Tricarbonyls of low-coordinated Au(0) atoms in zeolite-supported gold nanoparticles: Evidence from infrared and X-ray absorption spectroscopies

被引：7

作者：

Anderson, BG

Fierro-Gonzalez, JC

Ramesh, K

Vinod, CP

Niemantsverdriet, JW

Gates, BC ^{[1
]}

机构：

[1] Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA

[2] Eindhoven Univ Technol, Schuit Inst Catalysis, NL-5600 MB Eindhoven, Netherlands

来源：

LANGMUIR | 2006年 / 22卷 / 09期

关键词：

D O I：

10.1021/la0526535

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Mononuclear gold complexes in zeolite NaY were synthesized from initially physisorbed Au(CH3)(2)(C5H7O2) and characterized by X-ray absorption and infrared spectra recorded as the samples were exposed to flowing CO. X-ray absorption spectra demonstrate the formation of zero-valent gold nanoparticles during the CO treatment. Three new nu(CO) bands grew in during this treatment, at 2070, 2033, and 2000 cm(-1), characteristic of carbonyls of Au-0. Because the relative intensities of these bands decreased monotonically when the flow of CO was replaced by flowing He, it is inferred that they correspond to a single Au (CO)(3) species, on low-coordinated Au atoms. This is the first example of an Au-0 (CO)(3) species.

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收藏

页码：4310 / 4314

页数：5

相关论文

共 36 条

[21] CHLOROSILYL DERIVATIVES OF TRANSITION METALS AND EVIDENCE FOR A CONFORMATIONAL EFFECT ON METAL CARBONYL STRETCHING BANDS [J].

JETZ, W ;

GRAHAM, WAG .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1967, 89 (11) :2773-&

[22] Reactions of gold atoms and small clusters with CO:: infrared spectroscopic and theoretical characterization of AunCO (n=1-5) and Aun(CO)2 (n=1, 2) in solid argon [J].

Jiang, L ;

Xu, Q .

JOURNAL OF PHYSICAL CHEMISTRY A, 2005, 109 (06) :1026-1032

[23] EVIDENCE FOR REVERSIBLE FORMATION OF RHODIUM TRICARBONYL SPECIES IN SURFACE SUPPORTED RHODIUM CATALYSTS [J].

KEYES, MP ;

WATTERS, KL .

JOURNAL OF CATALYSIS, 1986, 100 (02) :477-481

[24] Supported Au catalysts for low temperature CO oxidation [J].

Kung, HH ;

Kung, MC ;

Costello, CK .

JOURNAL OF CATALYSIS, 2003, 216 (1-2) :425-432

[25] Reactions of laser-ablated Ag and Au atoms with carbon monoxide:: Matrix infrared spectra and density functional calculations on Ag(CO)n (n = 2, 3), Au(CO)n (n = 1, 2) and M(CO)n+ (n = 1-4; M = Ag, Au) [J].

Liang, BY ;

Andrews, L .

JOURNAL OF PHYSICAL CHEMISTRY A, 2000, 104 (40) :9156-9164

[26] Catalytic CO oxidation by a gold nanoparticle: A density functional study [J].

Lopez, N ;

Norskov, JK .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2002, 124 (38) :11262-11263

[27] SPECTROGRAPHIC STUDY AND DETERMINATION OF FORCE CONSTANTS IN NI(CO)(4-N)(PF3)N, NI(CO)(4-N)(POCH3)N AND NI(CO)(4-N)(PCH3)N COMPLEXES .2. FREQUENCY OF FUNDAMENTAL VIBRATIONS [J].

LOUTELLIER, A ;

BIGORGNE, M .

JOURNAL DE CHIMIE PHYSIQUE ET DE PHYSICO-CHIMIE BIOLOGIQUE, 1970, 67 (01) :99-+

[28] Supported gold catalysts for CO oxidation: Effect of calcination on structure, adsorption and catalytic behaviour [J].

Maciejewski, M ;

Fabrizioli, P ;

Grunwaldt, JD ;

Beckert, OS ;

Baiker, A .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2001, 3 (17) :3846-3855

[29] SYNTHESIS OF BINARY GOLD CARBONYLS, AU(CO)N (N = 1 OR 2) - SPECTROSCOPIC EVIDENCE FOR ISOCARBONYL(CARBONYL)GOLD, A LINKAGE ISOMER OF BIS(CARBONYL)GOLD [J].

MCINTOSH, D ;

OZIN, GA .

INORGANIC CHEMISTRY, 1977, 16 (01) :51-59

[30] THE FORMATION OF A WELL DEFINED RHODIUM DICARBONYL IN HIGHLY DEALUMINATED RHODIUM-EXCHANGED ZEOLITE-Y BY INTERACTION WITH CO [J].

MIESSNER, H ;

BURKHARDT, I ;

GUTSCHICK, D ;

ZECCHINA, A ;

MORTERRA, C ;

SPOTO, G .

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS I, 1989, 85 :2113-2126

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