tor Pd@ Cs+ (Al)MCM-41 a Pd@Cs+ Al-grafted MCM-41 m\u011Bly nejvy\u017E\u0161\u00ED konverzi, vyj\u00E1d\u0159eno pomoc\u00ED turn over number a turn over frequency, z analogick\u00FDch katalyz\u00E1tor\u016F d\u0159\u00EDve publikovan\u00FDch. Ov\u0161em nejaktivn\u011Bj\u0161\u00ED syst\u00E9m byl dosa\u017Een kombinac\u00ED nebazick\u00E9ho katalyz\u00E1toru s b\u00E1z\u00ED octanem sodn\u00FDm s v\u00FDt\u011B\u017Ekem 33 % po 20 hodin\u00E1ch p\u0159i 160 oC v N,N-dimethylacetamidu a p\u0159\u00EDtomnosti 1 mol.% palladia."@cs . "127;132" . . "RIV/61388955:_____/07:00083517!RIV08-MSM-61388955" . . "NL - Nizozemsko" . "Bifunctional supported catalysts were prepared by grafting of chemically reduced palladium nanoparticles onto basic MCM-41 type solid supports. The supports were obtained by ion-exchange with Cs+ or K+ ions from both in-synthesis and post-synthesis Al-doped mesoporous molecular sieves MCM-41 (i.e. (Al)MCM-41 and Al-grafted MCM-41). For a comparison, Pd@Cs+-exchanged zeolite Y and the non-basic Pd@MCM-41 catalyst were also prepared. All supported catalysts were tested in Heck reaction of butyl acrylate and bromobenzene to give n-butyl cinnamate. Catalysts Pd@Cs+-(Al)MCM-41 and Pd@Cs+-Al-grafted MCM-41 proved to be superior to the analogous catalysts reported in the literature in terms of turnover number and turnover frequency. Most active, however, were catalytic systems obtained from combination of the simple, non-basic Pd@MCM-41 with an external base, which gave the coupling product in 33% after 20 h at 160oC in N,N-dimethylacetamide in the presence of sodium acetate ..."@en . "Pou\u017Eit\u00ED palladiov\u00FDch nano\u010D\u00E1stic nanesen\u00FDch na mesopor\u00E9zn\u00EDm molekulov\u00E9m s\u00EDt\u011B MCM-41 v Heckov\u011B reakci: porovn\u00E1n\u00ED bazick\u00FDch a neutr\u00E1ln\u00EDch nosi\u010D\u016F"@cs . "6"^^ . . . . . "Bifunctional supported catalysts were prepared by grafting of chemically reduced palladium nanoparticles onto basic MCM-41 type solid supports. The supports were obtained by ion-exchange with Cs+ or K+ ions from both in-synthesis and post-synthesis Al-doped mesoporous molecular sieves MCM-41 (i.e. (Al)MCM-41 and Al-grafted MCM-41). For a comparison, Pd@Cs+-exchanged zeolite Y and the non-basic Pd@MCM-41 catalyst were also prepared. All supported catalysts were tested in Heck reaction of butyl acrylate and bromobenzene to give n-butyl cinnamate. Catalysts Pd@Cs+-(Al)MCM-41 and Pd@Cs+-Al-grafted MCM-41 proved to be superior to the analogous catalysts reported in the literature in terms of turnover number and turnover frequency. Most active, however, were catalytic systems obtained from combination of the simple, non-basic Pd@MCM-41 with an external base, which gave the coupling product in 33% after 20 h at 160oC in N,N-dimethylacetamide in the presence of sodium acetate ..." . "RIV/61388955:_____/07:00083517" . "Pou\u017Eit\u00ED palladiov\u00FDch nano\u010D\u00E1stic nanesen\u00FDch na mesopor\u00E9zn\u00EDm molekulov\u00E9m s\u00EDt\u011B MCM-41 v Heckov\u011B reakci: porovn\u00E1n\u00ED bazick\u00FDch a neutr\u00E1ln\u00EDch nosi\u010D\u016F"@cs . . "1-2" . . "3"^^ . . "456988" . . "2"^^ . "1381-1169" . "274" . . . "The used of palladium nanoparticles supported on MCM-41 mesoporous molecular sieves in Heck reaction: A comparison of basic and neutral supports"@en . "The used of palladium nanoparticles supported on MCM-41 mesoporous molecular sieves in Heck reaction: A comparison of basic and neutral supports"@en . "P(GA104/05/0192), P(LC06070), Z(AV0Z40400503)" . "\u010Cejka, Ji\u0159\u00ED" . "\u0160t\u011Bpni\u010Dka, P." . . "bifunctional catalysts; supported catalysts; palladium; nanoparticles; MCM-41"@en . . . . . "Journal of Molecular Catalysis A-Chemical" . "The used of palladium nanoparticles supported on MCM-41 mesoporous molecular sieves in Heck reaction: A comparison of basic and neutral supports" . .