"Demel, Jan" . "\u0160t\u011Bpni\u010Dka, P." . "The use of palladium nanoparticles supported with MCM-41 and basic (Al)MCM-41 mesoporous sieves in microwave-assisted Heck reaction" . "P(GA104/05/0192), P(LC06070), Z(AV0Z40400503), Z(MSM0021620857)" . "Catalysis Today" . "401778" . "A series of supported catalysts has been obtained by grafting of chemically generated palladium nanoparticles onto basic, Cs+ ion-exchanged molecular sieves (Al)MCM-41 and onto the non-basic, parent material MCM-41. Catalytic activity of the catalysts has been investigated in the Heck reaction between bromobenzene and butyl acrylate under microwave irradiation. The activity of the bifunctional catalysts (Pd@Cs+-(Al)MCM-41) and the activity of Pd@MCM-41 combined with sodium acetate as an external base were considerably higher under microwave irradiation than activities observed for the same catalytic systems under the conventional heating. The Pd@MCM-41/NaOAc system showed higher conversions than the bifunctional catalysts presumably due to a different nature and accessible amount of the base. On the other hand, microwave irradiation seems to increase the rate of aggregation of the metallic particles and thus also catalyst deactivation as compared with the usual heating."@en . . "1-4" . . "Pou\u017Eit\u00ED palladiov\u00FDch nano\u010D\u00E1stic nanesen\u00FDch na mesopor\u00E9zn\u00ED s\u00EDto MCM-41 a bazick\u00E9 s\u00EDto (Al)MCM-41 v Heckov\u011B reakci p\u0159i mikrovlnn\u00E9m oh\u0159evu"@cs . "The use of palladium nanoparticles supported with MCM-41 and basic (Al)MCM-41 mesoporous sieves in microwave-assisted Heck reaction"@en . . . . "A series of supported catalysts has been obtained by grafting of chemically generated palladium nanoparticles onto basic, Cs+ ion-exchanged molecular sieves (Al)MCM-41 and onto the non-basic, parent material MCM-41. Catalytic activity of the catalysts has been investigated in the Heck reaction between bromobenzene and butyl acrylate under microwave irradiation. The activity of the bifunctional catalysts (Pd@Cs+-(Al)MCM-41) and the activity of Pd@MCM-41 combined with sodium acetate as an external base were considerably higher under microwave irradiation than activities observed for the same catalytic systems under the conventional heating. The Pd@MCM-41/NaOAc system showed higher conversions than the bifunctional catalysts presumably due to a different nature and accessible amount of the base. On the other hand, microwave irradiation seems to increase the rate of aggregation of the metallic particles and thus also catalyst deactivation as compared with the usual heating." . "\u010Cejka, Ji\u0159\u00ED" . . "RIV/61388955:_____/08:00309725" . . . . "000254516800010" . . "Park, S.-E." . "NL - Nizozemsko" . . . "132" . . "RIV/61388955:_____/08:00309725!RIV09-AV0-61388955" . . "Pou\u017Eit\u00ED palladiov\u00FDch nano\u010D\u00E1stic nanesen\u00FDch na mesopor\u00E9zn\u00ED s\u00EDto MCM-41 a bazick\u00E9 s\u00EDto (Al)MCM-41 v Heckov\u011B reakci p\u0159i mikrovlnn\u00E9m oh\u0159evu"@cs . . . "bifunctional catalysts; supported catalysts; palladium; nanoparticles"@en . . "2"^^ . . "[5186BC6B60E1]" . "4"^^ . "5"^^ . . "The use of palladium nanoparticles supported with MCM-41 and basic (Al)MCM-41 mesoporous sieves in microwave-assisted Heck reaction"@en . . "0920-5861" . "S\u00E9rie heterogenn\u00EDch katalyz\u00E1tor\u016F p\u0159ipraven\u00FDch zakotven\u00EDm chemicky redukovan\u00FDch palladiov\u00FDch nano\u010D\u00E1stic na bazick\u00E9 molekulov\u00E9 s\u00EDto \u2013 Cs+ iontov\u011B vym\u011Bn\u011Bn\u00E9 (Al)MCM-41 a nebazick\u00E9 s\u00EDto MCM-41. Byla zkoum\u00E1na katalytick\u00E1 aktivita p\u0159ipraven\u00FDch katalyz\u00E1tor\u016F v Heckov\u011B reakci brombenzenu s butyl-akryl\u00E1tem p\u0159i mikrovlnn\u00E9m oh\u0159evu. Aktivita bifunk\u010Dn\u00EDho katalyz\u00E1toru (Pd@Cs+-(Al)MCM-41) a aktivita Pd@MCM-41 s p\u0159id\u00E1n\u00EDm octanu sodn\u00E9ho jako b\u00E1ze byly v\u00FDrazn\u011B vy\u0161\u0161\u00ED p\u0159i pou\u017Eit\u00ED mikrovlnn\u00E9ho oh\u0159evu ne\u017E p\u0159i klasick\u00E9m hydroterm\u00E1ln\u00EDm. Syst\u00E9m Pd@MCM-41/NaOAc dos\u00E1hnul vy\u0161\u0161\u00EDch konverz\u00ED ne\u017E bifunk\u010Dn\u00ED katalyz\u00E1tor, pravd\u011Bpodobn\u011B d\u00EDky jin\u00E9mu druhu a mno\u017Estv\u00ED pou\u017Eit\u00E9 b\u00E1ze. Na druh\u00E9 stran\u011B mikrovlnn\u00FD oh\u0159ev zrychluje, oproti hydroterm\u00E1ln\u00EDmu oh\u0159evu,.aggregaci kovov\u00FDch \u010D\u00E1stic a t\u00EDm i deaktivaci katalyz\u00E1toru."@cs . "The use of palladium nanoparticles supported with MCM-41 and basic (Al)MCM-41 mesoporous sieves in microwave-assisted Heck reaction" . .