Metal clusters on supports: synthesis, structure, reactivity, and catalytic properties

2010 ◽  
Vol 46 (33) ◽  
pp. 5997 ◽  
Author(s):  
Apoorva Kulkarni ◽  
Rodrigo J. Lobo-Lapidus ◽  
Bruce C. Gates
Keyword(s):  
Metal Clusters ◽  
Catalytic Properties

Synthesis and Catalytic Properties of Metal Clusters Encapsulated within Small-Pore (SOD, GIS, ANA) Zeolites

2012 ◽  
Vol 134 (42) ◽  
pp. 17688-17695 ◽  
Author(s):  
Sarika Goel ◽  
Zhijie Wu ◽  
Stacey I. Zones ◽  
Enrique Iglesia
Keyword(s):  
Metal Clusters ◽  
Catalytic Properties ◽  
Small Pore

Catalytic Properties of Nanostructured Pt and Ru Metal Clusters over Alumina Promoted by CeO2.

ChemInform ◽  
2007 ◽  
Vol 38 (28) ◽  
Author(s):  
K. Dossumov ◽  
R. Kh. Salakhova ◽  
N. M. Popova ◽  
S. A. Tungatarova ◽  
V. P. Grigorieva ◽  
...  
Keyword(s):  
Metal Clusters ◽  
Catalytic Properties ◽  
Nanostructured Pt

scholarly journals Unique size-dependent nanocatalysis revealed at the single atomically precise gold cluster level

2018 ◽  
Vol 115 (42) ◽  
pp. 10588-10593 ◽  
Author(s):  
Yuwei Zhang ◽  
Ping Song ◽  
Tiankai Chen ◽  
Xiaodong Liu ◽  
Tao Chen ◽  
...  
Keyword(s):  
Size Effect ◽  
Density Functional ◽  
Metal Clusters ◽  
Catalytic Properties ◽  
Product Formation ◽  
Size Dependent ◽  
Au Clusters ◽  
Langmuir Hinshelwood Mechanism ◽  
Single Cluster ◽  
Cluster Level

Atomically precise metal clusters have attracted increasing interest owing to their unique size-dependent properties; however, little has been known about the effect of size on the catalytic properties of metal clusters at the single-cluster level. Here, by real-time monitoring with single-molecule fluorescence microscopy the size-dependent catalytic process of individual Au clusters at single-turnover resolution, we study the size-dependent catalytic behaviors of gold (Au) clusters at the single-cluster level, and then observe the strong size effect on the catalytic properties of individual Au clusters, in both catalytic product formation and dissociation processes. Surprisingly, indicated by both experiments and density functional theory (DFT) calculations, due to such a unique size effect, besides observing the different product dissociation behaviors on different-sized Au clusters, we also observe that small Au clusters [i.e., Au15(MPA)13; here, MPA denotes 3-mercaptopropionic acid] catalyze the product formation through a competitive Langmuir–Hinshelwood mechanism, while those relatively larger Au clusters [e.g., Au18(MPA)14 and Au25(MPA)18] or nanoparticles catalyze the same process through a noncompetitive Langmuir–Hinshelwood mechanism. Such a size effect on the nanocatalysis could be attributed intrinsically to the size-dependent electronic structure of Au clusters. Further analysis of dynamic activity fluctuation of Au clusters reveals more different catalytic properties between Au clusters and traditional Au nanoparticles due to their different size-dependent structures.

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