Solution combustion synthesis derived Li4SiO4 for post-combustion carbon capture

Kagan Benzesik*, Ahmet Turan, Şeref Sönmez, Maria Teresa Izquierdo, Onuralp Yücel

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Lithium-based sorbents are considered as promising candidates for post-combustion carbon capture because of their superior stability compared to CaO. In the present study, Li4SiO4 powders were synthesized by Solution Combustion Synthesis (SCS) technique using LiNO3 as lithium source, TEOS as silicon source and citric acid as the fuel. CO2 sorption tests were carried out for the synthesized samples and, powder prepared at 650°C during 4 h, which has 17 µm of particle size, 5.2 m2 g−1 of specific surface area, 85.2% Li4SiO4 phase purity with 97 nm of crystallite size showed a sorption performance as 29.5 wt% CO2 uptake value, in thermobalance test under 92 vol% CO2 (N2 balance) gas concentration at 600°C. The sample had a CO2 uptake value of 21.4 wt% under 20 vol% CO2 concentration which was chosen to simulate industrial off-gas conditions. Also, the same sample showed a good cyclic durability during the sorption/desorption tests. The sample maintained its cyclic CO2 uptake capability range between 21 and 24 wt% for 15 cycles.

Original languageEnglish
Pages (from-to)573-585
Number of pages13
JournalSeparation Science and Technology
Volume58
Issue number3
DOIs
Publication statusPublished - 2023

Bibliographical note

Publisher Copyright:
© 2022 Taylor & Francis Group, LLC.

Funding

This work is funded by the Scientific Research Projects Coordination Unit (BAP) at Istanbul Technical University [Project no: 42201]. Kagan Benzesik also acknowledges the TİNÇEL Foundation for the financial support for his research visit to Instituto de Carboquimica, Zaragoza, Spain. Kagan Benzesik also acknowledges the TİNÇEL Foundation for the financial support for his research visit to Instituto de Carboquimica, Zaragoza, Spain.

FundersFunder number
TİNÇEL Foundation
Istanbul Teknik Üniversitesi42201

    Keywords

    • CO capture
    • Solution combustion synthesis
    • lithium orthosilicate
    • solid sorbent

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