State of Sn in Pt-Sn-alumina catalyst: XPS study |
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| Authors: | Yong-Xi Li John M Stencel and Burtron H Davis |
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| Institution: | (1) Kentucky Energy Cabinet Laboratory, P.O. Box 13015, 40512 Lexington, Kentucky, USA |
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| Abstract: | XPS examination of reduced Pt-Sn-alumina catalysts showed that a portion of the tin was present in the zerovalent state; this is in contrast to XPS data published previously. It appears from the XPS Sn(O) and Pt(O) areas that the composition of the PtSn alloy, if present, becomes richer in Sn as the Pt:Sn ratio varies from 1 1 to 18.
                  Pt-Sn/Al2O3     ,   ,   .    Sn(O) Pt(O) , Pt Sn,  Sn  Pt:Sn 1:1 1:8.
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