Design of nanostructured palladium catalyst supported by chitosan/Co3O4 microspheres and investigation of its catalytic behavior against synthesis of benzonitriles
| Autor: | Talat Baran, Melike Çalışkan |
|---|---|
| Přispěvatelé: | Sabire Yazıcı Fen Edebiyat Fakültesi |
| Rok vydání: | 2021 |
| Předmět: |
Aryl halide
Halide 02 engineering and technology Cyanation Biochemistry Catalysis Chitosan 03 medical and health sciences chemistry.chemical_compound Structural Biology Molecular Biology Cobalt oxide 030304 developmental biology chemistry.chemical_classification 0303 health sciences Benzonitrile General Medicine 021001 nanoscience & nanotechnology chemistry Organic reaction Nanocatalyst 0210 nano-technology Cobalt Oxide Nuclear chemistry |
| Zdroj: | International Journal of Biological Macromolecules. 182:722-729 |
| ISSN: | 0141-8130 |
| Popis: | Designing of eco-friendly, low cost, and thermally stable stabilizing/supporting agents are always desired for production of catalyst systems which provide good catalytic performance in organic reactions. In this study, a novel, green, and efficient stabilizer containing chitosan/Co3O4 microspheres (CS/Co3O4) was developed. Palladium nanoparticles (Pd NPs) were then successfully immobilized on CS/Co3O4 as a heterogeneous nanocatalyst (Pd NPs/CS/Co3O4). Characterization of the designed materials were performed by FT-IR, TEM, FE-SEM, XRD, and EDS and it was determined that Pd NPs formed as approximately 20 nm. Catalytic behavior of Pd NPs/CS/Co3O4 was investigated in the production of different substituted benzonitriles via aryl halide cyanation. Catalytic studies indicate that electron-rich or poor aromatic halides were smoothly cyanated with good reaction yields by Pd NPs/CS/Co3O4 nanocatalyst by using K4[Fe(CN)6] as the cyanating agent. Moreover, it was found that Pd NPs/CS/Co3O4 nanocatalyst provided not only good reaction yields and but also good recovery/reusability for six times in the aryl halide cyanations. This paper displays that Pd NPs/CS/Co3O4 nanocatalyst has a great catalytic and recycling potential for aryl halide cyanations. |
| Databáze: | OpenAIRE |
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