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Thermodynamic Characteristics of the Hydrogen Sulfide Sorption Process by Ferromanganese Materials

[Image: see text] The work analyzes hydrogen sulfide sorption from model gas mixtures containing H(2)S from 1.25 × 10(–3) to 1.28 × 10(–4) mol/L under static conditions at temperatures 253 and 298 K on the raw manganese ore of the Ulu-Telyak deposit (Bashkortostan, Russia), manganese(IV) oxide, and...

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Autores principales: Cheremisina, Olga V., Ponomareva, Maria A., Bolotov, Victor A., Osipov, Artyom S., Sitko, Alexandr V.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2022
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8793082/
https://www.ncbi.nlm.nih.gov/pubmed/35097293
http://dx.doi.org/10.1021/acsomega.1c06037
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author Cheremisina, Olga V.
Ponomareva, Maria A.
Bolotov, Victor A.
Osipov, Artyom S.
Sitko, Alexandr V.
author_facet Cheremisina, Olga V.
Ponomareva, Maria A.
Bolotov, Victor A.
Osipov, Artyom S.
Sitko, Alexandr V.
author_sort Cheremisina, Olga V.
collection PubMed
description [Image: see text] The work analyzes hydrogen sulfide sorption from model gas mixtures containing H(2)S from 1.25 × 10(–3) to 1.28 × 10(–4) mol/L under static conditions at temperatures 253 and 298 K on the raw manganese ore of the Ulu-Telyak deposit (Bashkortostan, Russia), manganese(IV) oxide, and manganese(IV) and iron(III) oxide mixtures. The thermodynamic models for calculating the equilibrium constants and Gibbs energy changes were analyzed. The sorption isotherms were described by the Langmuir, Freundlich, Temkin, and Dubinin–Radushkevich models. The value of enthalpy [Image: see text] of hydrogen sorption on the ore was −68.98 ± 3.45 kJ/mol and those on model mixtures Mn(4) + Fe(2)O(3) and MnO(4) were ±12.20 kJ/mol and −103.826 ± 5.19 kJ/mol, respectively, and the entropies of the hydrogen sulfide sorption process on three manganese materials at 253 K were calculated. The limiting capacity values of manganese materials at 253 and 298 K were obtained. The morphological analysis of the ore samples, Mn(4) + Fe(2)O(3), and MnO(4), before and after hydrogen sulfide sorption, was carried out at 253 K. The obtained thermodynamic parameters determine the advantage of using the raw manganese ore over pure oxides, which characterizes its effective practical application in the desulfurization process.
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spelling pubmed-87930822022-01-28 Thermodynamic Characteristics of the Hydrogen Sulfide Sorption Process by Ferromanganese Materials Cheremisina, Olga V. Ponomareva, Maria A. Bolotov, Victor A. Osipov, Artyom S. Sitko, Alexandr V. ACS Omega [Image: see text] The work analyzes hydrogen sulfide sorption from model gas mixtures containing H(2)S from 1.25 × 10(–3) to 1.28 × 10(–4) mol/L under static conditions at temperatures 253 and 298 K on the raw manganese ore of the Ulu-Telyak deposit (Bashkortostan, Russia), manganese(IV) oxide, and manganese(IV) and iron(III) oxide mixtures. The thermodynamic models for calculating the equilibrium constants and Gibbs energy changes were analyzed. The sorption isotherms were described by the Langmuir, Freundlich, Temkin, and Dubinin–Radushkevich models. The value of enthalpy [Image: see text] of hydrogen sorption on the ore was −68.98 ± 3.45 kJ/mol and those on model mixtures Mn(4) + Fe(2)O(3) and MnO(4) were ±12.20 kJ/mol and −103.826 ± 5.19 kJ/mol, respectively, and the entropies of the hydrogen sulfide sorption process on three manganese materials at 253 K were calculated. The limiting capacity values of manganese materials at 253 and 298 K were obtained. The morphological analysis of the ore samples, Mn(4) + Fe(2)O(3), and MnO(4), before and after hydrogen sulfide sorption, was carried out at 253 K. The obtained thermodynamic parameters determine the advantage of using the raw manganese ore over pure oxides, which characterizes its effective practical application in the desulfurization process. American Chemical Society 2022-01-11 /pmc/articles/PMC8793082/ /pubmed/35097293 http://dx.doi.org/10.1021/acsomega.1c06037 Text en © 2022 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by-nc-nd/4.0/Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Cheremisina, Olga V.
Ponomareva, Maria A.
Bolotov, Victor A.
Osipov, Artyom S.
Sitko, Alexandr V.
Thermodynamic Characteristics of the Hydrogen Sulfide Sorption Process by Ferromanganese Materials
title Thermodynamic Characteristics of the Hydrogen Sulfide Sorption Process by Ferromanganese Materials
title_full Thermodynamic Characteristics of the Hydrogen Sulfide Sorption Process by Ferromanganese Materials
title_fullStr Thermodynamic Characteristics of the Hydrogen Sulfide Sorption Process by Ferromanganese Materials
title_full_unstemmed Thermodynamic Characteristics of the Hydrogen Sulfide Sorption Process by Ferromanganese Materials
title_short Thermodynamic Characteristics of the Hydrogen Sulfide Sorption Process by Ferromanganese Materials
title_sort thermodynamic characteristics of the hydrogen sulfide sorption process by ferromanganese materials
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8793082/
https://www.ncbi.nlm.nih.gov/pubmed/35097293
http://dx.doi.org/10.1021/acsomega.1c06037
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