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Catalysis with Soluble Hybrids of Highly Branched Macromolecules with Palladium Nanoparticles in a Continuously Operated Membrane Reactor
Author(s) -
Sablong Rafael,
Schlotterbeck Ulf,
Vogt Dieter,
Mecking Stefan
Publication year - 2003
Publication title -
advanced synthesis and catalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.541
H-Index - 155
eISSN - 1615-4169
pISSN - 1615-4150
DOI - 10.1002/adsc.200390034
Subject(s) - chemistry , palladium , catalysis , ultrafiltration (renal) , membrane , nanoparticle , cyclohexene , membrane reactor , metal , macromolecule , amphiphile , chemical engineering , polymer chemistry , organic chemistry , chromatography , copolymer , polymer , biochemistry , engineering
Abstract The continuous recovery and recycling of soluble metal nanoparticles by means of ultrafiltration is described, employing hybrids of palladium nanoparticles with highly branched amphiphilic polyglycerol as a catalyst for cyclohexene hydrogenation as a model reaction. In a continuously operated membrane reactor a productivity of 29000 TO over 30 exchanged reactor volumes was observed for nanoparticles of 2.2 nm size, with a maximum rate of 1200 TO h −1 . Catalysis by soluble metal complexes can be excluded. After 30 hours of operation, some decrease in activity is observed which is due to deposition of palladium on the ultrafiltration membrane, however this material does not contribute to catalytic activity.