Synthesis, Characterization, and Catalytic Activity of Pd(II) Salen-Functionalized Mesoporous Silica
| Autor: | Uthai Sakee, Rotcharin Sawisai, Widchaya Radchatawedchakoon, Ratchaneekorn Wanchanthuek |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
inorganic chemicals
Article Subject 010405 organic chemistry Inorganic chemistry chemistry.chemical_element Homogeneous catalysis General Chemistry Mesoporous silica 010402 general chemistry 01 natural sciences 0104 chemical sciences Catalysis lcsh:Chemistry Mesoporous organosilica chemistry.chemical_compound chemistry lcsh:QD1-999 Salen ligand Chelation Hydroamination Nuclear chemistry Palladium |
| Zdroj: | Journal of Chemistry, Vol 2017 (2017) |
| ISSN: | 2090-9071 2090-9063 |
| Popis: | Salen ligand synthesized from 2-hydroxybenzaldehyde and 2-hydroxy-1-naphthaldehyde was used as a palladium chelating ligand for the immobilization of the catalytic site. Mesoporous silica supported palladium catalysts were prepared by immobilizing Pd(OAc)2 onto a mesoporous silica gel through the coordination of the imine-functionalized mesoporous silica gel. The prepared catalysts were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray (EDX), inductivity couple plasma (ICP), nitrogen adsorption-desorption, and Fourier transform infrared (FT-IR) spectroscopy. The solid catalysts showed higher activity for the hydroamination of C-(tetra-O-acetyl-β-D-galactopyranosyl)allene with aromatic amines compared with the corresponding homogenous catalyst. The heterogeneous catalytic system can be easily recovered by simple filtration and reused for up to five cycles with no significant loss of catalytic activity. |
| Databáze: | OpenAIRE |
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