Chitosan as a Bio-Based Ligand for the Production of Hydrogenation Catalysts

Chitosan as a Bio-Based Ligand for the Production of Hydrogenation Catalysts

Bio-based polymers are attracting increasing interest as alternatives to harmful and environmentally concerning non-biodegradable fossil-based products. In particular, bio-based polymers may be employed as ligands for the preparation of metal nanoparticles (M(0)NPs). In this study, chitosan (CS) was...

Full description

Saved in:
Bibliographic Details
Published in:Molecules (Basel, Switzerland) Vol. 29; no. 9; p. 2083
Main Authors: Paganelli, Stefano, Brugnera, Eleonora, Di Michele, Alessandro, Facchin, Manuela, Beghetto, Valentina
Format: Journal Article
Language:English
Published: Switzerland MDPI AG 01-05-2024
Subjects:
Biodegradable materials
Calorimetry
Carbon
catalysis
Catalysts
chitosan
Chromatography
Diffraction
Efficiency
Electron microscopes
Experiments
Fourier transforms
Hydrogenation
Infrared spectroscopy
Ligands
metal nanoparticles
Nanoparticles
Nitrogen
platform chemicals
recyclable nanoparticles
Scanning electron microscopy
Sensors
Software
X-rays
Germany
United States > US
Italy
chitosan
catalysis
metal nanoparticles
recyclable nanoparticles
platform chemicals
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Bio-based polymers are attracting increasing interest as alternatives to harmful and environmentally concerning non-biodegradable fossil-based products. In particular, bio-based polymers may be employed as ligands for the preparation of metal nanoparticles (M(0)NPs). In this study, chitosan (CS) was used for the stabilization of Ru(0) and Rh(0) metal nanoparticles (MNPs), prepared by simply mixing RhCl × 3H O or RuCl with an aqueous solution of CS, followed by NaBH reduction. The formation of M(0)NPs-CS was confirmed by Fourier Transform Infrared Spectroscopy (FT-IR), Differential Scanning Calorimetry (DSC), Thermal Gravimetric Analysis (TGA), Scanning Electron Microscopy (SEM), Energy-Dispersive X-ray Analysis (EDX), Transmission Electron Microscopy (TEM) and X-ray Diffraction (XRD). Their size was estimated to be below 40 nm for Rh(0)-CS and 10nm for Ru(0)-CS by SEM analysis. M(0)NPs-CS were employed for the hydrogenation of ( )-cinnamic aldehyde and levulinic acid. Easy recovery by liquid-liquid extraction made it possible to separate the catalyst from the reaction products. Recycling experiments demonstrated that M(0)NPs-CS were highly efficient up to four times in the best hydrogenation conditions. The data found in this study show that CS is an excellent ligand for the stabilization of Rh(0) and Ru(0) nanoparticles, allowing the production of some of the most efficient, selective and recyclable hydrogenation catalysts known in the literature.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1420-3049
1420-3049
DOI:10.3390/molecules29092083