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Raney® Catalysts
Grace Davison's Raney® catalyst family is an efficient class of
catalyst available for numerous organic processes including
hydrogenations,
ammonolysis,
reductive alkylation and
dehydrogenations. They are available in both slurry and fixed bed form.
They are usually made from nickel, cobalt, and copper base metals. Various
promoter metals (molybdenum, chromium, iron, etc.) can be added to the base
metals to affect selectivity and activity. With their high activity and
selective characteristics, Raney® catalysts can be an effective and
economically attractive catalyst to increase process throughput while decreasing
byproduct formation. Read on to find out more about general selection
guidelines, description of Raney® catalysts, and key benefits of
Raney® catalysts, or check out our selection of products:
Raney®
Slurry Grades
Raney® Catalyst
Applications
Raney® Fixed
Bed Grades
General Selection Guidelines:
Base metal activity is typically ranked in the following
order: Nickel>Cobalt>Copper
Promoter metals added to base metals can affect selectivity and activity.
Particle size should be optimized between activity and separation capabilities.
Description of Raney®
Catalysts
Origin - Selective dissolution or
dissolution / reprecipitation from M-Al alloy, where (M = Ni, Co, Cu, etc.)
Composition - Mostly M (>90%), plus Al species and (optional) promoters, e.g.
Mo, Cr
Structure - Extended porous "skeleton" or "sponge" of M with dissolved Al (and
promoters) plus surface hydrous oxides, adsorbed H radicals and hydrogen bubbles
in pores
Value - Ready-to-use hydrogenation catalyst for synthesis of amines, alcohols,
polyols, alkanes, etc. from unsaturates
Key Benefits of Raney® Catalysts
Readiness-for-use (requires no
reduction or other activation)
Low cost vs. precious metals
High metal surface area leading to
high activity
Chemical durability in wide range of
environments
Relative ease of separation from
product (high density)
'Customizability' of composition
'Customizability' of particle size
distribution
All Raney® catalyst products can be customized
to maximize application efficiency.
Contact us
to assist you in your catalyst selection.
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