Chitosan modified with cobalt(II) as a green catalyst for the oxidation of styrene to styrene oxide | ||
| شیمى کاربردى روز | ||
| Article 5, Volume 13, Issue 48, September 2018, Pages 67-74 PDF (672.62 K) | ||
| Document Type: Original Article | ||
| DOI: 10.22075/chem.2018.2975 | ||
| Authors | ||
| Sajjad Keshipour* 1; Farivar Ahmadi2; Behnam Seyyedi3; Esmaeil Habibi4 | ||
| 1Department of Nanochemistry, Nano Research Center, Urmia University, Urmia, Iran. | ||
| 2Department of nanochemistry, Nano Research Center, Urmia University, Urmia, Iran | ||
| 3Department of nanochemistry, Nano research Center, Urmia University, Urmia, Iran. | ||
| 4Nano-technology research center, urmia university | ||
| Receive Date: 28 March 2017, Revise Date: 08 August 2017, Accept Date: 19 August 2017 | ||
| Abstract | ||
| Chitosan was used as a green support for cobalt(II). Chitosan-cobalt(II) after characterization with common methods including FT-IR, flame atomic absorption spectroscopy, energy dispersive X-ray spectroscopy, X-ray diffraction and thermal gravimetric analysis as a biocompatible heterogeneous catalyst was used in the oxidation reaction of styrene to styrene oxide. The reaction led to the formation of styrene oxide in the presence of the prepared catalyst and excess amounts of hydrogen peroxide as a green oxidant in H2O as the solvent at room temperature during 6 h with 96% yield and high selectivity. Also, the reaction gave high yield in the solvent free conditions. The catalyst is recyclable for six times without any significant decreases in the activity. | ||
| Keywords | ||
| Chitosan; Oxidation; Cobalt; Heterogeneous catalyst; Styrene; Green chemistry | ||
| References | ||
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