Issue 24, 2011

New ammoniumsurfactant-stabilized rhodium(0) colloidal suspensions: Influence of novel counter-anions on physico-chemical and catalytic properties

Abstract

Novel anionic species, such as hydrogen carbonate (HCO3), fluoride (F), triflate (CF3SO3), tetrafluoroborate (BF4) and chloride (Cl) were investigated as new partners of water soluble N,N-dimethyl-N-cetyl-N-(2-hydroxyethyl) ammonium salts, used as a protective agent of rhodium colloids. The effect of the surfactant polar head on the micellar behavior, size and morphology of the nanospecies was studied by adapted physico-chemical experiments (surface tension measurements, dynamic light scattering, thermogravimetric and TEM analyses) and discussed in terms of strong or weak stabilization of the growing nanoparticles surface. Finally, the influence of the nanoenvironment generated by the surfactant with various counter-anions was evaluated via the hydrogenation of aromatics.

Graphical abstract: New ammonium surfactant-stabilized rhodium(0) colloidal suspensions: Influence of novel counter-anions on physico-chemical and catalytic properties

Article information

Article type
Paper
Submitted
14 Dec 2010
Accepted
07 Apr 2011
First published
16 May 2011

Dalton Trans., 2011,40, 6524-6531

New ammonium surfactant-stabilized rhodium(0) colloidal suspensions: Influence of novel counter-anions on physico-chemical and catalytic properties

E. Guyonnet Bilé, R. Sassine, A. Denicourt-Nowicki, F. Launay and A. Roucoux, Dalton Trans., 2011, 40, 6524 DOI: 10.1039/C0DT01763A

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