Synthesis, characterisation and catalytic activity of dithiocarbazate Schiff base complexes in oxidation of cyclohexane
Schiff base complexes of transition metals can be used for catalytic oxidation of hydrocarbons in the presence of tert-butyl hydroperoxide (TBHP). In this work, metal complexes of dithiocarbazate Schiff bases (abbreviated as NiSBdiAP, CuSBdiAP, CoSBdiAP, FeSBdiAP, MnSBdiAP and ZnSBdiAP, in which SBd...
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| Format: | Article |
| Language: | English |
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Elsevier
2017
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| Online Access: | http://psasir.upm.edu.my/id/eprint/63369/ http://psasir.upm.edu.my/id/eprint/63369/1/Synthesis%2C%20characterisation%20and%20catalytic%20activity%20of%20dithiocarbazate%20Schiff%20base%20complexes%20in%20oxidation%20of%20cyclohexane.pdf |
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| author | Alshaheri, Ali Ahmed Tahir, Mohamed Ibrahim Mohamed Rahman, Mohd Basyaruddin Abdul Begum, Thahira Saleh, Tawfik A. |
| author_facet | Alshaheri, Ali Ahmed Tahir, Mohamed Ibrahim Mohamed Rahman, Mohd Basyaruddin Abdul Begum, Thahira Saleh, Tawfik A. |
| author_sort | Alshaheri, Ali Ahmed |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Schiff base complexes of transition metals can be used for catalytic oxidation of hydrocarbons in the presence of tert-butyl hydroperoxide (TBHP). In this work, metal complexes of dithiocarbazate Schiff bases (abbreviated as NiSBdiAP, CuSBdiAP, CoSBdiAP, FeSBdiAP, MnSBdiAP and ZnSBdiAP, in which SBdiAP represents the Schiff base) were synthesized and characterized using several techniques; Fourier transforms infrared spectroscopy, nuclear magnetic resonance, 1H NMR and 13C NMR, magnetic susceptibility measurements, molar conductivity, ultraviolet-visible spectroscopy, and inductively coupled plasma spectrometry. The oxidation of cyclohexane by the prepared metal complexes as catalysts was investigated in the presence of TBHP as an oxidative source under mild conditions. The product was analyzed using gas chromatography. It was found that cyclohexanol and cyclohexanone were the main products of the oxidation reaction. The iron complex of Schiff base derived from 2,6-diacetyl pyridine and S-benzyldithiocarbazate showed the highest activity during the screening studies towards cyclohexane oxidation. The results showed that the time of the reaction, temperature, and the concentration of TBHP and the catalyst type influenced the selectivity and conversion of cyclohexane oxidation. The selectivity of the reaction was 96% indicating the significance of the work toward industrial oxidation of cyclohexane. |
| first_indexed | 2025-11-15T11:15:10Z |
| format | Article |
| id | upm-63369 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T11:15:10Z |
| publishDate | 2017 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-633692018-10-15T03:02:43Z http://psasir.upm.edu.my/id/eprint/63369/ Synthesis, characterisation and catalytic activity of dithiocarbazate Schiff base complexes in oxidation of cyclohexane Alshaheri, Ali Ahmed Tahir, Mohamed Ibrahim Mohamed Rahman, Mohd Basyaruddin Abdul Begum, Thahira Saleh, Tawfik A. Schiff base complexes of transition metals can be used for catalytic oxidation of hydrocarbons in the presence of tert-butyl hydroperoxide (TBHP). In this work, metal complexes of dithiocarbazate Schiff bases (abbreviated as NiSBdiAP, CuSBdiAP, CoSBdiAP, FeSBdiAP, MnSBdiAP and ZnSBdiAP, in which SBdiAP represents the Schiff base) were synthesized and characterized using several techniques; Fourier transforms infrared spectroscopy, nuclear magnetic resonance, 1H NMR and 13C NMR, magnetic susceptibility measurements, molar conductivity, ultraviolet-visible spectroscopy, and inductively coupled plasma spectrometry. The oxidation of cyclohexane by the prepared metal complexes as catalysts was investigated in the presence of TBHP as an oxidative source under mild conditions. The product was analyzed using gas chromatography. It was found that cyclohexanol and cyclohexanone were the main products of the oxidation reaction. The iron complex of Schiff base derived from 2,6-diacetyl pyridine and S-benzyldithiocarbazate showed the highest activity during the screening studies towards cyclohexane oxidation. The results showed that the time of the reaction, temperature, and the concentration of TBHP and the catalyst type influenced the selectivity and conversion of cyclohexane oxidation. The selectivity of the reaction was 96% indicating the significance of the work toward industrial oxidation of cyclohexane. Elsevier 2017-08 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/63369/1/Synthesis%2C%20characterisation%20and%20catalytic%20activity%20of%20dithiocarbazate%20Schiff%20base%20complexes%20in%20oxidation%20of%20cyclohexane.pdf Alshaheri, Ali Ahmed and Tahir, Mohamed Ibrahim Mohamed and Rahman, Mohd Basyaruddin Abdul and Begum, Thahira and Saleh, Tawfik A. (2017) Synthesis, characterisation and catalytic activity of dithiocarbazate Schiff base complexes in oxidation of cyclohexane. Journal of Molecular Liquids, 240. pp. 486-496. ISSN 0167-7322; ESSN: 1873-3166 https://www.sciencedirect.com/science/article/pii/S0167732217314903 10.1016/j.molliq.2017.05.081 |
| spellingShingle | Alshaheri, Ali Ahmed Tahir, Mohamed Ibrahim Mohamed Rahman, Mohd Basyaruddin Abdul Begum, Thahira Saleh, Tawfik A. Synthesis, characterisation and catalytic activity of dithiocarbazate Schiff base complexes in oxidation of cyclohexane |
| title | Synthesis, characterisation and catalytic activity of dithiocarbazate Schiff base complexes in oxidation of cyclohexane |
| title_full | Synthesis, characterisation and catalytic activity of dithiocarbazate Schiff base complexes in oxidation of cyclohexane |
| title_fullStr | Synthesis, characterisation and catalytic activity of dithiocarbazate Schiff base complexes in oxidation of cyclohexane |
| title_full_unstemmed | Synthesis, characterisation and catalytic activity of dithiocarbazate Schiff base complexes in oxidation of cyclohexane |
| title_short | Synthesis, characterisation and catalytic activity of dithiocarbazate Schiff base complexes in oxidation of cyclohexane |
| title_sort | synthesis, characterisation and catalytic activity of dithiocarbazate schiff base complexes in oxidation of cyclohexane |
| url | http://psasir.upm.edu.my/id/eprint/63369/ http://psasir.upm.edu.my/id/eprint/63369/ http://psasir.upm.edu.my/id/eprint/63369/ http://psasir.upm.edu.my/id/eprint/63369/1/Synthesis%2C%20characterisation%20and%20catalytic%20activity%20of%20dithiocarbazate%20Schiff%20base%20complexes%20in%20oxidation%20of%20cyclohexane.pdf |