Magnetic crosslinked copoly(ionic liquid) nanohydrogel supported palladium nanoparticles as efficient catalysts for the selective aerobic oxidation of alcohols
| العنوان: | Magnetic crosslinked copoly(ionic liquid) nanohydrogel supported palladium nanoparticles as efficient catalysts for the selective aerobic oxidation of alcohols |
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| المؤلفون: | Carmen Nájera, Nasser Nikfarjam, Mohammad Gholinejad, Mahmoud Afrasi |
| المساهمون: | Universidad de Alicante. Departamento de Química Orgánica, Síntesis Asimétrica (SINTAS) |
| المصدر: | RUA. Repositorio Institucional de la Universidad de Alicante Universidad de Alicante (UA) |
| بيانات النشر: | Elsevier BV, 2018. |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | Thermogravimetric analysis, Magnetic, 010405 organic chemistry, Process Chemistry and Technology, Energy-dispersive X-ray spectroscopy, Infrared spectroscopy, chemistry.chemical_element, 010402 general chemistry, 01 natural sciences, Catalysis, 0104 chemical sciences, chemistry.chemical_compound, Química Orgánica, chemistry, X-ray photoelectron spectroscopy, Alcohols, Alcohol oxidation, Oxidation, Ionic liquid, Nanohydrogel, Allyl alcohol, Palladium, Nuclear chemistry |
| الوصف: | Nowadays it is still a great sustainable processes challenge to produce efficient, selective and easy magnetic recovery and recycling catalysts for oxidation of alcohols using air as the oxidant. In this work, a new magnetic nanohydrogel comprising [DABCO-allyl][Br] ionic liquid, allyl alcohol and N,N'-methylenebis(acrylamide) is used for stabilization of small and highly uniform palladium nanoparticles of 3–4 nm size MXCPILNHG@Pd. This material has been characterized by Fourier-transform infrared spectroscopy (FTIR), atomic adsorption spectroscopy (AAS), thermogravimetric analysis (TGA), transmission electron microscopy (TEM), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), SEM-Map, energy-dispersive X-ray spectroscopy (EDX), X-ray photoelectron spectra (XPS), vibrating-sample magnetometer (VSM) and dynamic light scattering (DLS). According to optimization of cross-linking degree and ratio of DABCO-IL, MXCPILNHG-2@Pd is found as a highly selective catalyst in oxidations of primary alcohols to the corresponding aldehydes in toluene and to acids in water. Furthermore, secondary alcohols were reacted efficiently to the corresponding ketones in both toluene and water. Catalyst is magnetically recovered and recycled for several times in both toluene and water and the reused catalysts are characterized by TEM and XPS. The authors are grateful to Institute for Advanced Studies in Basic Sciences (IASBS) Research Council, Zanjan University and Iran National Science Foundation (INSF-Grant number of 95,844,587) for support of this work. The authors are also thankful to the Spanish Ministerio de Economía, Industria y Competitividad, Agencia Estatal de Investigación (AEI) and Fondo Europeo de Desarrollo Regional (FEDER, EU) (projects CTQ2016-76782-P and CTQ2016-81797-REDC), the Generalitat Valenciana (PROMETEOII/ 2014/017) and the University of Alicante. |
| تدمد: | 0926-860X |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3a2dfaeb42517f690aaeca5e794d50dbTest https://doi.org/10.1016/j.apcata.2018.07.009Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....3a2dfaeb42517f690aaeca5e794d50db |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 0926860X |
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