Resolving the Atomic Structure of Vanadia Monolayer Catalysts: Monomers, Trimers, and Oligomers on Ceria

被引：148

作者：

Baron, Martin ^{[2
]}

Abbott, Heather ^{[2
]}

Bondarchuk, Oleksandr ^{[2
]}

Stacchiola, Dario ^{[2
]}

Uhl, Alexander ^{[2
]}

Shaikhutdinov, Shamil ^{[2
]}

Freund, Hans-Joachim ^{[2
]}

Popa, Cristina ^{[1
]}

Ganduglia-Pirovano, Maria Veronica ^{[1
]}

Sauer, Joachim ^{[1
]}

机构：

[1] Humboldt Univ, Dept Chem, D-10009 Berlin, Germany

[2] Max Planck Gesell, Fritz Haber Inst, Dept Chem Phys, D-14195 Berlin, Germany

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2009年 / 48卷 / 43期

关键词：

density functional calculations; nanoparticles; structure elucidation; surface chemistry; thin films; METAL-OXIDE CATALYSTS; RAMAN-SPECTROSCOPY; THIN-FILMS; OXIDATIVE DEHYDROGENATION; ELECTRONIC-STRUCTURE; MODEL SYSTEMS; CEO2(111); SUPPORT; SILICA; REACTIVITY;

D O I：

10.1002/anie.200903085

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

On top of old ceria: Vanadyl-terminated monomers, trimers (see picture), and oligomers form on a CeO2(111) surface, and their atomic structure is resolved using a combination of high-level experimental and theoretical results. Ceria surfaces stabilize vanadia species in a +5 oxidation state, which wet and chemically reduce the ceria surface and probably play a crucial role in the reactivity of ceria-supported vanadia in oxidation reactions. © 2009 Wiley-VCH Verlag.

引用

页码：8006 / 8009

页数：4

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