Title of article
FTIR study of the interaction of CO and CO with 2 silica-supported PtSn alloy
Author/Authors
J. Llorca، نويسنده , , N. Homs )، نويسنده , , J. Aran?a، نويسنده , , J. Sales De Gauzy، نويسنده , , P. Ram´?rez de la Piscina 1، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 1998
Pages
8
From page
217
To page
224
Abstract
The interaction between CO2 and the silica-supported PtSn alloy gave rise to an infrared band at 2339 cmy1 which was
assigned to the coordination of this molecule to the bimetallic phase. The coadsorption of CO and CO2 indicates that both
compete for similar coordination sites on the supported PtSn alloy. A CO singleton vibration frequency at ca. 2054 cmy1
was determined for both PtrSiO2and PtSnrSiO2catalysts. A dilution effect caused by tin in the silica-supported PtSn alloy
is proposed. The presence of isolated Pt sites in the particles of this alloy determine their unique capability to coordinate the
CO2 molecule in the active sites. q1998 Elsevier Science B.V. All rights reserved.
Keywords
TIN , Supported platinum–tin alloys , Infrared absorption spectroscopy , catalysis , Platinum , Chemisorption
Journal title
Applied Surface Science
Serial Year
1998
Journal title
Applied Surface Science
Record number
992786
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