K2CO3-Containing Composite Sorbents Based on a ZrO2 Aerogel for Reversible CO2 Capture from Ambient Air | Sciact - CRIS-система Института катализа

K2CO3-Containing Composite Sorbents Based on a ZrO2 Aerogel for Reversible CO2 Capture from Ambient Air Научная публикация

Журнал

Microporous and Mesoporous Materials
ISSN: 1387-1811 , E-ISSN: 1873-3093

Вых. Данные

Год: 2021, Том: 310, Номер статьи : 110624, Страниц : 9 DOI: 10.1016/j.micromeso.2020.110624

Ключевые слова

Zirconia; Aerogel; Potassium carbonate; Carbon dioxide; Direct air capture

Авторы

Veselovskaya Janna V. ^1,2 , Derevschikov Vladimir S. ^1,2,3,4 , Shalygin Anton S. ¹ , Yatsenko Dmitry A. ^1,2

Организации

1	Boreskov Institute of Catalysis SB RAS, Akademika Lavrentieva av. 5, 630090, Novosibirsk, Russia
2	Novosibirsk State University, Pirogova str. 1, 630090, Novosibirsk, Russia
3	Novosibirsk State Technical University, K. Marksa av. 20, 630073, Novosibirsk, Russia
4	Tallinn University of Technology, Akadeemia tee 3, 12618, Tallinn, Estonia

Информация о финансировании (1)

Российский научный фонд

19-73-00079

In this work, K2CO3-containing composite materials were synthesized based on a mesoporous zirconia aerogel prepared by an epoxide-assisted sol-gel method using supercritical drying in ethanol. The porous ZrO2 was impregnated with an aqueous solution of potassium carbonate to obtain composite materials with K2CO3 weight content ranging from 9 to 29 wt%. All the composites were tested in the process of CO2 absorption from the air with a relative humidity of 25% followed by thermal desorption at 200 °C. The samples after the CO2 absorption step were characterized by Fourier transform infrared spectroscopy and X-ray diffraction methods. Among the materials studied, the composite sorbent containing 23 wt% K2CO3 demonstrated the highest dynamic CO2 absorption capacity (4.6 wt%) in the temperature-swing absorption (TSA) cycles. The results indicate that a certain part of K2CO3 loaded into zirconia mesopores forms surface species which do not actively participate in the CO2 absorption and desorption processes. For the composite K2CO3/ZrO2 material with the optimal K2CO3 loading, CO2 absorption capacity is higher compared to the values obtained for K2CO3/γ-Al2O3 composite sorbents studied under the same conditions. Taking into account that this material demonstrates stable CO2 absorption capacity values in the consecutive TSA cycles and needs a relatively low temperature for regeneration, it should be considered for application in Direct Air Capture units.

Veselovskaya J.V. , Derevschikov V.S. , Shalygin A.S. , Yatsenko D.A.
K2CO3-Containing Composite Sorbents Based on a ZrO2 Aerogel for Reversible CO2 Capture from Ambient Air
Microporous and Mesoporous Materials. 2021. V.310. 110624 :1-9. DOI: 10.1016/j.micromeso.2020.110624 WOS Scopus РИНЦ CAPlus OpenAlex

Поступила в редакцию:	23 апр. 2020 г.
Принята к публикации:	3 сент. 2020 г.
Опубликована online:	9 сент. 2020 г.
Опубликована в печати:	1 янв. 2021 г.

Web of science:	WOS:000583654300004
Scopus:	2-s2.0-85091348158
РИНЦ:	45270537
Chemical Abstracts:	2020:1959328
OpenAlex:	W3084143374

БД	Цитирований
Scopus	38
Web of science	30
РИНЦ	23
OpenAlex	35