Activated carbons treated with sulphuric acid: Catalysts for catalytic wet peroxide oxidation

Gomes, Helder; Miranda, Sandra M.; Sampaio, Maria J.; Silva, Adrián M.T.; Faria, Joaquim L.

doi:10.1016/j.cattod.2010.01.017

Cited by 131 publications

(100 citation statements)

References 24 publications

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“…5). This finding is consistent with the results published by Gomes et al who treated activated carbon with sulfuric acid [22]. Interestingly, the corrosion test in 1 M sulfuric acid does not result in the formation of surface functionalities.…”

Section: Resultssupporting

confidence: 93%

Corrosion resistance studies of carbon-encapsulated iron nanoparticles

et al. 2017

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The carbon coating in carbon-encapsulated magnetic nanoparticles is considered as a tight and impermeable barrier which should perfectly protect the magnetic core material from external chemical environment. To study the integrity of the coating, carbon-encapsulated iron nanoparticles were subjected to corrosion tests, in which various corrosion agents were used. Several mineral and organic acids, as well as active gaseous environments with various oxidation potential, were applied. Additionally, the corrosion resistance was studied under the so-called galvanic corrosion, using two metal ions (copper and silver) which have higher redox potential than the zero-valent iron. The release of iron from the core as well as the morphology, structural features, chemical composition, and magnetic properties of carbon-encapsulated iron nanoparticles was systematically monitored at each stage of the corrosion process. The largest release of Fe from the encapsulate core was observed when nitric acid was used as the corrosion agent.

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Section: Resultssupporting

confidence: 93%

Corrosion resistance studies of carbon-encapsulated iron nanoparticles

et al. 2017

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“…The first three catalysts were prepared impregnating the GAC by sequential addition of aqueous solutions of K 3 [Fe(CN) 6 ] and FeSO 4 to produce Prussian Blue (Fe 3 [Fe(CN) 6 ] 2 ) particles in situ, which remain adsorbed onto the support with different iron contents; the influence of the addition order and the repeated impregnation was examined. Alternatively, Prussian Blue nanoparticles (PBNP) were prepared ex-situ and adsorbed onto the GAC.…”

Section: A Catalysts Preparation and Characterizationmentioning

confidence: 99%

“…To start each test, 175 cm 3 of an Orange G (OG) aqueous solution was placed into the reactor. The pH was initially adjusted to the desired value by using 1.0 mol/dm 3 experiments. The catalytic activity was evaluated by measuring discoloration, Total Organic Carbon (TOC) and UV-visible spectra along the reaction time.…”

Section: B Adsorption and Oxidation Experimentsmentioning

confidence: 99%

“…Thus, heterogeneous Fenton or Fenton-like degradation processes appear as a practical way to overcome these limitations. Activated carbons (ACs) have emerged as a good choice for oxidation processes working as catalysts themselves [2], [3] or as catalyst supports [4], [5]. Adsorption and reaction co-exist in heterogeneous AC supports, largely determining the performance of the oxidation process.…”

Section: Introductionmentioning

confidence: 99%

“…The mixed-valence Prussian Blue (Fe 3 [Fe(CN) 6 ] 2 ) (PB) is an inorganic polycrystal with well-known electrochromic and electrocatalytical properties [6]. Recently, [7] showed that the mixture of Prussian blue (iron hexacyanoferrate) colloids and hydrogen peroxide can function as a heterogeneous Fenton reagent.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Prussian Blue onto Activated Carbon as a Catalyst for Heterogeneous Fenton-Like Processes

Doumic¹,

Salierno²,

Cassanello³

et al. 2013

IJCEA

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Removal of thiophene compounds from model fuel with supported copper on active carbon, adsorption kinetics, and isotherms

Kazemi,

Golipour,

Mafi

et al. 2024

Asia-Pacific J Chem Eng

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In this study, the adsorption of thiophene compounds (TCs), including thiophene (T), benzothiophene (BT), and dibenzothiophene (DBT), from model fuels was investigated using modified activated carbon (AC). The model fuel, prepared as a single‐solute model at a concentration of 2000 ppm based on a mixture concentration of 3000 ppm, served as the basis for the adsorption experiments. Additionally, an examination of thiophene adsorption from commercial fuels, specifically kerosene, was conducted. Experimental data were used to calculate correlated parameters of adsorption isotherms, kinetic models, and the Fisher factor. The pseudo‐second‐order model demonstrated the best fit to the experimental data. Notably, the adsorbent consisting of 10% Cu+ supported on acid‐washed activated carbon (A1CN10) exhibited the highest adsorption capacity for TCs, achieving removal percentages of 78%, 96%, and 100% for T, BT, and DBT, respectively. Various methods were employed to investigate the physicochemical properties of the adsorbents, including N2 adsorption–desorption surface analysis (BET), scanning electron microscopy (SEM), X‐ray diffraction (XRD), and energy dispersive spectroscopy (EDS). Furthermore, the regeneration of the adsorbent was studied using two techniques: agitation and ultrasound.

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Activated carbons treated with sulphuric acid: Catalysts for catalytic wet peroxide oxidation

Cited by 131 publications

References 24 publications

Corrosion resistance studies of carbon-encapsulated iron nanoparticles

Corrosion resistance studies of carbon-encapsulated iron nanoparticles

Prussian Blue onto Activated Carbon as a Catalyst for Heterogeneous Fenton-Like Processes

Removal of thiophene compounds from model fuel with supported copper on active carbon, adsorption kinetics, and isotherms

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