Platinum nanoparticle encapsulation during hydrothermal growth of mesoporous oxides: Synthesis, characterization and catalytic properties

Robert M. Rioux, Hyunjoon Song, James D. Hoefelmeyer, Krisztian Niesz, Michael Grass, Peidong Yang, G. A. Somorjai

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A synthetic method for the design of heterogeneous catalysts incorporating monodisperse platinum nanoparticles into ordered mesoporous oxide frameworks has been developed. Nanoparticles were synthesized in solution in the presence of surface templating polymer and encapsulated into mesoporous oxide matrices. After polymer removal by calcination, ethylenc hydrogeation rates were consistent with previously reported results, while superior activity of low coordination atoms in small crystallites during ethane hydrogenolysis was demonstrated. Changes in reaction selectivity with particle size during the hydrogenation/dehydrogenation of cyclohexene were attributed to a hydrogen coverage effect influencing the hydrogenation pathway and the apparent structure sensitivity of the dehydrogenation pathway.

Original languageEnglish (US)
Title of host publicationNanoparticles and Nanostructures in Sensors and Catalysis
PublisherMaterials Research Society
Pages105-111
Number of pages7
ISBN (Print)1558998543, 9781558998544
DOIs
StatePublished - 2005
Event2005 MRS Fall Meeting - Boston, MA, United States
Duration: Nov 28 2005Dec 2 2005

Publication series

NameMaterials Research Society Symposium Proceedings
Volume900
ISSN (Print)0272-9172

Other

Other2005 MRS Fall Meeting
CountryUnited States
CityBoston, MA
Period11/28/0512/2/05

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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