SULFUR DIOXIDE INTERACTION WITH MONOETHANOLAMMONIUM AND POLYETHYLENEPOLYAMMONIUM CITRATES AQUEOUS SOLUTIONS PRODUCTS COMPOSITION AND THE RELATIVE STABILITY

SULFUR DIOXIDE INTERACTION WITH MONOETHANOLAMMONIUM AND POLYETHYLENEPOLYAMMONIUM CITRATES AQUEOUS SOLUTIONS PRODUCTS COMPOSITION AND THE RELATIVE STABILITY

The paper presents the results of pH, redox, and conductometric studies on the acid-base interaction during sulfur dioxide chemisorption by aqueous solutions containing 0.1 mol/L monoethanolammonium (MEA·1/3CA) and polyethylenepolyammonium (PEPA·1/3CA) citrates, as well as buffer solutions of monoet...

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Date:2025
Main Authors: Khoma, Ruslan, Vodzinskii, Sergey, Bienkovska, Tetyana
Format: Article
Language:English
Published: V.I.Vernadsky Institute of General and Inorganic Chemistry 2025
Online Access:https://ucj.org.ua/index.php/journal/article/view/712
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Journal Title:Ukrainian Chemistry Journal

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Ukrainian Chemistry Journal
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spelling oai:ojs2.1444248.nisspano.web.hosting-test.net:article-7122025-05-13T10:06:40Z SULFUR DIOXIDE INTERACTION WITH MONOETHANOLAMMONIUM AND POLYETHYLENEPOLYAMMONIUM CITRATES AQUEOUS SOLUTIONS PRODUCTS COMPOSITION AND THE RELATIVE STABILITY Khoma, Ruslan Vodzinskii, Sergey Bienkovska, Tetyana sulfur dioxide, ammonium citrates, acid-base interaction, ion associates, ion-molecular associates. The paper presents the results of pH, redox, and conductometric studies on the acid-base interaction during sulfur dioxide chemisorption by aqueous solutions containing 0.1 mol/L monoethanolammonium (MEA·1/3CA) and polyethylenepolyammonium (PEPA·1/3CA) citrates, as well as buffer solutions of monoethanolamine–monoethanolammonium citrate (MEA·1/6CA) and polyethylenepolyamine–polyethylenepolyammonium citrate (PEPA·1/6CA), in comparison with sodium citrate. The composition of the compounds formed during SO2 absorption by Na3Cit, MEA·1/3CA, PEPA·1/3CA, MEA·1/6CA, and PEPA·1/6CA solutions at 273–313 K was determined.For the same amount of absorbed sulfur dioxide, an increase in specific electrical conductivity (æ) with rising temperature was observed in SO2–Na3Cit–H2O and SO2–MEA×1/3CA–H2O solutions within the 273–313 K range. However, in the SO2–MEA×1/3CA–H2O, SO2–PEPA×1/3CA–H2O, SO2–MEA×1/6CA–H2O, and SO2–PEPA×1/6CA–H2O systems, a decrease in Δæ was noted upon heating to 303 K, which is attributed to their ion-molecular composition. Based on developed mathematical models, the ion-molecular component composition of SO2–MEA×1/3CA–H2O and SO2–MEA×1/6CA–H2O solutions was determined at 283–313 K. The concentration and thermodynamic constants for the formation of ionic associates were calculated:(NH3CH2CH2OH)2SO3, {H3CH2CH2OH}{HOC3H4(COOH)2(COO-)} (Ia), {H3CH2CH2OH}2{HOC3H4(COOH)(COO-)2} (IIa), {H3CH2CH2OH}2{HOC3H4(COOH)2(COO-)} (IIb), {H3CH2CH2OH}3{HOC3H4(COO-)3} (IIIa), as well as ion-molecular associates:{H3CH2CH2OH}{HOC3H4(COOH)3} (Ib), {NH2CH2CH2OH}3{H3CH2CH2OH}3{HOC3H4(COO-)3} (IVa), {NH2CH2CH2OH}2{H3CH2CH2OH}4{HOC3H4(COO-)3} (IVb). In SO2–MEA×1/3CA–H2O solutions, as the temperature increases, bond rearrangement occurs in ionic associates IIa and Ib, as indicated by the absence of a clear temperature dependence ofp, along with the strengthening of IIa and Ib. Conversely, in SO2–MEA×1/6CA–H2O solutions, increasing temperature leads to the weakening of the bonds in compounds Ia, IIIa, IVa, and IVb, while in compound Ib, the bonds strengthen. V.I.Vernadsky Institute of General and Inorganic Chemistry 2025-04-25 Article Article Inorganic Chemistry Неорганическая химия Неорганічна хімія application/pdf https://ucj.org.ua/index.php/journal/article/view/712 10.33609/2708-129X.91.3.2025.3-24 Ukrainian Chemistry Journal; Vol. 91 No. 3 (2025): Ukrainian Chemistry Journal; 3-24 Украинский химический журнал; Том 91 № 3 (2025): Ukrainian Chemistry Journal; 3-24 Український хімічний журнал; Том 91 № 3 (2025): Ukrainian Chemistry Journal; 3-24 2708-129X 2708-1281 en https://ucj.org.ua/index.php/journal/article/view/712/360
institution Ukrainian Chemistry Journal
baseUrl_str
datestamp_date 2025-05-13T10:06:40Z
collection OJS
language English
topic_facet sulfur dioxide
ammonium citrates
acid-base interaction
ion associates
ion-molecular associates.
format Article
author Khoma, Ruslan
Vodzinskii, Sergey
Bienkovska, Tetyana
spellingShingle Khoma, Ruslan
Vodzinskii, Sergey
Bienkovska, Tetyana
SULFUR DIOXIDE INTERACTION WITH MONOETHANOLAMMONIUM AND POLYETHYLENEPOLYAMMONIUM CITRATES AQUEOUS SOLUTIONS PRODUCTS COMPOSITION AND THE RELATIVE STABILITY
author_facet Khoma, Ruslan
Vodzinskii, Sergey
Bienkovska, Tetyana
author_sort Khoma, Ruslan
title SULFUR DIOXIDE INTERACTION WITH MONOETHANOLAMMONIUM AND POLYETHYLENEPOLYAMMONIUM CITRATES AQUEOUS SOLUTIONS PRODUCTS COMPOSITION AND THE RELATIVE STABILITY
title_short SULFUR DIOXIDE INTERACTION WITH MONOETHANOLAMMONIUM AND POLYETHYLENEPOLYAMMONIUM CITRATES AQUEOUS SOLUTIONS PRODUCTS COMPOSITION AND THE RELATIVE STABILITY
title_full SULFUR DIOXIDE INTERACTION WITH MONOETHANOLAMMONIUM AND POLYETHYLENEPOLYAMMONIUM CITRATES AQUEOUS SOLUTIONS PRODUCTS COMPOSITION AND THE RELATIVE STABILITY
title_fullStr SULFUR DIOXIDE INTERACTION WITH MONOETHANOLAMMONIUM AND POLYETHYLENEPOLYAMMONIUM CITRATES AQUEOUS SOLUTIONS PRODUCTS COMPOSITION AND THE RELATIVE STABILITY
title_full_unstemmed SULFUR DIOXIDE INTERACTION WITH MONOETHANOLAMMONIUM AND POLYETHYLENEPOLYAMMONIUM CITRATES AQUEOUS SOLUTIONS PRODUCTS COMPOSITION AND THE RELATIVE STABILITY
title_sort sulfur dioxide interaction with monoethanolammonium and polyethylenepolyammonium citrates aqueous solutions products composition and the relative stability
description The paper presents the results of pH, redox, and conductometric studies on the acid-base interaction during sulfur dioxide chemisorption by aqueous solutions containing 0.1 mol/L monoethanolammonium (MEA·1/3CA) and polyethylenepolyammonium (PEPA·1/3CA) citrates, as well as buffer solutions of monoethanolamine–monoethanolammonium citrate (MEA·1/6CA) and polyethylenepolyamine–polyethylenepolyammonium citrate (PEPA·1/6CA), in comparison with sodium citrate. The composition of the compounds formed during SO2 absorption by Na3Cit, MEA·1/3CA, PEPA·1/3CA, MEA·1/6CA, and PEPA·1/6CA solutions at 273–313 K was determined.For the same amount of absorbed sulfur dioxide, an increase in specific electrical conductivity (æ) with rising temperature was observed in SO2–Na3Cit–H2O and SO2–MEA×1/3CA–H2O solutions within the 273–313 K range. However, in the SO2–MEA×1/3CA–H2O, SO2–PEPA×1/3CA–H2O, SO2–MEA×1/6CA–H2O, and SO2–PEPA×1/6CA–H2O systems, a decrease in Δæ was noted upon heating to 303 K, which is attributed to their ion-molecular composition. Based on developed mathematical models, the ion-molecular component composition of SO2–MEA×1/3CA–H2O and SO2–MEA×1/6CA–H2O solutions was determined at 283–313 K. The concentration and thermodynamic constants for the formation of ionic associates were calculated:(NH3CH2CH2OH)2SO3, {H3CH2CH2OH}{HOC3H4(COOH)2(COO-)} (Ia), {H3CH2CH2OH}2{HOC3H4(COOH)(COO-)2} (IIa), {H3CH2CH2OH}2{HOC3H4(COOH)2(COO-)} (IIb), {H3CH2CH2OH}3{HOC3H4(COO-)3} (IIIa), as well as ion-molecular associates:{H3CH2CH2OH}{HOC3H4(COOH)3} (Ib), {NH2CH2CH2OH}3{H3CH2CH2OH}3{HOC3H4(COO-)3} (IVa), {NH2CH2CH2OH}2{H3CH2CH2OH}4{HOC3H4(COO-)3} (IVb). In SO2–MEA×1/3CA–H2O solutions, as the temperature increases, bond rearrangement occurs in ionic associates IIa and Ib, as indicated by the absence of a clear temperature dependence ofp, along with the strengthening of IIa and Ib. Conversely, in SO2–MEA×1/6CA–H2O solutions, increasing temperature leads to the weakening of the bonds in compounds Ia, IIIa, IVa, and IVb, while in compound Ib, the bonds strengthen.
publisher V.I.Vernadsky Institute of General and Inorganic Chemistry
publishDate 2025
url https://ucj.org.ua/index.php/journal/article/view/712
work_keys_str_mv AT khomaruslan sulfurdioxideinteractionwithmonoethanolammoniumandpolyethylenepolyammoniumcitratesaqueoussolutionsproductscompositionandtherelativestability
AT vodzinskiisergey sulfurdioxideinteractionwithmonoethanolammoniumandpolyethylenepolyammoniumcitratesaqueoussolutionsproductscompositionandtherelativestability
AT bienkovskatetyana sulfurdioxideinteractionwithmonoethanolammoniumandpolyethylenepolyammoniumcitratesaqueoussolutionsproductscompositionandtherelativestability
first_indexed 2025-09-24T17:44:00Z
last_indexed 2025-09-24T17:44:00Z
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