Γ-point density functional calculations on the adsorption of rhodium and palladium particles on MgO(001) surface and their reactivity

Andräs Stirling, Isao Gunji, Akira Endou, Yasunori Oumi, Momoji Kubo, Akira Miyamoto

研究成果: Article査読

27 被引用数 (Scopus)

抄録

We have performed periodic density functional calculations on the adsorption of transition-metal atoms (Rh and Pd) on MgO(001) support. The chemical properties of the supported metal atoms were examined by calculating the adsorption of NO and NO2 on the metal atoms. Sampling only the k=0 wavevector point in the Brillouin zone we NO solved the one-particle 2 Schrödinger equations within the KohnÉSham framework, employing a unit cell which contained 16 surface atoms and the adsorbate particles. We have found that the interaction between the support surface and the adsorbing metal atom is stronger for Rh than Pd by 1 eV using non-local density approximation. The diference is explained by considering the endothermic reorganizations in the metal electronic structures due to the adsorption. The NO adsorption demonstrated the cationic nature of the adsorbed metal particles and showed that supported Rh atoms can form stronger bond with NO than supported Pd atoms. The NO adsorption also showed stronger RhÉN interactions and the asymmetric orientation of NO2 suggested weak additional interaction between the ligand and the support surface.

本文言語English
ページ(範囲)1175-1178
ページ数4
ジャーナルJournal of the Chemical Society - Faraday Transactions
93
6
DOI
出版ステータスPublished - 1997 1 1

ASJC Scopus subject areas

  • 物理化学および理論化学

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