CO2 Sorption Behavior of Composite Materials Composed of Amino Acid Ionic Liquid and SiO2 or ZrO2-SiO2 Aerogels | Sciact - CRIS-система Института катализа

CO2 Sorption Behavior of Composite Materials Composed of Amino Acid Ionic Liquid and SiO2 or ZrO2-SiO2 Aerogels Научная публикация

Журнал

Colloids and Surfaces A: Physicochemical and Engineering Aspects
ISSN: 0927-7757

Вых. Данные

Год: 2026, Том: 731, Номер статьи : 139060, Страниц : 12 DOI: 10.1016/j.colsurfa.2025.139060

Ключевые слова

Amino acid ionic liquid; CO2 capture; Composite sorbent; Aerogel; Porosity

Авторы

Sheshkovas Andrey Z. ¹ , Veselovskaya Janna V. ¹ , Rogov Vladimir A. ^1,2 , Shalygin Anton S. ^1,3 , Vdovichenko Vsevolod A. ¹ , Deng Shuai ⁴ , Kozlov Denis V. ¹

Организации

1	Boreskov Institute of Catalysis SB RAS, Akademika Lavrentieva Av. 5, Novosibirsk 630090, Russia
2	Novosibirsk State University, Pirogova Str. 1, Novosibirsk 630090, Russia
3	Zelinsky Institute of Organic Chemistry RAS, Leninsky Prospekt 47, Moscow 119991, Russia
4	Tianjin University, Tianjin 300350, China

Информация о финансировании (1)

Министерство науки и высшего образования Российской Федерации (с 15 мая 2018)

FWUR-2024-0036

This study investigates the use of the composite sorbents based on mesoporous silica and zirconia-silica aerogels functionalized with an amino acid ionic liquid for CO2 capture from flue gases. The 1-ethyl-3-methylimidazolium glycinate ([Emim][Gly]) ionic liquid was supported on aerogels with varying Zr/Si ratios and porosities to evaluate the CO2 sorption performance of the resulting composite materials. The best-performing composite material containing 40 wt% [Emim][Gly] achieved a dynamic sorption capacity of 51.2 mg(CO2)/g, slightly exceeding the theoretical stoichiometric limit due to additional physical adsorption. The study provides fresh insights into the impact of support porosity on the sorption characteristics of composite materials. The porous structure of a support played a critical role, with moderate porosity (75–81%) enabling optimal performance, while excessive porosity (≥87%) led to pore collapse and reduced CO2 sorption efficiency. The heat capacity of [Emim][Gly] was measured for the first time using the differential scanning calorimetry method and found to be 1.8-2.0 J/(g·K) over the temperature range of 315-373 K. The data on the ionic liquid's heat capacity, as well as measured values of CO2 sorption capacity and enthalpy of CO2 sorption were used to estimate for the first time the thermal energy required for regenerating composite materials based on [Emim][Gly]. The best-performing composite material requires a low regeneration energy of 3.7 GJ/t(CO2), outperforming conventional amine-based solvents. The results obtained highlight the importance of tailored support design in the development of efficient, energy-saving materials for CO2 capture, with potential applications in industrial flue gas treatment.

Sheshkovas A.Z. , Veselovskaya J.V. , Rogov V.A. , Shalygin A.S. , Vdovichenko V.A. , Deng S. , Kozlov D.V.
CO2 Sorption Behavior of Composite Materials Composed of Amino Acid Ionic Liquid and SiO2 or ZrO2-SiO2 Aerogels
Colloids and Surfaces A: Physicochemical and Engineering Aspects. 2026. V.731. 139060 :1-12. DOI: 10.1016/j.colsurfa.2025.139060

Поступила в редакцию:	22 сент. 2025 г.
Принята к публикации:	22 нояб. 2025 г.
Опубликована online:	23 нояб. 2025 г.
Опубликована в печати:	20 февр. 2026 г.

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