Identification of active sites in CO oxidation over a Pd/Al2O3 catalyst

DOI IR IR (HANDLE) Web Site 6 Citations 49 References Open Access

Bibliographic Information

Other Title
  • Identification of active sites in CO oxidation over a Pd/Al<sub>2</sub>O<sub>3</sub> catalyst

Search this article

Description

The active sites of Pd/Al2O3 catalysts for CO oxidations were identified by investigating the dependence of CO oxidation activities on the surface structure and morphology of Pd nanoparticles. The maximum catalytic activity was obtained for Pd particles approximately 2 nm in particle size. We performed structural analyses on the Pd surface through infrared (IR) spectroscopy of the adsorbed CO molecules. A positive correlation was obtained between catalytic activity and the fraction of linear CO adsorbed on Pd corner sites and Pd(111) facets, indicating that these sites are highly active for CO oxidation. X-ray absorption fine structure (XAFS) and spherical aberration-corrected scanning transmission electron microscopy (Cs-STEM) measurements demonstrated that Pd nanoparticles less than 2 nm in particle size with amorphous-like structures and Pd particles with large, well-ordered structures favor the formation of a high fraction of corner sites and Pd(111) facets, respectively.

Journal

Citations (6)*help

See more

References(49)*help

See more

Related Projects

See more

Keywords

Details 詳細情報について

Report a problem

Back to top