Direct CO2 Capture from Ambient Air by K2CO3/Alumina Composite Sorbent for Synthesis of Renewable Methane | Sciact - CRIS-система Института катализа

Direct CO2 Capture from Ambient Air by K2CO3/Alumina Composite Sorbent for Synthesis of Renewable Methane Научная публикация

Журнал

Renewable Bioresources
ISSN: 2052-6237

Вых. Данные

Год: 2015, Том: 3, Номер статьи : 1, Страниц : 7 DOI: 10.7243/2052-6237-3-1

Ключевые слова

Carbon dioxide, potassium carbonate, alumina, composite material, absorption, regeneration, air, grain size effect

Авторы

Veselovskaya Janna V. ^1,2,3 , Derevshhikov Vladimir S. ^1,2,3 , Kardash Tatyana Yu. ^1,2,3 , Okunev Aleksey G. ^1,2

Организации

1	Boreskov Institute of Catalysis, Prospekt Akademika Lavrentieva 5, Novosibirsk, 630090, Russia
2	Novosibirsk State University, Pirogova str. 2, Novosibirsk, 630090, Russia
3	Research and Educational Center for Energy Efficient Catalysis in Novosibirsk National Research University, Pirogova str. 2, Novosibirsk, 630090, Russia

Информация о финансировании (3)

1	Сколковский институт науки и технологий
2	Российский фонд фундаментальных исследований	14-03-31731
3	Фонд «Сколково»	1 от 28.11.2013

A composite sorbent was synthesized by impregnating cylindrical granules of mesoporous γ-Al2O3 with an aqueous solution of K2CO3. Three fractions of the composite with the characteristic grain size of 1-2 mm, 3-4 mm and 4-6 mm were tested for direct carbon dioxide capture from ambient air in a continuousflow system. It was shown that dynamic CO2 absorption capacity of the composite sorbent increases significantly with decrease of the characteristic grain size, which indicates that the process is limited by mass transfer. The effect of temperature on thermal regeneration of the composite was also investigated. The change of regeneration temperature from 250 to 300°C enhanced CO2 absorption capacity for all the fractions studied. XRD in situ study showed that the reason of this enhancement is thermal decomposition of potassium dawsonite KAlCO3(OH)2 formed during synthesis of the composite material. The composite sorbent demonstrated a good stability of its CO2 absorption characteristics, therefore it should be considered as a promising material for direct carbon dioxide capture from air.

Veselovskaya J.V. , Derevshhikov V.S. , Kardash T.Y. , Okunev A.G.
Direct CO2 Capture from Ambient Air by K2CO3/Alumina Composite Sorbent for Synthesis of Renewable Methane

Renewable Bioresources. 2015. V.3. 1 :1-7. DOI: 10.7243/2052-6237-3-1 РИНЦ OpenAlex

Полный текст от издателя

Поступила в редакцию:	10 нояб. 2014 г.
Принята к публикации:	2 янв. 2015 г.
Опубликована в печати:	6 янв. 2015 г.
Опубликована online:	6 янв. 2015 г.

РИНЦ:	35045396
OpenAlex:	W1965951477

БД	Цитирований
РИНЦ	12
OpenAlex	25