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Analysis of the Macrokinetics of CO2 Sorption on 10%NaNO3/MgO Sorbent and Modeling of an Adsorber with a Hydrogen Capacity of 10 kg/h Full article

Journal Catalysis in Industry
ISSN: 2070-0504 , E-ISSN: 2070-0555
Output data Year: 2025, Volume: 17, Number: 2, Pages: 92-102 Pages count : 11 DOI: 10.1134/s2070050425700011
Tags magnesium oxide, CO2 sorption, kinetics, modeling, adsorber
Authors Shigarov A.B. 1 , Nikulina I.E. 1 , Pakharukova V.P. 1 , Potemkin D.I. 1,2
Affiliations
1 Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences (BIC SB RAS), Novosibirsk, 630090 Russia
2 Novosibirsk State University (NSU), Novosibirsk, 630090 Russia

Funding (1)

1 Russian Science Foundation 21-79-10377

Abstract: This study proposes a first-order macrokinetic model for CO2 sorption on a 10 mol % NaNO3/MgO sorbent. According to the experimental gravimetric data, the maximum sorption capacity of the 10 mol % NaNO3/MgO sorbent is determined and does not depend on the partial pressure of CO2; at 320°C it is equal to 159% (based on the initial mass of the sample) or 13.4 mmol CO2/gsorb. The calculated value of the sorption constant kads at temperatures of 280–320°C and a CO2 partial pressure of 0.50–0.75 atm is 0.017 min–1 atm–1. Based on the obtained kinetics, modeling of adiabatic and isothermal CO2 adsorbers was performed within the framework of the technological scheme for producing 10 kg/h of hydrogen from natural gas at an operating pressure of 12 atm. The calculations showed that for the adsorber to function effectively intensive removal of the heat released during the sorption process is necessary. This allows for the sorption of CO2 for 30 min at a temperature of 300°C and a gas hourly space velocity GHSV = 1170 h–1, while the concentration of CO2 at the outlet in dry gas does not exceed 1.5 mol %.
Cite: Shigarov A.B. , Nikulina I.E. , Pakharukova V.P. , Potemkin D.I.
Analysis of the Macrokinetics of CO2 Sorption on 10%NaNO3/MgO Sorbent and Modeling of an Adsorber with a Hydrogen Capacity of 10 kg/h
Catalysis in Industry. 2025. V.17. N2. P.92-102. DOI: 10.1134/s2070050425700011 WOS
Original: Шигаров А.Б. , Никулина И.Е. , Пахарукова В.П. , Потемкин Д.И.
Анализ макрокинетики сорбции СО2 на 10% NaNO3/MgO сорбенте и моделирование адсорбера с производительностью по водороду 10 кг/ч
Катализ в промышленности. 2024. №4. С.4-15. DOI: 10.18412/1816-0387-2024-4-4-15 РИНЦ AN OpenAlex
Dates:
Submitted: Dec 4, 2023
Accepted: Jan 19, 2024
Published print: Jun 1, 2025
Published online: Jun 24, 2025
Identifiers:
Web of science: WOS:001515178700001
Citing: Пока нет цитирований
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