Properties Of Metal Clusters Research Articles

Shell structure and response properties of metal clusters

Electronic shell structure, which was first recognized in sodium clusters, has been observed in alkali and noble metals, as well as in divalent and trivalent metals. Shell structure with modifications is expected to be broadly applicable to most metals. Features in the cluster abundance spectra and in the experimental dipole polarizabilities and ionization potentials correlate well with predictions of electronic level filling in spherical and spheroidal potential wells. The lack of precise quantitative agreement between experiment and theory for the response properties indicates necessary refinements in the self-consistent uniform background jellium model for clusters.

Metallic ions and clusters: Formation, energetics, and reaction

Several aspects of the properties of metal clusters and metals in cluster ions are discussed. In particular, results from our laboratory on the photoionization and reactions of sodium clusters, and the thermochemistry and formation of clusters containing metallic ions are presented.

Characteristics of zeolite-supported iron catalysts prepared from iron cyanide complexes

This chapter discusses the catalytic properties of metal clusters in zeolites. Zeolites and molecular sieves offer a particularly intriguing option for providing channels and cage structures, in which small clusters might be formed and stabilized. The unusual properties of small particles might then be exploited, and the zeolitic structure may itself be utilized to fine-tune the catalytic properties. Several characterization techniques have been used in the examination of clusters in zeolites. The most widely used and/or useful appear to be extended X-ray absorption fine structure (EXAFS), the radial electron distribution (RED) method using X-ray scattering data (XRD), magnetic methods, electron microscopy, electron spin resonance (ESR), nuclear magnetic resonance (NMR) of adsorbed xenon, Mössbauer spectroscopy, X-ray photoelectron spectroscopy (XPS), chemisorption, including the use of temperature-programmed reduction (TPR), temperature-programmed oxidation (TPO) and related methods and infrared (IR) spectroscopy. The chapter reveals that n-Butane conversion has been used as a test reaction for determining the catalytic properties of metal particles in zeolites and the parameters influencing these properties. Platinum has received the most attention and in these studies parameters such as particle size, support acidity, addition of other, metals, and sulphur poisoning are examined.

Growth and properties of metal clusters: applications to catalysis and the photographic processedited by J. Bourdon

<i>Growth and properties of metal clusters: applications to catalysis and the photographic process</i>edited by J. Bourdon

Electronic properties of metal clusters: size effects

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectronic properties of metal clusters: size effectsR. C. BaetzoldCite this: Inorg. Chem. 1981, 20, 1, 118–123Publication Date (Print):January 1, 1981Publication History Published online1 May 2002Published inissue 1 January 1981https://doi.org/10.1021/ic50215a027RIGHTS & PERMISSIONSArticle Views216Altmetric-Citations32LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InReddit PDF (726 KB) Get e-Alerts Get e-Alerts

Chemisorption and the properties of metal clusters

In an earlier [C.W. Bauschlicher, D.H. Liskow, C.F. Bender and H.F. Schaefer, J. Chem. Phys. 62 (1975) 4815] we reported model studies of the chemisorption of atomic hydrogen on the (0001) surface of metallic beryllium. Four distinct sites for chemisorption were considered and the surface was modeled by clusters as large as Be 10. In the present paper, this work has been extended in two directions. First, two distint Be 13 clusters have been studied in an analogous manner. Second, the predicted chemisorption characteristics have been correlated with several properties of the isolated metal clusters. Metal cluster properties investigated include the ionization potential, cohesive energy, and singlet—triplet separation. The various sites for chemisorption are compared and electronic structure considerations discussed.