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Environ Technol

Title:		Novel Vanadia/meso-Co(3)O(4) catalysts for the conversion of benzene-toluene-xylene to environmental friendly components via catalytic oxidation
Author(s):		Shamma E; Said S; Riad M; Mikhail S;
Address:		"Egyptian Petroleum Research Institute, Cairo, Egypt"
Journal Title:		Environ Technol
Year:		2023
Volume:		20211128
Issue:		11
Page Number:		1531 - 1548
DOI:		10.1080/09593330.2021.2007288
ISSN/ISBN:		1479-487X (Electronic) 0959-3330 (Linking)
Abstract:		"Three - dimensional meso-porous Co(3)O(4) was prepared by nanocasting pathway based on the use of mesoporous silica (KIT-6) as hard template with different Cobalt concentrations (0.5-2.5 mol ratio based on mesoporous silica KIT-6). The prepared samples was used as supports for preparing V(2)O(5)/Co(3)O(4) (1, 6 wt% of V(2)O(5)) catalysts. The prepared samples were characterized by different techniques. The catalytic activity of the prepared samples were evaluated in the complete oxidation reaction of toluene, benzene, and/or p-xylene; (as model reactants of volatile organic compounds) in terms of CO(2). The catalytic reaction was carried out in a fixed-bed micro-reactor operated under atmospheric pressure and within the reaction temperature range of 200-400 degrees C. The data confirmed that the three dimensional-mesoporous Co(3)O(4) (1.0 mole ratio) replicated sample possessed improved different parameters compared to those of the Co(3)O(4) sample with other mole ratios. The data reflected the yield of Co2 is decreased upon the increase in reaction temperature to 400 degrees C. 1 wt.% V(2)O(5)/m-Co(3)O(4) catalyst shows a reverse direction, the CO(2) yield slowly increased in the range 150-250 degrees C, then jumped at 300 degrees C until maximum yield (100%) is observed at 400 degrees C. 1 wt.% V(2)O(5)/m-Co(3)O(4) catalyst was found to be the active and selective promised catalyst for the complete oxidation of either individual aromatic volatile organic compounds (benzene, toluene, and/or xylene) and/or their mixtures to 100% CO(2)"
Keywords:		*Benzene *Volatile Organic Compounds Toluene Xylenes Carbon Dioxide Catalysis Silicon Dioxide Three dimensional mesoporous silica cobalt oxide oxidation reaction vanadium pentaoxide volatile organic compounds;
Notes:		"MedlineShamma, E Said, S Riad, M Mikhail, S eng England 2021/11/17 Environ Technol. 2023 Apr; 44(11):1531-1548. doi: 10.1080/09593330.2021.2007288. Epub 2021 Nov 28"