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Nanomaterials 2012, 2(1), 31-53; doi:10.3390/nano2010031

Study of Alginate-Supported Ionic Liquid and Pd Catalysts

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Received: 4 October 2011 / Revised: 9 December 2011 / Accepted: 29 December 2011 / Published: 11 January 2012
(This article belongs to the Special Issue From Molecules to Nanomaterials)
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Abstract: New catalytic materials, based on palladium immobilized in ionic liquid supported on alginate, were elaborated. Alginate was associated with gelatin for the immobilization of ionic liquids (ILs) and the binding of palladium. These catalytic materials were designed in the form of highly porous monoliths (HPMs), in order to be used in a column reactor. The catalytic materials were tested for the hydrogenation of 4-nitroaniline (4-NA) in the presence of formic acid as hydrogen donor. The different parameters for the elaboration of the catalytic materials were studied and their impact analyzed in terms of microstructures, palladium sorption properties and catalytic performances. The characteristics of the biopolymer (proportion of β-D-mannuronic acid (M) and α-L-guluronic acid (G) in the biopolymer defined by the M/G ratio), the concentration of the porogen agent, and the type of coagulating agent significantly influenced catalytic performances. The freezing temperature had a significant impact on structural properties, but hardly affected the catalytic rate. Cellulose fibers were incorporated as mechanical strengthener into the catalytic materials, and allowed to enhance mechanical properties and catalytic efficiency but required increasing the amount of hydrogen donor for catalysis.
Keywords: alginate; ionic liquid; highly porous monolith; palladium; 4-nitroaniline; catalytic hydrogenation alginate; ionic liquid; highly porous monolith; palladium; 4-nitroaniline; catalytic hydrogenation
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Jouannin, C.; Vincent, C.; Dez, I.; Gaumont, A.-C.; Vincent, T.; Guibal, E. Study of Alginate-Supported Ionic Liquid and Pd Catalysts. Nanomaterials 2012, 2, 31-53.

AMA Style

Jouannin C, Vincent C, Dez I, Gaumont A-C, Vincent T, Guibal E. Study of Alginate-Supported Ionic Liquid and Pd Catalysts. Nanomaterials. 2012; 2(1):31-53.

Chicago/Turabian Style

Jouannin, Claire; Vincent, Chloë; Dez, Isabelle; Gaumont, Annie-Claude; Vincent, Thierry; Guibal, Eric. 2012. "Study of Alginate-Supported Ionic Liquid and Pd Catalysts." Nanomaterials 2, no. 1: 31-53.

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