Kinetics of Sulfur Dioxide Adsorption on Modified Activated Coal Produced From Peach Shells

Mamyrbekova, Aizhan; Mamitova, A. D.; Kassymova, M.K.; Mamyrbekova, Aigul; Daribayev, Zh.E.; Pralieva, R.E.; Mutasheva, G.S.

doi:10.31788/rjc.2020.1345761

RJC

2020

DOI: 10.31788/rjc.2020.1345761

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Kinetics of Sulfur Dioxide Adsorption on Modified Activated Coal Produced From Peach Shells

Aizhan Mamyrbekova¹,

A. D. Mamitova²,

M.K. Kassymova³

et al.

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2021

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Analysis of the Effect of Conditions of Preparation of Nitrogen-Doped Activated Carbons Derived from Lotus Leaves by Activation with Sodium Amide on the Formation of Their Porous Structure

Kwiatkowski

2021

Materials

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This paper presents results of the analysis of the impact of activation temperature and mass ratio of activator to carbonized precursor R on the porous structure of nitrogen-doped activated carbons derived from lotus leaves by carbonization and chemical activation with sodium amide NaNH2. The analyses were carried out via the new numerical clustering-based adsorption analysis (LBET) method applied to nitrogen adsorption isotherms at −195.8 °C. On the basis of the results obtained it was shown that the amount of activator, as compared to activation temperatures, has a significantly greater influence on the formation of the porous structure of activated carbons. As shown in the study, the optimum values of the porous structure parameters are obtained for a mass ratio of R = 2. At a mass ratio of R = 3, a significant decrease in the values of the porous structure parameters was observed, indicating uncontrolled wall firing between adjacent micropores. The conducted analyses confirmed the validity of the new numerical clustering-based adsorption analysis (LBET) method, as it turned out that nitrogen-doped activated carbons prepared from lotus leaves are characterized by a high share of micropores and a significant degree of surface heterogeneity in most of the samples studied, which may, to some extent, undermine the reliability of the results obtained using classical methods of structure analysis that assume only a homogeneous pore structure.

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Analysis of the Effect of Conditions of Preparation of Nitrogen-Doped Activated Carbons Derived from Lotus Leaves by Activation with Sodium Amide on the Formation of Their Porous Structure

Kwiatkowski

2021

Materials

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show abstract

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Kinetics of Sulfur Dioxide Adsorption on Modified Activated Coal Produced From Peach Shells

Cited by 1 publication

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Analysis of the Effect of Conditions of Preparation of Nitrogen-Doped Activated Carbons Derived from Lotus Leaves by Activation with Sodium Amide on the Formation of Their Porous Structure

Analysis of the Effect of Conditions of Preparation of Nitrogen-Doped Activated Carbons Derived from Lotus Leaves by Activation with Sodium Amide on the Formation of Their Porous Structure

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