One-pot synthesis of aluminum oxyhydroxide matrix-entrapped Pt nanoparticles as an excellent catalyst for the hydrogenation of nitrobenzene
Aluminum oxyhydroxide matrix-entrapped Pt nanoparticles (Pt/AlO(OH)) were synthesized via a one-pot procedure, by the reduction of Pt 4+ followed by the hydrolysis of Al(O- sec -Bu) 3 . Small and well-dispersed Pt nanoparticles were entrapped into an aluminum oxyhydroxide matrix and confirmed by TEM...
Gespeichert in:
Veröffentlicht in: | RSC advances 2014-01, Vol.4 (21), p.10997-11002 |
---|---|
Hauptverfasser: | , , |
Format: | Artikel |
Sprache: | eng |
Schlagworte: | |
Online-Zugang: | Volltext |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | Aluminum oxyhydroxide matrix-entrapped Pt nanoparticles (Pt/AlO(OH)) were synthesized
via
a one-pot procedure, by the reduction of Pt
4+
followed by the hydrolysis of Al(O-
sec
-Bu)
3
. Small and well-dispersed Pt nanoparticles were entrapped into an aluminum oxyhydroxide matrix and confirmed by TEM characterization. FTIR analysis indicated that the Pt/AlO(OH) catalyst had a large amount of surface hydroxyl groups, which potentially improves its dispersibilty in aqueous solution. The as-prepared catalyst was used for the hydrogenation of nitrobenzene to aniline at 30 °C and atmospheric hydrogen pressure. Compared with other alcohol–water media, the hydrogenation reaction in a methanol–water medium exhibited a maximum turnover frequency (TOF) of 3620 h
−1
. A complete conversion of nitrobenzene with a selectivity of 99.0% was obtained with an increase of time to 150 min. |
---|---|
ISSN: | 2046-2069 2046-2069 |
DOI: | 10.1039/C3RA46776G |