Raney nickel-copper catalysts. I. Structure and leaching properties

Journal Article · Tue Jul 01 04:00:00 EDT 1980 · J. Catal.; (United States)

DOI:https://doi.org/10.1016/0021-9517(80)90484-4· OSTI ID:6602789

Young, D J; Wainwright, M S

The leaching behavior in aqueous NaOH of Al-Cu-Ni alloys containing 50 wt% Al has been examined and interpreted in terms of alloy phase constitution. The alloys contained approximately 0, 10, 20, 30, 40, and 50 wt% Cu and had quenched structures consistent with the ternary phase diagram. The alloys were partly leached and the product was examined metallographically. The Al-Ni alloy leached rapidly, the relative reactivity of the phases being Al(Ni) > NiAl/sub 3/ > Ni/sub 2/Al/sub 3/. The addition of Cu greatly decreased the leachability of the solid solution phase (Ni, Cu)/sub 2/Al/sub 3/. At high Cu levels the ternary phase Cu/sub 4/NiAl/sub 7/ appeared and was found to be resistant to leachant attack. The ternary alloys all had leaching kinetics of the protective type in which a limiting depth attack was approached. The binary Al-Cu alloy behaved similarly whereas the binary Al-Ni leached rapidly to completion.

• Research Organization: Univ. of New South Wales, Kensington, Australia
• OSTI ID: 6602789
• Journal Information: J. Catal.; (United States), Journal Name: J. Catal.; (United States) Vol. 64:1; ISSN JCTLA
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
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10 SYNTHETIC FUELS
ALLOYS
ALUMINIUM ALLOYS
CATALYSTS
CATALYTIC EFFECTS
CHEMICAL REACTIONS
COAL GASIFICATION
COPPER ALLOYS
DATA
DIAGRAMS
DISSOLUTION
EXPERIMENTAL DATA
FISCHER-TROPSCH SYNTHESIS
GASIFICATION
INFORMATION
LEACHING
METHANATION
NICKEL ALLOYS
NUMERICAL DATA
PHASE DIAGRAMS
SEPARATION PROCESSES
SURFACE PROPERTIES
THERMOCHEMICAL PROCESSES