Alloy formation in supported Pt-Sn catalysts: Moessbauer studies

Journal Article · Fri Mar 01 04:00:00 EST 1991 · Journal of Catalysis; (USA)

DOI:https://doi.org/10.1016/0021-9517(91)90061-8· OSTI ID:5493870

Li, Y X; Davis, B H ^[1]; Klabunde, K J ^[2]

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1. Center for Applied Energy Research, Lexington, KY (USA)
2. Kansas State Univ., Manhattan (USA)

A series of materials that contained 1 wt% Pt and Pt: Sn atomic ratios varying from 1:1 to 1:8 were prepared. These metals were supported on alumina (100 or 250 m{sup 2}/g) or silica (700 m{sup 2}/g). For both alumina supports, the fraction of Pt that was present in an alloy increased with increasing tin content; the data are consistent with, but do not require, an alloy with a composition of PtSn. For these materials, zero valent tin is more easily obtained following reduction in hydrogen when silica is used as the support. Moessbauer data alone indicate that an alloy richer in Sn than PtSn is present on the silica support; however, Moessbauer data combined with XRD data indicate that a PtSn alloy is formed with additional tin being in a metallic state.

• OSTI ID: 5493870
• Journal Information: Journal of Catalysis; (USA), Journal Name: Journal of Catalysis; (USA) Vol. 128:1; ISSN 0021-9517; ISSN JCTLA
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400 -- Petroleum-- Processing
36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
ALLOYS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
BIMETALS
CATALYST SUPPORTS
CATALYSTS
CATALYTIC REFORMING
CHALCOGENIDES
CHEMICAL PREPARATION
CHEMICAL REACTIONS
COAL TAR OILS
COHERENT SCATTERING
DIFFRACTION
DISTILLATES
ENERGY SOURCES
FOSSIL FUELS
FUELS
MOESSBAUER EFFECT
NAPHTHA
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PETROLEUM
PETROLEUM DISTILLATES
PETROLEUM FRACTIONS
PHASE STUDIES
PLATINUM ALLOYS
PLATINUM METAL ALLOYS
QUANTITY RATIO
REDUCTION
REFORMER PROCESSES
SCATTERING
SILICON COMPOUNDS
SILICON OXIDES
SPECTROSCOPY
SURFACE PROPERTIES
SYNTHESIS
TIN ALLOYS
X-RAY DIFFRACTION