Synthesis, Characterization of Magnetic Composites and Testing of Their Activity in Liquid-Phase Oxidation of Phenol with Oxygen
The development and improvement of methods for the synthesis of environmentally friendly catalysts based on base metals is currently an urgent and promising task of modern catalysis. Catalysts based on nanoscale magnetite and maghemite have fast adsorption–desorption kinetics and high chemical activ...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-09-01
|
| Series: | ChemEngineering |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2305-7084/6/5/68 |
| _version_ | 1827651017663053824 |
|---|---|
| author | Binara T. Dossumova Tatyana V. Shakiyeva Dinara Muktaly Larissa R. Sassykova Bedelzhan B. Baizhomartov Sendilvelan Subramanian |
| author_facet | Binara T. Dossumova Tatyana V. Shakiyeva Dinara Muktaly Larissa R. Sassykova Bedelzhan B. Baizhomartov Sendilvelan Subramanian |
| author_sort | Binara T. Dossumova |
| collection | DOAJ |
| description | The development and improvement of methods for the synthesis of environmentally friendly catalysts based on base metals is currently an urgent and promising task of modern catalysis. Catalysts based on nanoscale magnetite and maghemite have fast adsorption–desorption kinetics and high chemical activity. The purpose of this work is to obtain magnetic composites, determine their physicochemical characteristics and verify their activity in the process of liquid-phase oxidation of phenol with oxygen. Magnetic nanocomposites were obtained by chemical co-deposition of salts of ferrous and trivalent iron. The synthesized magnetic composites were studied by X-ray diffractometry, energy dispersive X-ray fluorescence and Mössbauer spectroscopy, IR-Fourier spectroscopy and elemental analysis. To increase the catalytic activity in oxidative processes, the magnetite surfaces were modified using cobalt nitrate salt. Further, CoFe<sub>2</sub>O<sub>4</sub> was stabilized by adding polyethylenimine (PEI) as a surfactant. Preliminary studies of the oxidation of phenol with oxygen, as the most typical environmental pollutant were carried out on the obtained Fe<sub>3</sub>O<sub>4</sub>, CoFe<sub>2</sub>O<sub>4</sub>, CoFe<sub>2</sub>O<sub>4</sub>/PEI catalysts. The spectrum of the reaction product shows the presence of CH in the aromatic ring and double C=C bonds, stretching vibrations of the C=O groups of carbonyl compounds; the band at 3059 cm<sup>−1</sup> corresponds to the presence of double C=C bonds and the band at 3424 cm<sup>−1</sup> to hydroquinone compounds. The band at 1678 cm<sup>−1</sup> and the intense band at 1646 cm<sup>−1</sup> refer to vibrations of the C=O bonds of the carbonyl group of benzoquinone. Peaks at 1366 cm<sup>−1</sup> and 1310 cm<sup>−1</sup> can be related to the vibrations of C–H and C–C bonds of the quinone ring. Thus, it was demonstrated that produced magnetic composites based on iron oxide are quite effective in the oxidation of phenol with oxygen. |
| first_indexed | 2024-03-09T20:28:02Z |
| format | Article |
| id | doaj.art-39ae8c196c5c4b3e8cf6743769affe4d |
| institution | Directory Open Access Journal |
| issn | 2305-7084 |
| language | English |
| last_indexed | 2024-03-09T20:28:02Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | ChemEngineering |
| spelling | doaj.art-39ae8c196c5c4b3e8cf6743769affe4d2023-11-23T23:29:24ZengMDPI AGChemEngineering2305-70842022-09-01656810.3390/chemengineering6050068Synthesis, Characterization of Magnetic Composites and Testing of Their Activity in Liquid-Phase Oxidation of Phenol with OxygenBinara T. Dossumova0Tatyana V. Shakiyeva1Dinara Muktaly2Larissa R. Sassykova3Bedelzhan B. Baizhomartov4Sendilvelan Subramanian5Al-Farabi Kazakh National University, 71, Al-Farabi Avenue, Almaty 050040, KazakhstanAl-Farabi Kazakh National University, 71, Al-Farabi Avenue, Almaty 050040, KazakhstanAl-Farabi Kazakh National University, 71, Al-Farabi Avenue, Almaty 050040, KazakhstanFaculty of Chemistry and Chemical Technology, Al-Farabi Kazakh National University, 71, Al-Farabi Avenue, Almaty 050040, KazakhstanAl-Farabi Kazakh National University, 71, Al-Farabi Avenue, Almaty 050040, KazakhstanDepartment of Mechanical Engineering, Dr. M.G.R. Educational and Research Institute, Chennai 600095, Tamil Nadu, IndiaThe development and improvement of methods for the synthesis of environmentally friendly catalysts based on base metals is currently an urgent and promising task of modern catalysis. Catalysts based on nanoscale magnetite and maghemite have fast adsorption–desorption kinetics and high chemical activity. The purpose of this work is to obtain magnetic composites, determine their physicochemical characteristics and verify their activity in the process of liquid-phase oxidation of phenol with oxygen. Magnetic nanocomposites were obtained by chemical co-deposition of salts of ferrous and trivalent iron. The synthesized magnetic composites were studied by X-ray diffractometry, energy dispersive X-ray fluorescence and Mössbauer spectroscopy, IR-Fourier spectroscopy and elemental analysis. To increase the catalytic activity in oxidative processes, the magnetite surfaces were modified using cobalt nitrate salt. Further, CoFe<sub>2</sub>O<sub>4</sub> was stabilized by adding polyethylenimine (PEI) as a surfactant. Preliminary studies of the oxidation of phenol with oxygen, as the most typical environmental pollutant were carried out on the obtained Fe<sub>3</sub>O<sub>4</sub>, CoFe<sub>2</sub>O<sub>4</sub>, CoFe<sub>2</sub>O<sub>4</sub>/PEI catalysts. The spectrum of the reaction product shows the presence of CH in the aromatic ring and double C=C bonds, stretching vibrations of the C=O groups of carbonyl compounds; the band at 3059 cm<sup>−1</sup> corresponds to the presence of double C=C bonds and the band at 3424 cm<sup>−1</sup> to hydroquinone compounds. The band at 1678 cm<sup>−1</sup> and the intense band at 1646 cm<sup>−1</sup> refer to vibrations of the C=O bonds of the carbonyl group of benzoquinone. Peaks at 1366 cm<sup>−1</sup> and 1310 cm<sup>−1</sup> can be related to the vibrations of C–H and C–C bonds of the quinone ring. Thus, it was demonstrated that produced magnetic composites based on iron oxide are quite effective in the oxidation of phenol with oxygen.https://www.mdpi.com/2305-7084/6/5/68catalystsiron oxidescobaltoxygenoxidationphenol |
| spellingShingle | Binara T. Dossumova Tatyana V. Shakiyeva Dinara Muktaly Larissa R. Sassykova Bedelzhan B. Baizhomartov Sendilvelan Subramanian Synthesis, Characterization of Magnetic Composites and Testing of Their Activity in Liquid-Phase Oxidation of Phenol with Oxygen ChemEngineering catalysts iron oxides cobalt oxygen oxidation phenol |
| title | Synthesis, Characterization of Magnetic Composites and Testing of Their Activity in Liquid-Phase Oxidation of Phenol with Oxygen |
| title_full | Synthesis, Characterization of Magnetic Composites and Testing of Their Activity in Liquid-Phase Oxidation of Phenol with Oxygen |
| title_fullStr | Synthesis, Characterization of Magnetic Composites and Testing of Their Activity in Liquid-Phase Oxidation of Phenol with Oxygen |
| title_full_unstemmed | Synthesis, Characterization of Magnetic Composites and Testing of Their Activity in Liquid-Phase Oxidation of Phenol with Oxygen |
| title_short | Synthesis, Characterization of Magnetic Composites and Testing of Their Activity in Liquid-Phase Oxidation of Phenol with Oxygen |
| title_sort | synthesis characterization of magnetic composites and testing of their activity in liquid phase oxidation of phenol with oxygen |
| topic | catalysts iron oxides cobalt oxygen oxidation phenol |
| url | https://www.mdpi.com/2305-7084/6/5/68 |
| work_keys_str_mv | AT binaratdossumova synthesischaracterizationofmagneticcompositesandtestingoftheiractivityinliquidphaseoxidationofphenolwithoxygen AT tatyanavshakiyeva synthesischaracterizationofmagneticcompositesandtestingoftheiractivityinliquidphaseoxidationofphenolwithoxygen AT dinaramuktaly synthesischaracterizationofmagneticcompositesandtestingoftheiractivityinliquidphaseoxidationofphenolwithoxygen AT larissarsassykova synthesischaracterizationofmagneticcompositesandtestingoftheiractivityinliquidphaseoxidationofphenolwithoxygen AT bedelzhanbbaizhomartov synthesischaracterizationofmagneticcompositesandtestingoftheiractivityinliquidphaseoxidationofphenolwithoxygen AT sendilvelansubramanian synthesischaracterizationofmagneticcompositesandtestingoftheiractivityinliquidphaseoxidationofphenolwithoxygen |