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Vol. 28 No. 7 (2016): Vol 28 Issue 7

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Synthesis, Characterization and Catalytic Activity of Manganese(II)-Cobalt(II) Complexes Anchored SBA-16 for Liquid Phase Oxidation of p-Xylene

https://doi.org/10.14233/ajchem.2016.19726
Pham Xuan Nui
Department of Chemical Engineering, Hanoi University of Mining and Geology, Duc Thang, Tu Liem North, Hanoi, Vietnam
Nguyen Nho Dung
Department of Chemistry, Hue Science College, Hue University,77 Nguyen Hue Street, Hue City, Vietnam
Tran Thi Van Thi
Department of Chemistry, Hue Science College, Hue University,77 Nguyen Hue Street, Hue City, Vietnam

Corresponding Author(s) : Pham Xuan Nui

phamxuannui@gmail.com

Asian Journal of Chemistry, Vol. 28 No. 7 (2016): Vol 28 Issue 7

Abstract

In this study, the results of synthesis and modified mesoporous surface of SBA-16 by using Schiff-base complexes [Co(II)-Mn(II)-Sal-APTES] were presented. Manganese(II) and cobalt(II)-Schiff bases complexes were synthesized by reaction between salicylaldehyde (Sal) and 3-aminopropyl triethoxy silane (APTES) in ethanol solution to form Schiff-base ligands. The Co(II)-Mn(II)-Sal-APTES-SBA-16 catalysts were analyzed by a series of analytical methods such as UV-Vis-DRS,XRD, N2 sorption isotherm, FT-IR, TGA-DTA, XPS and TEM. The results showed that the synthesized catalyst remains the pore size of SBA-16 after the covalent anchoring of Co(II)-Mn(II)-Sal-APTES complex over SBA-16 support. This catalyst was examined in the liquid phase oxidation of p-xylene using H2O2 as an oxidant. The catalytic activity was examined by the liquid phase oxidation of p-xylene using H2O2 as an oxidant. It was found that catalyst show higher catalytic activity for the liquid phase oxidation of p-xylene. The combination of cobalt(II) and manganese(II) complexes to afford Co(II)-Mn(II)-APTES-SBA-16 catalyst enhances the response performance and product selectivity significantly oriented to terephthalic acid product.

Keywords

Surfaces Co(II)-Mn(II)-Sal-APTES Thermogravimetric analysis X-ray diffraction Catalytic properties
Nui, P. X., Dung, N. N., & Van Thi, T. T. (2016). Synthesis, Characterization and Catalytic Activity of Manganese(II)-Cobalt(II) Complexes Anchored SBA-16 for Liquid Phase Oxidation of p-Xylene. Asian Journal of Chemistry, 28(7), 1486–1492. https://doi.org/10.14233/ajchem.2016.19726
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