NDLI: Metal-Loaded Mesoporous MCM-41 for the Catalytic Wet Peroxide Oxidation (CWPO) of Acetaminophen

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Metal-Loaded Mesoporous MCM-41 for the Catalytic Wet Peroxide Oxidation (CWPO) of Acetaminophen

Content Provider	MDPI
Author	Hachemaoui, Mohammed Molina, Carmen Belver, Carolina Bedia, Jorge Mokhtar, Adel Hamacha, Rachida Boukoussa, Bouhadjar
Copyright Year	2021
Description	MCM-41 based catalysts (molar ratio Si/Al = 40) were prepared by a hydrothermal route, modified by ionic exchange with different metals (Cu, Cr, Fe and Zn) and finally calcined at 550 °C. The catalysts were fully characterized by different techniques that confirmed the formation of oxides of the different metals on the surfaces of all materials. Low-angle X-ray diffraction (XRD) analyses showed that calcination resulted in the incorporation of metallic Zn, Fe and Cr in the framework of MCM-41, while in the case of Cu, thin layers of CuO were formed on the surface of MCM-41. The solids obtained were tested in the catalytic wet peroxide oxidation (CWPO) of acetaminophen at different temperatures (25–55 °C). The activity followed the order: Cr/MCM-41 ≥ Fe/MCM-41 > Cu/MCM-41 > Zn/MCM-41. The increase of the reaction temperature improved the performance and activity of Cr/MCM-41 and Fe/MCM-41 catalysts, which achieved complete conversion of acetaminophen in short reaction times (15 min in the case of Cr/MCM-41). Fe/MCM-41 and Cr/MCM-41 were submitted to long-term experiments, being the Fe/MCM-41 catalyst the most stable with a very low metal leaching. The leaching results were better than those previously reported in the literature, confirming the high stability of Fe/MCM-41 catalysts synthesized in this study.
Starting Page	219
e-ISSN	20734344
DOI	10.3390/catal11020219
Journal	Catalysts
Issue Number	2
Volume Number	11
Language	English
Publisher	MDPI
Publisher Date	2021-02-07
Access Restriction	Open
Subject Keyword	Catalysts Water Science and Technology Mesoporous Materials Al-mcm-41 Metal Loaded Cwpo Acetaminophen Stability
Content Type	Text
Resource Type	Article

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