Discrete Polyoxopalladates as Molecular Precursors for Supported Palladium Metal Nanoparticles as Hydrogenation Catalysts
AuthorsAyass, Wassim W.
Miñambres, Juan F.
KAUST DepartmentAdvanced Membranes and Porous Materials Research Center
Permanent link to this recordhttp://hdl.handle.net/10754/653022
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AbstractWe have used discrete polyoxopalladates(II) (POPs) of the MPd12X8 nanocube- and Pd15X10 nanostar-types (M = central metal ion, X = capping group) as molecular precursors (diameter ca. 1 nm) for the formation of supported (SBA-15) metallic nanoparticles. These materials proved to be highly active in the hydrogenation of o-xylene. The characterization of such hydrogenation catalysts revealed that the average size of the resulting alloy particles is quite uniform with diameters ranging from 1 to 3 nm (indicating little to no agglomeration). The central transition-metal ion Mn+ (MnII, FeIII, CoII, NiII, CuII, ZnII, PdII) in the POP structure and also the nature of the capping group (AsO43–, SeO32–, PO43–, phenyl-AsO32–) influence the resulting catalytic performance.
CitationAyass WW, Miñambres JF, Yang P, Ma T, Lin Z, et al. (2019) Discrete Polyoxopalladates as Molecular Precursors for Supported Palladium Metal Nanoparticles as Hydrogenation Catalysts. Inorganic Chemistry 58: 5576–5582. Available: http://dx.doi.org/10.1021/acs.inorgchem.8b03513.
SponsorsU.K. acknowledges support by ExxonMobil and Jacobs University. W.W.A. thanks Deutscher Akademischer Austauschdienst (DAAD) for a doctoral fellowship, and P.Y. acknowledges CSC for a doctoral fellowship. We also thank Talha Nisar, Jonas Köhling, and Prof. Veit Wagner (all Jacobs University) for using a furnace, allowing heating under N2. We also acknowledge Lana Yassine for designing the TOC graphic. Figure 1 was generated using Diamond version 3.2 software (copyright, Crystal Impact GbR).
PublisherAmerican Chemical Society (ACS)