Topological segregation in small bimetallic particles

Autor:	A. Goursot, François Figueras, L. C. de Ménorval, T. Tazi, D. R. Salahub, Bernard Coq
Rok vydání:	1991
Předmět:	Surface (mathematics) Quantum chemical Materials science Adsorption Aggregate (composite) Hydrogenolysis Infrared spectroscopy Topology Bimetallic strip Atomic and Molecular Physics and Optics
Zdroj:	Zeitschrift f�r Physik D Atoms, Molecules and Clusters. 19:367-370
ISSN:	1434-6079 0178-7683
DOI:	10.1007/bf01448330
Popis:	The spatial distribution of the two components at the surface of small RhM/Al2O3 (M=Sn, Pb, Ge) bimetallic aggregates has been investigated by using hydrogenolysis of model alkanes, IR spectroscopy of adsorbed CO and quantum chemical calculations. The addition to a Rh aggregate of a small amount of Sn or Pb inhibits selectively the sites of low coordination, and this demonstrates that there is a topological segregation to these sites; Ge atoms appear to be randomly distributed at the surface. Quantum chemical calculations of the relative stabilities of Rh12M model clusters support these conclusions.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a87973092620b36bd14d8f22c4a8a0eb https://doi.org/10.1007/bf01448330 Zobrazit plný text záznamu Full text from SpringerLink