Metallic glasses as new catalyst systems for energy conversion. Annual progress report and final technical report

Technical Report · Thu May 31 04:00:00 EDT 1984

OSTI ID:6755877

Brower, Jr, W E; Smith, G V

Splat cooled Pd/sub 80/ Si/sub 20/ surfaces are atomically rough and are rich in highly uncoordinated sites approximating kinks in crystalline materials. These sites are only partly destroyed by thermal aging, are not destroyed by cyclic aging in hydrogen, and do not form a ..beta..-Pd-hydride phase. Apparently Si imparts to Pd a high resistance towards surface reconstruction, while allowing it to continue to function as Pd in the catalytic sense. Splat cooled Fe/sub 80/B/sub 20/ can be made glassy, but a sample of Metglas (Allied Chemical Fe/sub 80/B/sub 20/ No. 2605) was only partly glassy and crystallized at a lower temperature than the shock tube splat cooled glass. These findings are supported by physical, theoretical, and chemical techniques. Physical techniques include x-ray photoelectron spectroscopy, Moessbauer Spectroscopy, and differential scanning calorimetry. Theoretical techniques include surface structural modelling and heat and fluid flow modelling during splat cooling. Chemical techniques include chemisorption of H/sub 2/, O/sub 2/, and CO as well as the catalytic reactions of alkene and alkyne molecular probes. One of these reactions is the isomerization and hydrogenation of (+)-apopinene.

• Research Organization: Southern Illinois Univ., Carbondale (USA)
• DOE Contract Number: AC02-81ER10897
• OSTI ID: 6755877
• Report Number(s): DOE/ER/10897-3; ON: DE84013697
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360100* -- Metals & Alloys
ALLOYS
BORON ALLOYS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYTIC EFFECTS
CHALCOGENIDES
COOLING
METALLIC GLASSES
MOESSBAUER EFFECT
OXIDES
OXYGEN COMPOUNDS
PALLADIUM ALLOYS
PLATINUM METAL ALLOYS
RESEARCH PROGRAMS
SILICON ALLOYS
SPLAT COOLING