Highly selective catalytic oxidation reactions: I. Oxidative dehydrogenation of propane (ODHP) by size-selected platinum catalysts, and II: Oxidation of alkenes on size-selected silver and gold clusters and nanoparticles

Stefan Vajda, Gregory E. Ballentine, Stephanie Mucherie, Christopher L. Marshall, Jeffrey W. Elam, Michael J. Pellin, Byeongdu Lee, Chieh-Tsung Lo, Seifert Sönke, Randall Winans, Joseph M. Calo

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

Abstract

Main goal of this study is to achieve superb catalytic performance by using atomically monodisperse clusters dispersed on technologically relevant oxide supports - prerequisites to produce highly uniform active sites. I. ODHP. Pt8-10 clusters supported on alumina coated mesoporous anodized aluminum-oxide membranes with and without SnO promoter were studied. Only CO2 or CO2 +CO byproduct(s) were detected. Per Pt-atom activities 103-104 times higher than per V-atom activities of reference VOx catalysts were observed. Up to 95% propane conversion and maximum 85% selectivity towards propene at 400-550°C demonstrate the advantage of spatially localized metal loading. II. Oxidation of Alkenes. Oxidation of ethylene and propylene on Au7-10 and Ag15-19 clusters and ∼1nm size nanoparticles on alumina films were studied by unique combination of simultaneous mass spectrometry and grazing incidence small-angle X-ray scattering. Evolution of products and nanocatalysts' size&shape as a function of temperature & time during the catalytic reaction will be discussed.

Original languageEnglish
Title of host publication233rd ACS National Meeting, Abstracts of Scientific Papers
Publication statusPublished - 2007 Dec 28
Event233rd ACS National Meeting - Chicago, IL, United States
Duration: 2007 Mar 252007 Mar 29

Publication series

NameACS National Meeting Book of Abstracts
ISSN (Print)0065-7727

Other

Other233rd ACS National Meeting
CountryUnited States
CityChicago, IL
Period07-03-2507-03-29

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

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