Surface modification of activated carbon for adsorption of SO2 and NOX: A review of existing and emerging technologies

Abdul-Rahman, Alias; Jalil, Aishah Abdul; Triwahyono, Sugeng; Zaini, Muhammad Abbas Ahmad; Gambo, Yahya; Ibrahim, Mastura

doi:10.1016/j.rser.2018.07.011

Cited by 180 publications

(74 citation statements)

References 197 publications

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“…FTIR spectroscopy is an effective means for assessment of surface chemical species . Surface acidity of as‐synthesised catalysts was further examined by in situ FTIR pyridine analysis as shown in Figure S1.…”

Section: Resultsmentioning

confidence: 99%

Fibrous spherical Ni‐M/ZSM‐5 (M: Mg, Ca, Ta, Ga) catalysts for methane dry reforming: The interplay between surface acidity‐basicity and coking resistance

et al. 2020

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A highly active and robust fibrous spherical ZSM-5-supported nickel catalyst with different promoters (Mg, Ca, Ta, Ga) have been synthesised by microemulsion method for dry reforming of methane (DRM). The structural framework provided by the unique fibrous spherical ZSM-5 aided confinement of Ni particles. Catalytic activity was improved by homogenous distribution of surface acid-basic sites, thereby reducing the propensity of coke deposition.Bimetallic Ni-Ta catalyst produced the highest CH 4 and CO 2 conversions at 93% and 98%, respectively, with H 2 /CO ratio closer to unity (0.97). The nature of acid sites and bimetallic Ni-Ta synergism amplified interaction of catalyst components, resulting in improved interaction with the reactants, thus impeding metal sintering and coke deposition. Consequently, the Ni-Ta/FZSM-5 catalyst shows long-term activity (80 hours) for the DRM reaction at 800 C. K E Y W O R D Sdry reforming, methane, Ni/ZSM-5, nickel, tantalum

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Section: Resultsmentioning

confidence: 99%

Fibrous spherical Ni‐M/ZSM‐5 (M: Mg, Ca, Ta, Ga) catalysts for methane dry reforming: The interplay between surface acidity‐basicity and coking resistance

et al. 2020

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“…• Relative humidity for the gas phase Activated carbon performed in a better way for nitric oxide (NO) conversion and adsorption in dry conditions. Conversion can be compacted up to zero if the relative humidity increased by 50% [56]. The moisture contents decrease the catalytic adsorption of the NO on activated carbon by lodging the oxidation sites, which reduce the efficiency of the NO conversion [57].…”

Section: • Ph Valuementioning

confidence: 99%

Analysis on Preparation, Application, and Recycling of Activated Carbon to Aid in COVID-19 Protection

Reza

Hasan

Afroze

et al. 2020

IJIE

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Activated carbon (AC) is an extremely porous carbonaceous adsorptive substance which has a rigid carbon matrix with high surface area and broad functional groups. The structure is connected by chemical bonds; arranged irregularly, generating a highly porous arrangement of corners, crevices, claps, and cracks between the carbon layers. Activated carbons are produced high-temperature and chemical activation of waste biomass. The pores in the lattice network of activated carbon permit the removal of impurities from gaseous and liquid medium through adsorption. At present, the COVID-19 disease is the prime concern around the whole world because of its exponential infections and death rate. There is no medicine for this virus, and protection is the only remedy to survive from this contagious disease. Using a face mask is one of the best methods to get rid of COVID-19. The mask combined with activated carbon can be beneficial for adsorbing and disinfecting the virus as it is the versatile adsorbent for the elimination of the organic, inorganic, and pathogenic contaminants.

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“…This figure also shows that the greatest adsorbent-adsorbate interaction occurred when there were fewer acid groups, greater presence of basic groups, and higher toluene content, while less energy was released when the sample contained higher content of acid groups, lower basicity and only hexane as adsorbate, showing that the extreme values of highest and lowest immersion enthalpy values corresponded to single-component systems (toluene or hexane as the only immersion liquid), this happened because when the starting sample was subjected to heat treatment, it was generated an unsaturated surface because of the desorption of acid-type functional groups, increasing the basicity, and at the same time, the lower content of oxygenated groups made the surface more akin to non-polar adsorbates as the studied hydrocarbons, but the interaction with toluene was higher since in addition to the aromatic ring generating π-π interactions with the activated carbon (greater in CST because having a higher content of basicity increased the amount of πē available to interact with the adsorbate), C 7 H 8 contained an electron-donor methyl group that increased the ring electronegativity, causing stronger attractions with the nucleophilic basal plane of the carbonaceous material (Daud and Houshamnd, 2010;Shafeeyan et al, 2010;Montes-Morán et al, 2012;Bhatnagar et al, 2013;Anuradha et al, 2014;Bedolla et al, 2014;Lo et al, 2014;da Costa Lopes et al, 2015;Abdulrasheed et al, 2018).…”

Section: Adsorbatesadsorbentmentioning

confidence: 99%

Comparative Study of Toluene and Hexane Adsorption on Activated Carbons From Gas and Liquid Phase. Enthalpy and Isotherms

Hernández-Monje

Giraldo

Moreno–Piraján

2020

Front. Environ. Chem.

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Activated carbons with different chemical and textural properties were used to carry out the adsorption of toluene and hexane from gas phase and from liquid phase for toluene-hexane solutions where toluene was used as a solute and hexane as the solvent, complementing the process with the evaluation of the immersion enthalpy for the pure components and toluene-hexane mixtures at different molar fractions. The adsorption capacities for the gas phase were between 3.40 and 0.05 mmol g −1 , being higher for toluene because of the π-π interaction with the solid; when evaluating the liquid phase, the adsorption capacities were 0.24 and 0.74 mmol g −1 , where the adsorption of toluene decreased compared to the gas phase because of the solute-solute, solvent-solvent, solute-solvent interaction. The immersion enthalpies for the pure solvents were between −40.87 and −126.10 J g −1 being higher also for toluene confirming a greater interaction compared to hexane; for the mixtures, immersion enthalpy was higher than hexane enthalpies, but lower than toluene enthalpies with values between −59.79 and −107.95 J g −1. It was found that there was a greater interaction between the sample with a lower content of acid groups and a greater surface area with toluene due to the high electron density of carbon and London-type as π-π interactions with the aromatic compound. For mixtures, hexane decreased the adsorption capacity and interaction with respect to toluene because there was competition for adsorption sites and subsequent displacement of hexane molecules when the amount of toluene on the surface increased.

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Surface modification of activated carbon for adsorption of SO2 and NOX: A review of existing and emerging technologies

Cited by 180 publications

References 197 publications

Fibrous spherical Ni‐M/ZSM‐5 (M: Mg, Ca, Ta, Ga) catalysts for methane dry reforming: The interplay between surface acidity‐basicity and coking resistance

Fibrous spherical Ni‐M/ZSM‐5 (M: Mg, Ca, Ta, Ga) catalysts for methane dry reforming: The interplay between surface acidity‐basicity and coking resistance

Analysis on Preparation, Application, and Recycling of Activated Carbon to Aid in COVID-19 Protection

Comparative Study of Toluene and Hexane Adsorption on Activated Carbons From Gas and Liquid Phase. Enthalpy and Isotherms

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