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Main Title: Palladium-catalyzed hydroxycarbonylation of 1-dodecene in microemulsion systems: does reaction performance care about phase behavior?
Author(s): Schmidt, Marcel
Urban, Carolina
Schmidt, Svenja
Schomäcker, Reinhard
Type: Article
Language Code: en
Abstract: Catalysis, particularly metal-catalyzed reactions in microemulsion systems, offers a sustainable approach for organic reactions in water. However, it is still a challenging task because of the complex role of the nonionic surfactant in such a system and the interaction of the phase behavior and reaction performance. To get a profound knowledge of this role and interaction, a systematic study of the palladium-catalyzed hydroxycarbonylation of 1-dodecene in a microemulsion system is reported. The influence of the temperature, additives such as cosolvents, the catalyst concentration, and the hydrophilicity of the surfactant and its concentration has been investigated with regard to both the phase behavior and reaction performance. Interestingly, the investigations reveal that not the phase behavior of the microemulsion system but mainly the dimension of the oil–water interface and the local concentrations of the substrates at this interface, which is provided by the amount and hydrophilicity of the surfactant, control the reaction performance of hydroxycarbonylation in these systems. Moreover, it was found that the local concentration of the active catalyst complex at the interface is essential for the reaction performance. Dependent on the surface active properties of the catalyst complex, its bulk concentration, and the nature and amount of additives, the local concentration of the active catalyst complex at the interface is strongly influenced, which has a huge impact on the reaction performance.
Issue Date: 17-Oct-2018
Date Available: 1-Nov-2018
DDC Class: 540 Chemie und zugeordnete Wissenschaften
660 Chemische Verfahrenstechnik
Subject(s): acylation
organic compounds and functional groups
phase diagram
Sponsor/Funder: DFG, TH 662/19-1, Open Access Publizieren 2017 - 2018 / Technische Universität Berlin
Journal Title: ACS Omega
Publisher: ACS Publications
Publisher Place: Washington, DC
Volume: 3
Issue: 10
Publisher DOI: 10.1021/acsomega.8b01708
Page Start: 13355
Page End: 13364
ISSN: 2470-1343
Appears in Collections:FG Technische Chemie » Publications

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