Gold nanoparticles supported on modified red mud for biphasic oxidation of sulfur compounds: A synergistic effect

Oliveira, Aline Silva de; Costa, Demétrio A. S.; Teixeira, Ivo F.; Moura, Flávia C.C.

doi:10.1016/j.apcatb.2014.07.003

Cited by 44 publications

(8 citation statements)

References 39 publications

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“…In addition, Cr 6+ was diminished and collected in the form of Cr 3+ on the surface with the addition of RM/carbon. Scanning electron microscopy (SEM)-EDS showed that Cr-Fe hydroxides are first co-precipitated, and their typical morphological characteristics are shown in Figure 3B [43]. In addition, the pH is increased from 3.0 to 6.8 of the solution with Cr 6+ removal ( Figure 3C).…”

Section: Removal Of Chromium (Cr)mentioning

confidence: 97%

Application of Red Mud in Wastewater Treatment

Wang

Lyu

et al. 2019

Minerals

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Red mud (RM) is an industrial waste produced in large amounts during alumina extraction from bauxite. Its disposal generates serious environmental pollution due to high alkalinity. Therefore, a strategy for the effective utilization of RM must be developed. For instance, RM may be transformed into useful products, such as adsorbents. Given its high concentrations of aluminum oxides, iron oxides, titanium oxides, silica oxides, and hydroxides, RM may be developed as a cheap adsorbent for the removal of various ions from aqueous solution and soils (e.g., metal and non-metal ions, phenolic compounds, and dyes) and waste gas purification (sulfide and carbide). This review summarizes the background, properties, and applications of RM as an adsorbent. Proper approaches of removing metal and non-metal elements from wastewater are also systematically reviewed and compared. Emphasis is placed on the surface modification of RM to obtain high adsorption. Finally, the scope for future research in this area for RM is discussed in depth.

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Section: Removal Of Chromium (Cr)mentioning

confidence: 97%

Application of Red Mud in Wastewater Treatment

Wang

Lyu

et al. 2019

Minerals

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“…28. 216 Removing the barriers in the synthesis of bulk crystalline tungsten nitride (W 2 N) through combined pyrolysis of HPW and polyaniline at $1073 K, N. A. Khan et al prepared crystalline W 2 N@porous carbon which displays excellent ODS activity with a faster DBT conversion rate (1.1 Â 10 À1 min À1 ) in the presence of H 2 O 2 at 333 K. 217 L. Wu et al carried out ODS just using two-layer SiO 2 gels as the catalyst without the addition of any common catalyst using cumene hydroperoxide as the oxidant (Fig. 29a).…”

Section: Other Catalystsmentioning

confidence: 99%

A comprehensive review on oxidative desulfurization catalysts targeting clean energy and environment

et al. 2020

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“…rGO = reduced GO. The highest removal rate of DBT was attained with the catalyst containing a carbon coating due to the amphiphilic characteristics (removal of ~4.5 mg S g cat −1 ) [160] Th, BT and DBT in n-Heptane ([S] 0 = 500 ppm) C 3 N 2 H 5 @H 3 PMo 12 O 40 @CS ACN V fuel = 50 mL, m cat = 0.1 g, V oxidant = 3 mL (H 2 O 2 /acetic acid), T = 30-35 • C, t = 1 h. 2-step process >96% removal of S was possible depending on the condition applied.…”

Section: Amphiphilic Carbonsmentioning

confidence: 99%

Carbon-Based Materials for Oxidative Desulfurization and Denitrogenation of Fuels: A Review

et al. 2021

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Sulfur (S) and nitrogen (N) are elements naturally found in petroleum-based fuels. S- and N-based compounds in liquid fuels are associated with a series of health and environmental issues. Thus, legislation has become stricter worldwide regarding their content and related emissions. Traditional treatment systems (namely hydrodesulfurization and hydrodenitrogenation) fail to achieve the desired levels of S and N contents in fuels without compromising combustion parameters. Thus, oxidative treatments (oxidative desulfurization–ODS, and oxidative denitrogenation-ODN) are emerging as alternatives to producing ultra-low-sulfur and nitrogen fuels. This paper presents a thorough review of ODS and ODN processes applying carbon-based materials, either in hybrid forms or as catalysts on their own. Focus is brought to the role of the carbonaceous structure in oxidative treatments. Furthermore, a special section related to the use of amphiphilic carbon-based catalysts, which have some advantages related to a closer interaction with the oily and aqueous phases, is discussed.

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Gold nanoparticles supported on modified red mud for biphasic oxidation of sulfur compounds: A synergistic effect

Cited by 44 publications

References 39 publications

Application of Red Mud in Wastewater Treatment

Application of Red Mud in Wastewater Treatment

A comprehensive review on oxidative desulfurization catalysts targeting clean energy and environment

Carbon-Based Materials for Oxidative Desulfurization and Denitrogenation of Fuels: A Review

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