Oxidative decomposition of methanol on subnanometer palladium clusters

The effect of catalyst size and support composition

Sungsik Lee, Byeongdu Lee, Faisal Mehmood, Sönke Seifert, Joseph A. Libera, Jeffrey W. Elam, Jeffrey Greeley, Peter Zapol, Larry A. Curtiss, Michael J. Pellin, Peter C Stair, Randall E. Winans, Stefan Vajda

Research output: Contribution to journalArticle

55 Citations (Scopus)

Abstract

Size and support effects in the oxidative decomposition of methanol on amorphous alumina supported subnanometer palladium clusters were studied under realistic reaction conditions of pressure and temperature. The smaller Pd 8-12 clusters were found to promote the decomposition channel to CO and hydrogen, however with mediocre activity due to poisoning. The larger Pd15-18 clusters preferentially produce dimethyl ether and formaldehyde, without signs of posioning. A thin titania overcoat applied on the Pd15-18 improves the sintering-resistance of the catalyst. Accompanying density functional calculations confirm the posioning of small Pd clusters by CO.

Original languageEnglish
Pages (from-to)10342-10348
Number of pages7
JournalJournal of Physical Chemistry C
Volume114
Issue number23
DOIs
Publication statusPublished - Jun 17 2010

Fingerprint

Palladium
Carbon Monoxide
Catalyst supports
Methanol
palladium
methyl alcohol
Decomposition
decomposition
catalysts
Catalysts
Aluminum Oxide
Chemical analysis
Formaldehyde
Density functional theory
Hydrogen
Ethers
Alumina
Sintering
Titanium
poisoning

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Electronic, Optical and Magnetic Materials
  • Surfaces, Coatings and Films
  • Energy(all)

Cite this

Oxidative decomposition of methanol on subnanometer palladium clusters : The effect of catalyst size and support composition. / Lee, Sungsik; Lee, Byeongdu; Mehmood, Faisal; Seifert, Sönke; Libera, Joseph A.; Elam, Jeffrey W.; Greeley, Jeffrey; Zapol, Peter; Curtiss, Larry A.; Pellin, Michael J.; Stair, Peter C; Winans, Randall E.; Vajda, Stefan.

In: Journal of Physical Chemistry C, Vol. 114, No. 23, 17.06.2010, p. 10342-10348.

Research output: Contribution to journalArticle

Lee, S, Lee, B, Mehmood, F, Seifert, S, Libera, JA, Elam, JW, Greeley, J, Zapol, P, Curtiss, LA, Pellin, MJ, Stair, PC, Winans, RE & Vajda, S 2010, 'Oxidative decomposition of methanol on subnanometer palladium clusters: The effect of catalyst size and support composition', Journal of Physical Chemistry C, vol. 114, no. 23, pp. 10342-10348. https://doi.org/10.1021/jp912220w
Lee, Sungsik ; Lee, Byeongdu ; Mehmood, Faisal ; Seifert, Sönke ; Libera, Joseph A. ; Elam, Jeffrey W. ; Greeley, Jeffrey ; Zapol, Peter ; Curtiss, Larry A. ; Pellin, Michael J. ; Stair, Peter C ; Winans, Randall E. ; Vajda, Stefan. / Oxidative decomposition of methanol on subnanometer palladium clusters : The effect of catalyst size and support composition. In: Journal of Physical Chemistry C. 2010 ; Vol. 114, No. 23. pp. 10342-10348.
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