Platinum nanoparticle shape effects on benzene hydrogenation selectivity.

Platinum nanoparticle shape effects on benzene hydrogenation selectivity. Research Abstract Details 

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Platinum nanoparticle shape effects on benzene hydrogenation selectivity. Abstract Text:

Kaitlin M Bratlie,Hyunjoo Lee,Kyriakos Komvopoulos,Peidong Yang,Gabor A Somorjai,Kaitlin M Bratlie,Hyunjoo Lee,Kyriakos Komvopoulos,Peidong Yang,Gabor A Somorjai,

Benzene hydrogenation was investigated in the presence of a surface monolayer consisting of Pt nanoparticles of different shapes (cubic and cuboctahedral) and tetradecyltrimethylammonium bromide (TTAB). Infrared spectroscopy indicated that TTAB binds to the Pt surface through a weak C-H...Pt bond of the alkyl chain. The catalytic selectivity was found to be strongly affected by the nanoparticle shape. Both cyclohexane and cyclohexene product molecules were formed on cuboctahedral nanoparticles, whereas only cyclohexane was produced on cubic nanoparticles. These results are the same as the product selectivities obtained on Pt(111) and Pt(100) single crystals in earlier studies. The apparent activation energy for cyclohexane production on cubic nanoparticles is 10.9 +/- 0.4 kcal/mol, while for cuboctahedral nanoparticles, the apparent activation energies for cyclohexane and cyclohexene production are 8.3 +/- 0.2 and 12.2 +/- 0.4 kcal/mol, respectively. These activation energies are lower, and corresponding turnover rates are three times higher than those obtained with single-crystal Pt surfaces.

Platinum nanoparticle shape effects on benzene hydrogenation selectivity. Publishing Authors By Initials

KM Bratlie,H Lee,K Komvopoulos,P Yang,GA Somorjai,KM Bratlie,H Lee,K Komvopoulos,P Yang,GA Somorjai,

For similar environment and public health: environment: environment, controlled: temperature research abstracts see: environment and public health: environment: environment, controlled: temperature research

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Platinum nanoparticle shape effects on benzene hydrogenation selectivity. Journal Published:

PUBLICATION TYPE: Research Support, U.S. Gov't,

Journal: Nano letters

VOLUME: 7

Page Numbers: 3097-101

Journal Abbreviation: Nano Lett.

ISSN: 1530-6984

DAY: 18

MONTH: 09

YEAR: 2007

Platinum nanoparticle shape effects on benzene hydrogenation selectivity. Information

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LANGUAGE: eng

NlmUniqueID: 101088070

Platinum nanoparticle shape effects on benzene hydrogenation selectivity. Keywords Mesh Terms:

KEYWORDS: Temperature

MESH TERMS: chemistry

Chemical & Substance for Abstract: Platinum nanoparticle shape effects on benzene hydrogenation selectivity. Information

Substance Name: Platinum

Registry Number: 7440-06-4

Grant and Affiliation Information for Platinum nanoparticle shape effects on benzene hydrogenation selectivity.

AFFILIATION: Department of Chemistry, University of California, Berkeley, California 94720, USA.

Country: United States

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MEDLINETA: Nano Lett

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