Cargando…

Study of Alginate-Supported Ionic Liquid and Pd Catalysts

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 monoli...

Descripción completa

Detalles Bibliográficos
Autores principales: Jouannin, Claire, Vincent, Chloë, Dez, Isabelle, Gaumont, Annie-Claude, Vincent, Thierry, Guibal, Eric
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2012
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5327881/
https://www.ncbi.nlm.nih.gov/pubmed/28348294
http://dx.doi.org/10.3390/nano2010031
_version_ 1782510812855795712
author Jouannin, Claire
Vincent, Chloë
Dez, Isabelle
Gaumont, Annie-Claude
Vincent, Thierry
Guibal, Eric
author_facet Jouannin, Claire
Vincent, Chloë
Dez, Isabelle
Gaumont, Annie-Claude
Vincent, Thierry
Guibal, Eric
author_sort Jouannin, Claire
collection PubMed
description 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.
format Online
Article
Text
id pubmed-5327881
institution National Center for Biotechnology Information
language English
publishDate 2012
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-53278812017-03-21 Study of Alginate-Supported Ionic Liquid and Pd Catalysts Jouannin, Claire Vincent, Chloë Dez, Isabelle Gaumont, Annie-Claude Vincent, Thierry Guibal, Eric Nanomaterials (Basel) Article 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. MDPI 2012-01-11 /pmc/articles/PMC5327881/ /pubmed/28348294 http://dx.doi.org/10.3390/nano2010031 Text en © 2012 by the authors. This article is an open-access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).
spellingShingle Article
Jouannin, Claire
Vincent, Chloë
Dez, Isabelle
Gaumont, Annie-Claude
Vincent, Thierry
Guibal, Eric
Study of Alginate-Supported Ionic Liquid and Pd Catalysts
title Study of Alginate-Supported Ionic Liquid and Pd Catalysts
title_full Study of Alginate-Supported Ionic Liquid and Pd Catalysts
title_fullStr Study of Alginate-Supported Ionic Liquid and Pd Catalysts
title_full_unstemmed Study of Alginate-Supported Ionic Liquid and Pd Catalysts
title_short Study of Alginate-Supported Ionic Liquid and Pd Catalysts
title_sort study of alginate-supported ionic liquid and pd catalysts
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5327881/
https://www.ncbi.nlm.nih.gov/pubmed/28348294
http://dx.doi.org/10.3390/nano2010031
work_keys_str_mv AT jouanninclaire studyofalginatesupportedionicliquidandpdcatalysts
AT vincentchloe studyofalginatesupportedionicliquidandpdcatalysts
AT dezisabelle studyofalginatesupportedionicliquidandpdcatalysts
AT gaumontannieclaude studyofalginatesupportedionicliquidandpdcatalysts
AT vincentthierry studyofalginatesupportedionicliquidandpdcatalysts
AT guibaleric studyofalginatesupportedionicliquidandpdcatalysts