Structure of catalytically active sites in supported metal catalysts

被引：0

作者：

van Bokhoven, Jeroen A. ^{[1
]}

Bus, Eveline ^{[1
]}

Ramaker, Dave E. ^{[2
]}

机构：

[1] ETH, Inst Chem & Bioengn, Zurich, Switzerland

[2] George Washington Univ, Washington, DC USA

来源：

X-RAY ABSORPTION FINE STRUCTURE-XAFS13 | 2007年 / 882卷

关键词：

supported metal catalysis; XAS; in-situ XAS; adsorption site; structure performance relationship;

D O I：

暂无

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The adsorption site and the mode of ethylene bonding on Pt/Al2O3 catalysts have been determined. Theoretically obtained signatures using FEFF8 showed that the possible bonding modes of ethylene can be distinguished, which is experimentally shown for the room temperature adsorption of ethylene. This study shows that it is feasible to determine the structures of the adsorption sites and the modes of bonding of hydrocarbon molecules on the surfaces of supported metal catalysts.

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页码：702 / +

页数：2

相关论文

共 8 条

[1] Comment on "Effect of hydrogen adsorption on the x-ray absorption spectra of small Pt clusters" - Reply [J].

Ankudinov, AL ;

Rehr, JJ ;

Low, JJ ;

Bare, SR .

PHYSICAL REVIEW LETTERS, 2002, 89 (13)

[2] Real-space multiple-scattering calculation and interpretation of x-ray-absorption near-edge structure [J].

Ankudinov, AL ;

Ravel, B ;

Rehr, JJ ;

Conradson, SD .

PHYSICAL REVIEW B, 1998, 58 (12) :7565-7576

[3]

BUS E, UNPUB

[4] Bridge-bonded atomic oxygen on Pt(110) [J].

Janin, E ;

von Schenck, H ;

Göthelid, M ;

Karlsson, UO ;

Svensson, M .

PHYSICAL REVIEW B, 2000, 61 (19) :13144-13149

[5] Three-site model for hydrogen adsorption on supported platinum particles: Influence of support ionicity and particle size on the hydrogen coverage [J].

Oudenhuijzen, MK ;

van Bokhoven, JA ;

Miller, JT ;

Ramaker, DE ;

Koningsberger, DC .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2005, 127 (05) :1530-1540

[6] Comment on "Effect of hydrogen adsorption on the x-ray absorption spectra of small Pt clusters" [J].

Ramaker, DE ;

Koningsberger, DC .

PHYSICAL REVIEW LETTERS, 2002, 89 (13)

[7] Determination of O[H] and CO coverage and adsorption sites on PtRu electrodes in an operating PEM fuel cell [J].

Roth, C ;

Benker, N ;

Buhrmester, T ;

Mazurek, M ;

Loster, M ;

Fuess, H ;

Koningsberger, DC ;

Ramaker, DE .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2005, 127 (42) :14607-14615

[8] Active sites and states in the heterogeneous catalysis of carbon-hydrogen bonds [J].

Somorjai, GA ;

Marsh, AL .

PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 2005, 363 (1829) :879-900