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Supported Bimetallic AuPd Nanoparticles as a Catalyst for the Selective Hydrogenation of Nitroarenes.
- Source :
-
Nanomaterials (Basel, Switzerland) [Nanomaterials (Basel)] 2018 Sep 05; Vol. 8 (9). Date of Electronic Publication: 2018 Sep 05. - Publication Year :
- 2018
-
Abstract
- The solvent-free selective hydrogenation of nitrobenzene was carried out using a supported AuPd nanoparticles catalyst, prepared by the modified impregnation method (M <subscript>Im</subscript> ), as efficient catalyst >99% yield of aniline (AN) was obtained after 15 h at 90 °C, 3 bar Hâ‚‚ that can be used without any further purification or separation, therefore reducing cost and energy input. Supported AuPd nanoparticles catalyst, prepared by M <subscript>Im</subscript> , was found to be active and stable even after four recycle experiments, whereas the same catalyst prepared by S <subscript>Im</subscript> was deactivated during the recycle experiments. The most effective catalyst was tested for the chemoselective hydrogenation of 4-chloronitrobenzene (CNB) to 4-chloroaniline (CAN). The activation energy of CNB to CAN was found to be 25 kJ mol <superscript>-1</superscript> , while that of CNB to AN was found to be 31 kJ mol <superscript>-1</superscript> . Based on this, the yield of CAN was maximized (92%) by the lowering the reaction temperature to 25 °C.
Details
- Language :
- English
- ISSN :
- 2079-4991
- Volume :
- 8
- Issue :
- 9
- Database :
- MEDLINE
- Journal :
- Nanomaterials (Basel, Switzerland)
- Publication Type :
- Academic Journal
- Accession number :
- 30189685
- Full Text :
- https://doi.org/10.3390/nano8090690