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  Supported palladium nanoparticles on hybrid mesoporous silica: Structure/activity-relationship in the aerobic alcohol oxidation using supercritical carbon dioxide

Hou, Z., Theyssen, N., Brinkmann, A., Klementiev, K. V., Grünert, W., Bühl, M., et al. (2008). Supported palladium nanoparticles on hybrid mesoporous silica: Structure/activity-relationship in the aerobic alcohol oxidation using supercritical carbon dioxide. Journal of Catalysis, 258(2), 315-323. doi:10.1016/j.jcat.2008.07.002.

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 Creators:
Hou, Zhenshan1, Author              
Theyssen, Nils1, Author              
Brinkmann, Axel1, Author              
Klementiev, Konstantin V.2, 3, Author
Grünert, Wolfgang2, Author
Bühl, Michael4, Author              
Schmidt, Wolfgang5, Author              
Spliethoff, Bernd6, Author              
Tesche, Bernd6, Author              
Weidenthaler, Claudia5, Author              
Leitner, Walter7, 8, Author              
Affiliations:
1Service Department Theyssen (Technical Labs), Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445632              
2Lehrstuhl für Technische Chemie, Ruhr-Universität Bochum, Universitätsstr. 150, 44801 Bochum, Germany, ou_persistent22              
3Hasylab at DESY, D-22607 Hamburg, Germany, ou_persistent22              
4Research Department Thiel, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445590              
5Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445589              
6Service Department Tesche (EM), Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445631              
7Service Department Leitner (Technical Labs), Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445626              
8Institut für Technische und Makromolekulare Chemie, Lehrstuhl für Technische Chemie und Petrolchemie, RWTH Aachen, Worringerweg 1, D-52064 Aachen, Germany, ou_persistent22              

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Free keywords: Palladium; Nanoparticles; Supercritical carbon dioxide; Alcohol oxidation; Mesoporous support; Hybrid materials
 Abstract: The preparation, characterization, and catalytic properties of Pd nanoparticles supported on mesoporous organic–inorganic hybrid materials are described for continuous-flow aerobic oxidation of alcohols using supercritical carbon dioxide (scCO2) as a mobile phase. The nanoparticles were generated “bottom-up” from molecular precursors that were precoordinated to the support through suitable anchor units. The most active material allows high single-pass conversions in scCO2 at temperatures as low as 60 °C. This high activity may be associated with the presence of small primary crystallites (approx. 2 nm) that conglomerate to ensembles about 25 nm in size, leading to a larger number of high-indexed planes in small volume units. These findings may provide useful guidelines for further catalyst design on the nanoscale for green oxidation methods.

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Language(s): eng - English
 Dates: 2008-04-082008-07-252008-09-10
 Publication Status: Published in print
 Pages: 9
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1016/j.jcat.2008.07.002
 Degree: -

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Title: Journal of Catalysis
  Abbreviation : J. Catal.
Source Genre: Journal
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Publ. Info: Amsterdam : Elsevier
Pages: - Volume / Issue: 258 (2) Sequence Number: - Start / End Page: 315 - 323 Identifier: ISSN: 0021-9517
CoNE: https://pure.mpg.de/cone/journals/resource/954922645027