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dc.contributor.authorSubha, P.
dc.contributor.authorNair, Balagopal
dc.contributor.authorVisakh, V.
dc.contributor.authorSreerenjini, C.
dc.contributor.authorPeer Mohamed, A.
dc.contributor.authorWarrier, K.
dc.contributor.authorYamaguchi, T.
dc.contributor.authorHareesh, U.
dc.identifier.citationSubha, P. and Nair, B. and Visakh, V. and Sreerenjini, C. and Mohamed, A. and Warrier, K. and Yamaguchi, T. et al. 2018. Germanium-incorporated lithium silicate as highly efficient low-temperature sorbents for CO2 capture. Journal of Materials Chemistry A. 6 (17): pp. 7913-7921.

© 2018 The Royal Society of Chemistry. Carbon dioxide emission from massive point sources such as industries and power plants is perceived to be a major contributor towards global warming and associated climate changes. Although lithium silicate has the highest capacity for CO2sorption (8 mmol g-1), it is kinetically limited during the sorption process, particularly at temperatures below 500 °C. Herein, we report a facile strategy for the development of germanium-incorporated lithium silicate composites, which display enhanced CO2absorption capacity as well as kinetics in the temperature range of 150-680 °C. The absorption capacity of 324 mg g-1at the rate of 117 mg g-1min-1was measured at 680 °C, and 49 mg g-1at the rate of 36 mg g-1min-1was measured at 300 °C for samples with a Si:Ge molar ratio of 1:0.183. This study thus highlights the possibility of employing germanium-incorporated lithium silicates for the absorption of CO2at a wide range of temperatures, including the in situ removal of CO2from chemical and petrochemical reactions, such as the water-gas shift reaction occurring at low temperature ranges of 150-450 °C, that has hitherto been not possible with pure Li4SiO4.

dc.publisherR S C Publications
dc.titleGermanium-incorporated lithium silicate as highly efficient low-temperature sorbents for CO2 capture
dc.typeJournal Article
dcterms.source.titleJournal of Materials Chemistry A
curtin.departmentNanochemistry Research Institute
curtin.accessStatusOpen access

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