Issue 35, 2006
From the journal:

Chemical Communications

Expanding the useful range of ionic liquids: melting point depression of organic salts with carbon dioxide for biphasic catalytic reactions

Aaron M. Scurtoac  and  Walter Leitner*ab  

* Corresponding authors

a Institut für Technische und Makromolekulare Chemie, RWTH Aachen, Worringerweg 1, D-52074 Aachen, Germany
E-mail: leitner@itmc.rwth-aachen.de
Fax: +49-(0)241-80 22177

b Max-Planck-Institut für Kohlenforschung, Mülheim an der Ruhr, Germany

c Department of Chemical & Petroleum Engineering and NSF-ERC Center for Environmentally Beneficial Catalysis, University of Kansas, Lawrence, USA
E-mail: ascurto@ku.edu
Fax: +1 (785) 864-4947

Abstract

Large and previously unreported melting point depressions (even exceeding ΔTm of 100 °C) were observed for simple ammonium and phosphonium salts in the presence of compressed CO2, bringing them well within the range of typical ionic liquids; possible applications include biphasic catalysis in IL/scCO2 systems as demonstrated for rhodium complex catalyzed hydrogenation, hydroformylation, and hydroboration of 2-vinyl-naphthalene using a CO2-induced molten sample of [NBu4][BF4] as a catalyst phase at temperatures in the range of 55–75 °C, i.e. 100 °C below the normal melting point of the organic salt.

Graphical abstract: Expanding the useful range of ionic liquids: melting point depression of organic salts with carbon dioxide for biphasic catalytic reactions

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Article information

DOI
https://doi.org/10.1039/B606130C
Article type
Communication
Submitted
02 May 2006
Accepted
28 Jun 2006
First published
18 Jul 2006

Chem. Commun., 2006, 3681-3683

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Expanding the useful range of ionic liquids: melting point depression of organic salts with carbon dioxide for biphasic catalytic reactions

A. M. Scurto and W. Leitner, Chem. Commun., 2006, 3681 DOI: 10.1039/B606130C

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