Evidence for Pdx(CO)y compound formation on an alumina substrate

Libuda, J.; Sandell, A.; Bäumer, A.; Freund, Hans-Joachim

doi:10.1016/0009-2614(95)00555-I

アイテム詳細

登録内容を編集ファイル形式で保存

一時保存へ追加

タグ情報を表示リリース履歴を表示詳細要約

公開

学術論文

Evidence for Pd_x(CO)_y compound formation on an alumina substrate

MPS-Authors

There are no MPG-Authors in the publication available

External Resource

There are no locators available

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

フルテキスト (公開)

公開されているフルテキストはありません

付随資料 (公開)

There is no public supplementary material available

引用

Libuda, J., Sandell, A., Bäumer, A., & Freund, H.-J. (1995). Evidence for Pd_x(CO)_y compound formation on an alumina substrate. Chemical Physics Letters, 240(5-6), 429-434. doi:10.1016/0009-2614(95)00555-I.

引用: https://hdl.handle.net/21.11116/0000-000E-44E0-8

要旨

Although stable binary Pd carbonyls are unknown in the gas phase, we found strong evidence for a stable carbonyl-like Pd compound on an oxide surface: by in situ vapour deposition of Pd at a rate of 2 x 10¹³ atoms s⁻¹ cm⁻² onto an alumina substrate (90 K) at a pressure of 2 x 10⁻⁶ mbar CO, a binary compound of Pd and CO is formed which is stable up to 190 K. As substrate serves a well-ordered aluminium oxide film grown on a NiAl(110) single crystal surface. The system was characterized under UHV (ultrahigh vacuum) conditions by means of TDS, LEED, UPS and XPS in a coverage range between 1.4 x 10¹⁴ Pd atoms cm⁻² and 1.4 x 10¹⁶ Pd atoms cm⁻². The decomposition at 190 K results in the formation of metallic Pd particles and is accompanied by a sharp and dominant feature in the thermal desorption spectra.