Direct CO2 Capture from Ambient Air by K2CO3/Alumina Composite Sorbent for Synthesis of Renewable Methane | Sciact - CRIS-system of Boreskov Institute of Catalysis

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

Journal

Renewable Bioresources
ISSN: 2052-6237

Output data

Year: 2015, Volume: 3, Article number : 1, Pages count : 7 DOI: 10.7243/2052-6237-3-1

Tags

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

Authors

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

Affiliations

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

Funding (3)

1	Skolkovo Institute of Science and Technology
2	Russian Foundation for Basic Research	14-03-31731
3	Skolkovo Foundation	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

Full text from publisher

Submitted:	Nov 10, 2014
Accepted:	Jan 2, 2015
Published print:	Jan 6, 2015
Published online:	Jan 6, 2015

Elibrary:	35045396
OpenAlex:	W1965951477

DB	Citing
Elibrary	12
OpenAlex	25