Low temperature aqueous phase catalytic oxidation of phenol

Atwater, James E.; Akse, James R.; McKinnis, Jeffrey A.; Thompson, John O.

doi:10.1016/s0045-6535(96)00362-1

Cited by 32 publications

(20 citation statements)

References 9 publications

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“…Using bimetallic Ru-Pt/C catalyst, Atwater et al [135,136] studied the CWAO of a broad variety of low molecular weight polar compounds found in very low concentrations within humidity condensates, urine distillates and crew personal hygiene wastewaters. The selected model contaminants included alcohols, diols, carboxylic acids, urea and thiourea (see table 5).…”

Section: Carboxylic Acidsmentioning

confidence: 99%

Carbon materials and catalytic wet air oxidation of organic pollutants in wastewater

et al. 2005

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Section: Carboxylic Acidsmentioning

confidence: 99%

Carbon materials and catalytic wet air oxidation of organic pollutants in wastewater

et al. 2005

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“…This catalyst was prepared by sequential impregnation of the support with aqueous noble metal salts, followed by thermal reduction to the metallic state. Details of catalyst preparation are presented elsewhere [12,13]. Two forms of SiC/C catalyst were prepared in which the coating process was conducted either before or after impregnation of the support with the noble metals.…”

Section: Methodsmentioning

confidence: 99%

“…Two forms of SiC/C catalyst were prepared in which the coating process was conducted either before or after impregnation of the support with the noble metals. Silicon carbide coating was conducted, using methods which have been discussed in detail in previous publications [19,20]. RP-121/ SC was produced using silicon carbide coated BS-580-26 support material, via methods which were otherwise identical to those for RP-121.…”

Section: Methodsmentioning

confidence: 99%

“…The bimetallic noble metal catalyst, RP-121, was shown to effectively promote the deep oxidation of benzene, phenol, trichloroethylene, and methylene blue [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

“…Silicon carbide (b-SiC) was produced at the carbon surface upon reaction with gaseous silicon monoxide in an inert carrier gas stream [18]. Initial coating runs were performed in a tube furnace [19], and then later more extensive investigations were conducted which resulted in the development of highly effective fluidized bed chemical vapor deposition methods [20]. Herein we report the initial characterization of the catalytic oxidation activity of the b-SiC coated activated carbon bimetallic noble metal catalyst.…”

Section: Introductionmentioning

confidence: 99%

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Deep oxidation of aqueous organics over a silicon carbide-activated carbon supported platinum–ruthenium bimetallic catalyst

Akse

Atwater

2005

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In previous work, we developed a highly active bimetallic platinum-ruthenium catalyst supported on a very high surface area activated carbon substrate. In fixed bed reactors, this catalyst proved capable of the continuous long-term deep oxidation of a variety of aqueous organic contaminants associated with spacecraft wastewater streams at 121°C. This work was extended to the mineralization of more typical environmental contaminants, including halocarbons and aromatics. The primary weakness of this catalyst was the tendency toward relatively high rates of chemical decomposition. To overcome this limitation, methods were developed for the production of a silicon carbide coating over the surface of the activated carbon, yielding a reasonable trade-off between increasing resilience and decreasing surface area. Here we report the catalytic decomposition of dissolved organic contaminants at 130°C using this silicon carbide/activated carbon supported bimetallic catalyst.

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Electrochemical conversion of phenolic wastewater on carbon electrodes in the presence of NaCl

Körbahti

Salih

Tanyolaç

2001

J of Chemical Tech & Biotech

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The electrochemical conversion of highly concentrated synthetic phenolic wastewater was studied on carbon electrodes in a batch electrochemical reactor. The effects of reaction temperature, electrolyte concentration, current density and initial phenol concentration on phenol conversion were elucidated. The wastewater was synthetically prepared and used in reactions carried out generally at 25°C with an initial phenol concentration of 3500 mg dm À3. Although current density increased, phenol conversion% and initial phenol conversion rate did not increase correspondingly above 35°C and an electrolyte concentration of 90 g dm À3 .As the voltage values applied were increased, the increasing current density resulted in fast phenol conversion. Kinetic investigations denoted that overall phenol destruction kinetics was of zero order with an activation energy of 10.9 kJ mol À1 . Under appropriate conditions, phenol was completely converted within 15 min for an initial phenol concentration of 98 mg dm À3 while 8 h was required to gain 95% conversion using 4698 mg dm À3. Solid polymeric materials were produced at initial phenol concentrations above 500 mg dm À3 using the appropriate current density. In the reaction medium, only mono-, di-and tri-substituted chlorophenols were formed and 100% of all species were either oxidised or contributed to the formation of a polymeric structure. Almost all of the phenol loaded to the reactor was converted into non-passivating polymeric products, denoting a safe and easy method for the separation of phenol.

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Low temperature aqueous phase catalytic oxidation of phenol

Cited by 32 publications

References 9 publications

Carbon materials and catalytic wet air oxidation of organic pollutants in wastewater

Carbon materials and catalytic wet air oxidation of organic pollutants in wastewater

Deep oxidation of aqueous organics over a silicon carbide-activated carbon supported platinum–ruthenium bimetallic catalyst

Electrochemical conversion of phenolic wastewater on carbon electrodes in the presence of NaCl

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