Ethane hydrogenolysis over nickel-palladium alloy films

Journal Article · Fri Oct 27 00:00:00 EDT 1978 · J. Catal.; (United States)

DOI:https://doi.org/10.1016/0021-9517(78)90191-4· OSTI ID:7147692

Moss, R L; Pope, D; Gibbons, H R

Under the experimental conditions used (300/sup 0/C 8.5 mm Hg ethane, 15.5 mm Hg hydrogen) methane was formed at approx. 2.5 mm Hg/min on pure nickel, but the activity decreased to 0.05 mm Hg/min at 60Vertical Bar3< palladium and decreased further to 0.0006 mm Hg/min on pure palladium. New Auger electron spectroscopic data showed less surface enrichment in palladium than measured previously, so that some surface nickel remained, even at Vertical Bar3: 65Vertical Bar3< bulk palladium content. In terms of surface composition, the activity remained constant at the value for pure nickel up to 50Vertical Bar3< surface palladium and then decreased monotonically to the value for pure palladium with increasing surface palladium content. These results are consistent with a concept of active centers consisting of ensembles of six mixed surface atoms of which at least two must be adjacent nickel atoms.

• Research Organization: Warren Spring Lab.
• OSTI ID: 7147692
• Journal Information: J. Catal.; (United States), Journal Name: J. Catal.; (United States) Vol. 55:1; ISSN JCTLA
• Country of Publication: United States
• Language: English

Related Subjects

090121* -- Hydrocarbon Fuels-- Chemical Synthesis-- (1976-1989)
10 SYNTHETIC FUELS
ALKANES
ALLOYS
AUGER ELECTRON SPECTROSCOPY
CHEMICAL REACTIONS
ELECTRON SPECTROSCOPY
ETHANE
FILMS
HYDROCARBONS
HYDROGENATION
METHANE
NICKEL ALLOYS
ORGANIC COMPOUNDS
PALLADIUM ALLOYS
PLATINUM METAL ALLOYS
SPECTROSCOPY
SURFACE PROPERTIES
SYNTHESIS