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A general approach to NR 4 ⊖ ‐stabilized metal colloids in organic phases
Author(s) -
Bönnemann Helmut,
Brinkmann Rainer,
Köppler Rainer,
Neiteler Peter,
Richter Joachim
Publication year - 1992
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.19920041208
Subject(s) - colloid , reducing agent , metal , homogeneous , salt (chemistry) , catalysis , materials science , transition metal , inorganic chemistry , macromolecule , nanotechnology , chemical engineering , combinatorial chemistry , chemistry , organic chemistry , metallurgy , physics , thermodynamics , biochemistry , engineering
The stabilization of metal particles in a recent synthesis of colloidal transition metals was achieved by combining the stabilizing agent (NR ⊕ 4 ) with the reducing agent (NR 4 BEt 3 H). The disadvantages inherent to this method (the cost of the reducing agent synthesis and the need for stoichiometric amounts of stabilizing agent) have been overcome in the development reported here: NR ⊕ 4 ‐stabilized (isolatable) metals of groups 6‒11 are produced by coupling the stabilizing agent to the metal salt that is to be reduced and reducing with simple inorganic and organic reducing agents. These isolatable colloid powders are precursors to highly active homogeneous and heterogeneous metal colloid catalysts.