Title of article
Particle size dependent CO dissociation on alumina-supported Rh: a model study
Author/Authors
Frank ، نويسنده , , Hoda M. and Andersson، نويسنده , , S. and Libuda، نويسنده , , J. and Stempel، نويسنده , , S. and Sandell، نويسنده , , A. and Brena، نويسنده , , B. and Giertz، نويسنده , , A. and Brühwiler، نويسنده , , P.A. and Bنumer، نويسنده , , M. and Mهrtensson، نويسنده , , Luke N. and Freund، نويسنده , , H.-J.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 1997
Pages
8
From page
92
To page
99
Abstract
Via deposition of Rh from the gas phase onto a thin, well-ordered alumina film we have prepared various of alumina-supported Rh particle systems. The morphologies and particle sizes have been characterised with spot profile analysis LEED and STM measurements. The probabilities for thermally induced dissociation of adsorbed CO at temperatures between 350 and 500 K were determined from C 1s photoelectron spectra. For small aggregates the dissociation activity increases with increasing average particle size. After reaching a maximum for particles containing an average of 500 to 1000 Rh atoms, the fraction of dissociated CO decreases to values closer to those observed well-prepared Rh single crystal surfaces.
Journal title
Chemical Physics Letters
Serial Year
1997
Journal title
Chemical Physics Letters
Record number
1771597
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