Removal of organic substances from wastewater by liquid-phase oxidation with heterogeneous catalysts

1979 ◽  
Vol 15 (5) ◽  
pp. 364-366
Author(s):  
I. I. Ioffe ◽  
�. V. Rubinskaya ◽  
K. A. Galutkina ◽  
A. G. Nemchenko
Keyword(s):  
Liquid Phase ◽  
Heterogeneous Catalysts ◽  
Liquid Phase Oxidation ◽  
Organic Substances ◽  
Phase Oxidation

Novel solvent free liquid-phase oxidation of β-pinene over heterogeneous catalysts based on Fe3−xMxO4 (M=Co and Mn)

2004 ◽  
Vol 269 (1-2) ◽  
pp. 117-121 ◽  
Author(s):  
Luciano Menini ◽  
Márcio J. da Silva ◽  
Maria F.F. Lelis ◽  
José D. Fabris ◽  
Rochel M. Lago ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Heterogeneous Catalysts ◽  
Solvent Free ◽  
Liquid Phase Oxidation ◽  
Phase Oxidation

Liquid Phase Oxidation of Toluene to Benzaldehyde with Molecular Oxygen over Copper-Based Heterogeneous Catalysts

2005 ◽  
Vol 347 (15) ◽  
pp. 1987-1992 ◽  
Author(s):  
Feng Wang ◽  
Jie Xu ◽  
Xiaoqiang Li ◽  
Jin Gao ◽  
Lipeng Zhou ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Molecular Oxygen ◽  
Heterogeneous Catalysts ◽  
Liquid Phase Oxidation ◽  
Phase Oxidation

Monovacant polyoxometalates incorporated into MIL-101(Cr): novel heterogeneous catalysts for liquid phase oxidation

2013 ◽  
Vol 453 ◽  
pp. 316-326 ◽  
Author(s):  
Carlos M. Granadeiro ◽  
André D.S. Barbosa ◽  
Patrícia Silva ◽  
Filipe A. Almeida Paz ◽  
Vipin K. Saini ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Heterogeneous Catalysts ◽  
Liquid Phase Oxidation ◽  
Phase Oxidation

Research of Liquid Phase Oxidation of Aliphatic Alcohols in Plasma Chemical Water Treatment

2021 ◽  
pp. 92-108
Author(s):  
R.V. Yakushin ◽  
A.V. Chistolinov ◽  
V.S. Boldyrev ◽  
E.N. Ofitserov ◽  
I.N. Solovieva ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Electric Discharge ◽  
Chemical Treatment ◽  
Discharge Plasma ◽  
Aliphatic Alcohols ◽  
Liquid Phase Oxidation ◽  
Organic Substances ◽  
Plasma Chemical ◽  
Glow Discharges ◽  
Phase Oxidation

Plasma chemistry is part of the development of high technology that meets the modern requirements of greening and resource conservation. The study of physic-chemical laws and processes occurring in the zone of action of electric discharge plasma near the surface of a liquid is of high scientific and applied interest. In the study, developed and patented by a team of authors, plasma-chemical reactors were used, which implement the treatment of a liquid with both barrier and glow discharges near the surface of the liquid phase in a flow-through mode. Solutions of primary and secondary aliphatic alcohols were used as a model object of plasma-chemical treatment. As a result of the study, the mechanisms of liquid-phase oxidation of primary and secondary aliphatic alcohols during plasma-chemical treatment of water were proposed. The emission spectra of electric discharges at the gas-liquid interface in the presence of dissolved organic substances were obtained and analyzed. Spectral studies of electrodischarge plasma in the liquid-liquid zone confirmed the differing composition of the inorganic oxidation products of primary and secondary aliphatic alcohols. When deciphering the spectra of barrier and glow discharges, the characteristic emission bands of nitrogen N2, OH-radicals and nitric oxide, as well as lines of atomic hydrogen H and oxygen O were shown. In addition, the effect of the nature of the organic substances contained in the treated water on the characteristics of the electric discharge plasma was shown

Liquid-phase oxidation of tetralin in the presence of heterogeneous catalysts

1975 ◽  
Vol 15 (2) ◽  
pp. 98-106
Author(s):  
A KAMNEVA ◽  
V ZAKHAROVA ◽  
L PITERSKII ◽  
V SELEZNEV ◽  
A ARTEMOV
Keyword(s):  
Liquid Phase ◽  
Heterogeneous Catalysts ◽  
Liquid Phase Oxidation ◽  
Phase Oxidation

scholarly journals Effect of Cerium Precursor in the Synthesis of Ce-MCM-41 and in the Efficiency for Liquid-Phase Oxidation of Benzyl Alcohol

Catalysts ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 377 ◽  
Author(s):  
Carlos M. Aiube ◽  
Karolyne V. de Oliveira ◽  
Julio L. de Macedo
Keyword(s):  
Catalytic Activity ◽  
Liquid Phase ◽  
Benzyl Alcohol ◽  
Heterogeneous Catalysts ◽  
Liquid Phase Oxidation ◽  
Oxidation Of Benzyl Alcohol ◽  
Metal Precursors ◽  
Phase Oxidation ◽  
First Time ◽  
Mcm 41

Understanding the effects of synthetic parameters in the catalytic activity of heterogeneous catalysts is of utmost importance when aiming for optimal reaction conditions. Hence, we disclose in this work the synthesis and characterization of cerium-modified MCM-41 materials. In addition, it was observed for the first time, differences in catalytic activity when using different cerium synthetic precursors: CeCl3·7H2O and Ce(NO3)3·6H2O (Ce-MCM-Cl and Ce-MCM-NO3, respectively). A mechanism for cerium incorporation in MCM-41 was proposed, where [Ce(OH)3] species were hydrogen bonded to silicate anions, forming framework Ce-O-Si bonds during condensation and, consequently, causing distortion of the typical hexagonal mesophase. It was also observed that Ce(OH)3 formed aggregated layers with template assemblies during synthesis, resulting in non-framework CeO2 species on the MCM-41 surface after calcination. These CeO2 species were preferentially formed for Ce-MCM-NO3 and were attributed to the nitrate ions’ strong binding to template molecules. In the solvent free liquid-phase oxidation of benzyl alcohol (BzOH), Ce-MCM-Cl achieved better BzOH conversions and benzaldehyde (BzD) yields, while Ce-MCM-NO3 offered increased BzD selectivity. The catalysts’ reusability was also studied over three catalytic runs, where Ce-MCM-NO3 was more resistant than Ce-MCM-Cl towards deactivation. The observed catalytic behavior shows the importance of metal precursors in the obtainment of materials with desirable final properties.

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