Gas-Phase Total Oxidation of Benzene, Toluene, Ethylbenzene, and Xylenes Using Shape-Selective Manganese Oxide and Copper Manganese Oxide Catalysts

Genuino, Homer C.; Dharmarathna, Saminda; Njagi, Eric C.; Mei, Michael C.; Suib, Steven L.

doi:10.1021/jp301342f

Cited by 245 publications

(130 citation statements)

References 66 publications

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“…A major O 2 loss from both of the materials was observed (532 • C for UCT-1 and 570 • C for UCT-18-Cs) in the O 2 -TPD (Fig. 5C), which can be ascribed to the loss of lattice oxygen near the surface of the material [38].…”

Section: Metalmentioning

confidence: 94%

Ion induced promotion of activity enhancement of mesoporous manganese oxides for aerobic oxidation reactions

Biswas

Poyraz

Meng

et al. 2015

Applied Catalysis B: Environmental

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a b s t r a c tInverse micelle templated mesoporous manganese oxide (University of Connecticut mesoporous material, UCT-1) and ion promoted mesoporous manganese oxides (UCT-18-X, X = Mg 2+ , Ca 2+ , K + , Na + and Cs + ) having trace amount of alkali metal ions as promoters with tunable porosity and crystallinity were synthesized. The synthesis was based on the use of inverse micelles as soft templates and unique NO x chemistry as established for recently discovered UCT materials. The materials were tested for selective aerobic alcohol oxidation and the catalytic activity followed the order of UCT-1 < UCT-18-Mg < UCT-18-Ca < UCT-18-K < UCT-18-Na < UCT-18-Cs. The catalytic activity was correlated to the promoter ion induced increase in basicity of the materials. The retention of an amorphous structure, low reducibility, and the effects of lattice oxygen are other key factors responsible for the enhanced catalytic activity. The UCT-18-Cs catalyst was found to oxidize various alcohols to corresponding aldehydes and ketones selectively (100% selectivity) with very high conversion (as high as 100%). The UCT-18-Cs also exhibited solvent free green oxidation of 1.3.5-trimethylbenzene to yield 3,5-dimethylbenzoic acid and (3,5-dimethylphenyl)methyl ester with >90% conversion and 90% selectivity for the acid and 9% selectivity for the ester.

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Section: Metalmentioning

confidence: 94%

Ion induced promotion of activity enhancement of mesoporous manganese oxides for aerobic oxidation reactions

Biswas

Poyraz

Meng

et al. 2015

Applied Catalysis B: Environmental

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“…These organic compounds were chosen as model compounds to be used in this study due to their action as greenhouse gases and their toxic, carcinogenic and molecular characteristics (Wu et al, 2011;Genuino et al, 2012). The effect of the cobalt content on the textural properties of the catalysts and on the catalytic performance was also investigated.…”

Section: Brazilian Journal Of Chemical Engineeringmentioning

confidence: 99%

Catalytic oxidation of volatile organic compounds (n-hexane, benzene, toluene, o-xylene) promoted by cobalt catalysts supported on γ-Al2O3-CeO2

Balzer

Probst

Drago

et al. 2014

Braz. J. Chem. Eng.

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-Cobalt catalysts supported on γ-alumina, ceria and γ-alumina-ceria, with 10 or 20%wt of cobalt load, prepared by the wet impregnation method and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), field emission transmission electron microscopy (FETEM), N 2 adsorptiondesorption isotherms (BET/BJH methods), energy-dispersive X-ray spectroscopy (EDX), X-ray photoemission spectroscopy (XPS), O 2 -chemisorption and temperature programmed reduction (TPR) were used to promote the oxidation of volatile organic compounds (n-hexane, benzene, toluene and o-xylene). For a range of low temperatures (50-350 °C), the activity of the catalysts with a higher cobalt load (20% wt) was greater than that of the catalysts with a lower cobalt load (10% wt). The Co/γ-Al 2 O 3 -CeO 2 catalytic systems presented the best performances. The results obtained in the characterization suggest that the higher catalytic activity of the Co 20 /γ-Al 2 O 3 -CeO 2 catalyst may be attributed to the higher metal content and amount of oxygen vacancies, as well as the effects of the interaction between the cobalt and the alumina and cerium oxides.

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“…It has been found that less expensive materials such as Mn-oxide, Cu-oxide and Ni-oxide can also show substantially high activity towards oxidation of VOCs [16,[20][21][22][23][24][25]. There are some materials, which are generally known to be catalytically less reactive; however, there can be a drastic increase in the catalytic activity as the materials exist in the form of very thin film or nanoparticles less than 5 nm in diameter [11,13,15].…”

Section: Introductionmentioning

confidence: 99%

Toluene oxidation catalyzed by NiO/SiO2 and NiO/TiO2/SiO2: Towards development of humidity-resistant catalysts

et al. 2016

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Gas-Phase Total Oxidation of Benzene, Toluene, Ethylbenzene, and Xylenes Using Shape-Selective Manganese Oxide and Copper Manganese Oxide Catalysts

Abstract: Figure S1. Schematic diagram of the catalytic performance set-up for gas-phase VOC total oxidation. Relative Intensity (a.u.) 70 60 50 40 30 20 10

Cited by 245 publications

References 66 publications

Ion induced promotion of activity enhancement of mesoporous manganese oxides for aerobic oxidation reactions

Ion induced promotion of activity enhancement of mesoporous manganese oxides for aerobic oxidation reactions

Catalytic oxidation of volatile organic compounds (n-hexane, benzene, toluene, o-xylene) promoted by cobalt catalysts supported on γ-Al2O3-CeO2

Toluene oxidation catalyzed by NiO/SiO2 and NiO/TiO2/SiO2: Towards development of humidity-resistant catalysts

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