Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Particulate matter
Patent
1996-12-18
1999-07-20
Le, Hoa T.
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Particulate matter
205464, 419 23, 419 30, 419 61, 419 63, 419 65, 420580, 420590, 428403, 428328, 428331, B32B 516, C25B 100, B22F 100
Patent
active
059254637
ABSTRACT:
The object of the invention is a method for the electrochemical preparation of metal colloids with particle sizes of less than 30 nm, characterized in that one or more metals of groups Ib, IIb, III, IV, V, VI, VIIb, VIII, lanthanoides, and/or actinoides of the periodic table are cathodically reduced in the presence of a stabilizer, optionally with a supporting electrolyte being added, in organic solvents or in solvent mixtures of organic solvents and/or water within a temperature range of between -78.degree. C. and +120.degree. C. to form metal colloidal solutions or redispersible metal colloid powders, optionally in the presence of inert substrates and/or soluble metal salts of the respective metals.
The invention further relates to soluble or redispersible colloids as well as application on substrates and immobilization thereof, in particular for the preparation of catalysts.
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Helbig Wolfgang
Quaiser Stefan Andreas
Reetz Manfred T.
Le Hoa T.
Studiengesellschaft Kohle MBH
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