Kinetic and wet oxidation of phenol catalyzed by non-promoted and potassium-promoted manganese/cerium oxide

Santiago, Aristides Felipe J.; Sousa, João Fernandes de; Guedes, Rodrigo; Jeronimo, Carlos Enrique; Benachour, Mohand

doi:10.1016/j.jhazmat.2006.05.118

Cited by 33 publications

(42 citation statements)

References 15 publications

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“…These compounds are harmful to human health, and suspected to be carcinogens. Many techniques including physical adsorption [3][4][5][6][7][8], electrochemical oxidation [9][10][11], biodegradation [12][13][14], catalytic wet oxidation [15][16][17], and Fenton reagent oxidation [18][19][20] have been adopted for the removal of phenolic and aniline pollutants. Though practicable and effective these methods are, they also have some drawbacks, such as high cost, incomplete removal, more toxic byproducts than original pollutants.…”

Section: Introductionmentioning

confidence: 99%

Superparamagnetic Fe3O4 nanoparticles as catalysts for the catalytic oxidation of phenolic and aniline compounds

Zhang

Zhao

Niu

et al. 2009

Journal of Hazardous Materials

407

180

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a b s t r a c tFe 3 O 4 magnetic nanoparticles (MNPs) with diameters about 10 nm were synthesized successfully and used to remove phenol and aniline from aqueous solution. The results showed that phenol and aniline could be eliminated easily from solution under acidic and neutral conditions in the presence of MNPs and H 2 O 2 . When the concentrations of Fe 3 O 4 MNPs and H 2 O 2 were 5 g L −1 and 1.2 M, respectively, phenol and aniline could be removed completely after 6 h of reaction at 308 K, and the total organic carbon (TOC) abatement efficiency for phenol and aniline were 42.79% and 40.38%. Some intermediates such as formic acid, acetic acid, fumaric acid and hydroquinone were detected during reaction. Fe 3 O 4 MNPs exhibited good stability and reusability, also showed excellent catalysis ability to eliminate some substituted phenolic and aniline compounds from solution. Fe 3 O 4 MNPs had good superparamagnetism and was readily separated from solution by applying an external magnetic field. Finally we proposed that phenol and aniline might be degraded by the hydroxyl free radicals (·OH) released from H 2 O 2 in the presence of Fe 3 O 4 MNPs as catalysts.

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Section: Introductionmentioning

confidence: 99%

Superparamagnetic Fe3O4 nanoparticles as catalysts for the catalytic oxidation of phenolic and aniline compounds

Zhang

Zhao

Niu

et al. 2009

Journal of Hazardous Materials

407

180

View full text Add to dashboard Cite

show abstract

“…Recently, studies of manganese oxide as catalyst in the CWAO process have received significant attention [13][14][15]. Moreover, Mn(II) iron solution [16], Mn(III)-substituted polyoxometalates [3] and Mn(IV) complex [17,18] are known to show interesting activities in the oxygen delignification of the bleaching process of pulps.…”

Section: Introductionmentioning

confidence: 99%

Perovskite-type Oxide LaMnO3: An Efficient and Recyclable Heterogeneous Catalyst for the Wet Aerobic Oxidation of Lignin to Aromatic Aldehydes

et al. 2008

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The perovskite-type oxide catalyst LaMnO 3 prepared by the sol-gel method was found to be an efficient heterogeneous and recyclable catalyst for the wet aerobic oxidation of lignin to aromatic aldehydes. The lignin conversion rate and the yield of each aromatic aldehyde were enhanced significantly by the catalytic process as compared with the non-catalyzed process. Moreover, the activity, specific surface area and perovskite-type structure of the LaMnO 3 catalyst remained nearly unchanged after five successive recycles of catalytic reactions.

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“…In order to improve the conditions of such a process, homogenous and heterogeneous catalysts [1][2][3][4][5][6][7][8][9][10][11] were used. Catalytic wet air oxidation (CWAO) is an efficient technique to eliminate organic compounds such as phenols but reaction is performed at high operating pressure (1-10 MPa) and temperature (80-200 • C) makes investment rather costly.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the catalytic wet peroxide oxidation of phenol over different types of Cu/ZSM-5 catalyst

Valkaj

Katović

Zrnčević

2007

Journal of Hazardous Materials

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Kinetic and wet oxidation of phenol catalyzed by non-promoted and potassium-promoted manganese/cerium oxide

Cited by 33 publications

References 15 publications

Superparamagnetic Fe3O4 nanoparticles as catalysts for the catalytic oxidation of phenolic and aniline compounds

Superparamagnetic Fe3O4 nanoparticles as catalysts for the catalytic oxidation of phenolic and aniline compounds

Perovskite-type Oxide LaMnO3: An Efficient and Recyclable Heterogeneous Catalyst for the Wet Aerobic Oxidation of Lignin to Aromatic Aldehydes

Investigation of the catalytic wet peroxide oxidation of phenol over different types of Cu/ZSM-5 catalyst

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