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Cross-linked Polyvinyl Polymers versur Polyureas as Designed Supports for Catalytically Active M0 Nanoclusters. Part III. Nanometer Scale Structure of the Cross-linked Polyurea Support EnCat 30 and of the PdII/EnCat 30 and Pd0/EnCat 30NP Catalysts
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SYSNO ASEP 0324730 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Cross-linked Polyvinyl Polymers versur Polyureas as Designed Supports for Catalytically Active M0 Nanoclusters. Part III. Nanometer Scale Structure of the Cross-linked Polyurea Support EnCat 30 and of the PdII/EnCat 30 and Pd0/EnCat 30NP Catalysts Title Porovnání zesítěných polyvinylových polymerů a polymočovin jako nosičů katalyticky aktivních kovových nanoklastrů, část III.:struktura zesítěných polymočovinového nosiče EnCat 30 a katalyzátorů PdII/EnCat 30 a Pd0/EnCat 30NP v měřítku nanometrů Author(s) Centomo, P. (IT)
Zecca, M. (IT)
Zoleo, A. (IT)
Maniero, A.L. (IT)
Canton, P. (IT)
Jeřábek, Karel (UCHP-M) RID, ORCID, SAI
Corain, B. (IT)Source Title Physical Chemistry Chemical Physics. - : Royal Society of Chemistry - ISSN 1463-9076
Roč. 11, - (2009), s. 4068-4076Number of pages 9 s. Language eng - English Country GB - United Kingdom Keywords palladium catalysts ; polyurea ; polymeric support Subject RIV CI - Industrial Chemistry, Chemical Engineering CEZ AV0Z40720504 - UCHP-M (2005-2011) UT WOS 000266065400031 DOI 10.1039/b819776h Annotation The cross-linked polyurea support EnCat 30, its related macromolecular complex PdII/EnCat 30 and its related Pd0/EnCat 30NP nanocomposite are thoroughly investigated with SEM, TEM, ISEC and ESR in the solid state (SEM and TEM) and swollen state in THF (ISEC and ESR). PdII/EnCat 30 and its related Pd0/EnCat 30NP are obtained by microencapsulation of palladium acetate in a polyurea framework, which is formed upon hydrolysis/condensation of mixtures of multi-functional oligo-arylisocyanates in dichloroethane. It is proposed that there is a strong nanostructural effect exerted by PdII species due to its interaction with functional groups during the growth of the cross-linked polymer framework. As a consequence, the catalytic species in both PdII/EnCat 30 and Pd0/EnCat 30NP are much more accessible to molecules diffusing from liquid phases in contact with the materials and, hence, are better catalysts than expected from the morphology of blank polyurea EnCat 30. Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2009
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