2011
DOI: 10.3390/catal2010001
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Gold/Iron Carbonyl Clusters for Tailored Au/FeOx Supported Catalysts

Abstract: A novel preparation method was developed for the preparation of gold/iron oxide supported catalysts using the bimetallic carbonyl cluster salts [NEt4]4[Au4Fe4(CO)16] and [NEt4][AuFe4(CO)16] as precursors of highly dispersed nanoparticles over different supports. A series of catalysts with different metal loadings were prepared and tested in the complete oxidation of dichlorobenzene, toluene, methanol and in the preferential oxidation of CO in the presence of H2 (PROX) as model reactions. The characterization b… Show more

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Cited by 19 publications
(13 citation statements)
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“…It has been pointed out that molecular metal nanoclusters might be interesting models for the investigation of metal aggregates at the nanolevel, as well as promising precursors for the preparation of metal nanoparticles and catalytic materials. Thus, it is quite remarkable that molecular nickel phosphide nanoclusters have not been reported up to now. This should be contrasted with the tendency of Ni to form several molecular carbonyl clusters containing other fully interstitial p-block elements, such as C, Ga, Ge, Sn, and Sb. , Ni-carbide carbonyl clusters display a very rich chemistry and may contain 1–10 interstitial C atoms. Conversely, heavier heteroatoms show a poorer chemistry.…”
Section: Introductionmentioning
confidence: 99%
“…It has been pointed out that molecular metal nanoclusters might be interesting models for the investigation of metal aggregates at the nanolevel, as well as promising precursors for the preparation of metal nanoparticles and catalytic materials. Thus, it is quite remarkable that molecular nickel phosphide nanoclusters have not been reported up to now. This should be contrasted with the tendency of Ni to form several molecular carbonyl clusters containing other fully interstitial p-block elements, such as C, Ga, Ge, Sn, and Sb. , Ni-carbide carbonyl clusters display a very rich chemistry and may contain 1–10 interstitial C atoms. Conversely, heavier heteroatoms show a poorer chemistry.…”
Section: Introductionmentioning
confidence: 99%
“…Investigation on bimetallic nanoparticles in colloidal solution is of great interest due to their applications in catalysis [ 1 4 ], electronics [ 5 ], optics [ 5 , 6 ], and the change in the surface plasmon band energy [ 7 , 8 ] relative to the component monometallic particles [ 9 ]. Two different types of bimetallic colloids exist: alloys, and those with a core-shell structure [ 10 , 11 ].…”
Section: Introductionmentioning
confidence: 99%
“…High-resolution TEM and HAADF images may help address this issue and provide direct evidence. 64,66,124,142 For instance, Figure 1.14 shows an appealing highresolution TEM image of the microscopic structure of Au/IrO 2 /TiO 2 obtained from oxidative transformation of Au-Ir/TiO 2 at 400 1C. 142 (2) First principle DFT calculations may be able to tell us why the presence of certain additives may enhance the thermal stability of gold nanoparticles, 89,96,143 and to predict the compositions and structures of better catalysts.…”
Section: Discussionmentioning
confidence: 98%
“…However, the transformation of supported bimetallic particles under certain conditions is often inevitable. 67,70,[120][121][122][123][124][125][126] In particular, some metals (e.g., Cu, Ni, Fe) can be oxidized at elevated temperatures. This situation has led to the development of catalysts with enhanced performance.…”
Section: In Situ Transformation Of Supported Bimetallic Catalysts Intmentioning
confidence: 99%