Highly Dispersed Pd Species Active in the Suzuki-Miyaura Reaction

被引：22

作者：

Okumura, Kazu ^{[1
]}

Matsui, Hirosuke ^{[1
]}

Tomiyama, Takuya ^{[1
]}

Sanada, Takashi ^{[1
]}

Honma, Tetsuo ^{[2
]}

Hirayama, Sayaka ^{[2
]}

Niwa, Miki ^{[1
]}

机构：

[1] Tottori Univ, Grad Sch Engn, Dept Chem & Biotechnol, Minami Ku, Tottori, Japan

[2] Japan Synchroton Radiat Res Inst SPring 8, Sayo, Hyogo 6795198, Japan

来源：

CHEMPHYSCHEM | 2009年 / 10卷 / 18期

基金：

日本学术振兴会;

关键词：

EXAFS spectroscopy; palladium; Suzuki-Miyaura reaction; X-ray absorption spectroscopy; zeolites; CROSS-COUPLING REACTIONS; N-HETEROCYCLIC CARBENES; PALLADIUM NANOPARTICLES; METAL NANOPARTICLES; ARYL CHLORIDES; HECK REACTION; USY ZEOLITE; CATALYSTS; ADSORPTION; COMPLEXES;

D O I：

10.1002/cphc.200900711

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Structures of Pd/zeolites immersed in solvents were measured by in situ X-ray absorption fine structure (XAFS). Systematic studies revealed that the selection of an appropriate support (USY-zeolite), thermal treatment temperature of USY, solvent (o-xylene), H-2 partial pressure (6%), and the use of a Pd amine complex affect the structure of Pd. As a result, we found that monomeric Pd can be obtained in the USY support with H-2 bubbling in o-xylene. The structural properties of Pd correlate well with its catalytic performance in the Suzuki-Miyaura coupling reactions; a very high TON of up to 11000 000 was obtained over the monomeric Pd.

引用

页码：3265 / 3272

页数：8

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