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A New Strategy in Heterogeneous Catalysis: The Design of Cortex Catalysts
Author(s) -
Reetz Manfred T.,
Quaiser Stefan A.,
Breinbauer Rolf,
Tesche Bernd
Publication year - 1996
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.199527281
Subject(s) - bimetal , catalysis , cluster (spacecraft) , metal , schematic , chemical engineering , materials science , chemistry , nanotechnology , organic chemistry , metallurgy , computer science , engineering , programming language , electronic engineering
Without appreciable migration into the pores of the support (Al 2 O 3 ), preformed and size‐selectively synthesized metal clusters (e.g. Pd or Ni) and bimetal clusters (e.g. Pt/Sn) stabilized by ammonium salts can be placed specifically on the outer surface and immobilized (see schematic representation on the right; black: metal cluster, gray: support particles). Initial experiments indicate that such cortex catalysts show increased activities in hydrogenation reactions.