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Main Title: Rhodium catalyzed hydrogenation reactions in aqueous micellar systems as green solvents
Author(s): Schwarze, Michael
Milano-Brusco, J. S.
Strempel, V.
Hamerla, Tobias
Wille, S.
Fischer, C.
Baumann, W.
Arlt, W.
Schomäcker, Reinhard
Type: Article
Language Code: en
Abstract: The hydrogenation of itaconic acid and dimethyl itaconate is transferred from methanol to aqueous micellar solutions of several surfactants, e.g., SDS and Triton X-100, in order to facilitate the recovery of the catalyst. The reaction rate and selectivity strongly depends on the chosen surfactant and in some cases also on the surfactant concentration. In the best case the selectivity is the same as in methanol but the reaction rate is still lower because of a lower hydrogen solubility in water. Repetitive semi-batch experiments are chosen to demonstrate that high turn-over-numbers (>1000) can be reached in aqueous micellar solutions. No notable catalyst deactivation is observed in these experiments. The performance of micellar reaction systems is controlled by the partition coefficient of the substrates between the micelles and the continuous aqueous phase which can be predicted using the Conductor-like Screening Model for Real Solvents (COSMO-RS).
Issue Date: 2011
Date Available: 30-Jun-2016
DDC Class: 540 Chemie und zugeordnete Wissenschaften
Sponsor/Funder: DFG, EXC 314, Unifying Concepts in Catalysis
Journal Title: RSC Advances : an international journal to further the chemical sciences
Publisher: Royal Society of Chemistry
Publisher Place: Cambridge
Volume: 1
Issue: 3
Publisher DOI: 10.1039/c1ra00397f
Page Start: 474
Page End: 483
EISSN: 2046-2069
Notes: Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG geförderten) Allianz- bzw. Nationallizenz frei zugänglich.
This publication is with permission of the rights owner freely accessible due to an Alliance licence and a national licence (funded by the DFG, German Research Foundation) respectively.
Appears in Collections:Inst. Chemie » Publications

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