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Effect of the Composition and Synthesis Method on the Sorption Properties of NaNO3/MgO Sorbents with Respect to Carbon Dioxide Full article

Journal Catalysis in Industry
ISSN: 2070-0504 , E-ISSN: 2070-0555
Output data Year: 2024, Volume: 16, Number: 2, Pages: 111–122 Pages count : 12 DOI: 10.1134/S2070050424700016
Tags magnesium oxide, CO2 sorption, NaNO3, hydrogen purification, sorption-enhanced catalytic steam reforming of CO
Authors Nikulina I.E. 1 , Derevshchikov V.S. 1,2 , Pakharukova V.P. 1 , Snytnikov P.V. 1 , Potemkin D.I. 1,2
Affiliations
1 Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090 Russia
2 Novosibirsk State University, Novosibirsk, 630090 Russia

Funding (1)

1 Russian Science Foundation 21-79-10377

Abstract: In this work, sorbents based on magnesium oxide MgO modified with NaNO3 taken in a concentration of 5–50 mol % have been synthesized and studied by various methods. It has been shown that the optimum synthesis method is impregnation of the MgO precursor. The optimum concentration of NaNO3 as a modifier is 10 mol %; this concentration provides a sorption capacity of 6.5 mmol CO2/gsorb within 1 h of sorption at 320°C and a CO2 content of 50 vol %. The sorption capacity achieved in 10 consecutive sorption–desorption cycles for 10 mol % NaNO3 is 4.5–5.5 mmol CO2/gsorb within 30 min of sorption at 50 vol % CO2 and temperatures of 300 and 350°C for the sorption and desorption stages, respectively. It has been found that an increase in the total sorption pressure to 10 atm makes it possible to decrease the sorption temperature to 220–260°C, and the achieved sorption capacity is 4.0 mmol CO2/gsorb at 25 vol % CO2, which is almost 2 times higher than the sorption capacity value at 1 atm. It has been shown that treatment with steam and hydrogen does not lead to a significant change in the sorption properties and phase composition of MgO modified with NaNO3.
Cite: Nikulina I.E. , Derevshchikov V.S. , Pakharukova V.P. , Snytnikov P.V. , Potemkin D.I.
Effect of the Composition and Synthesis Method on the Sorption Properties of NaNO3/MgO Sorbents with Respect to Carbon Dioxide
Catalysis in Industry. 2024. V.16. N2. P.111–122. DOI: 10.1134/S2070050424700016 WOS Scopus РИНЦ OpenAlex
Original: Никулина И.Е. , Деревщиков В.С. , Пахарукова В.П. , Снытников П.В. , Потемкин Д.И.
Влияние состава и способа приготовления NaNO3/MgO сорбентов на их сорбционные свойства в отношении диоксида углерода
Катализ в промышленности. 2023. Т.23. №6. С.5-16. DOI: 10.18412/1816-0387-2023-6-5-16 РИНЦ AN OpenAlex
Dates:
Submitted: Jun 29, 2023
Accepted: Sep 1, 2023
Published online: May 27, 2024
Published print: Jun 1, 2024
Identifiers:
Web of science: WOS:001233407500007
Scopus: 2-s2.0-85194890811
Elibrary: 67307907
OpenAlex: W4399054663
Citing: Пока нет цитирований
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