Germanium-incorporated lithium silicate as highly efficient low-temperature sorbents for CO2 capture
© 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),...
| Main Authors: | , , , , , , , |
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| Format: | Journal Article |
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R S C Publications
2018
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| Online Access: | http://hdl.handle.net/20.500.11937/68630 |
| _version_ | 1848761850251968512 |
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| author | Subha, P. Nair, Balagopal Visakh, V. Sreerenjini, C. Peer Mohamed, A. Warrier, K. Yamaguchi, T. Hareesh, U. |
| author_facet | Subha, P. Nair, Balagopal Visakh, V. Sreerenjini, C. Peer Mohamed, A. Warrier, K. Yamaguchi, T. Hareesh, U. |
| author_sort | Subha, P. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | © 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. |
| first_indexed | 2025-11-14T10:38:13Z |
| format | Journal Article |
| id | curtin-20.500.11937-68630 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:38:13Z |
| publishDate | 2018 |
| publisher | R S C Publications |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-686302019-09-02T07:00:40Z Germanium-incorporated lithium silicate as highly efficient low-temperature sorbents for CO2 capture Subha, P. Nair, Balagopal Visakh, V. Sreerenjini, C. Peer Mohamed, A. Warrier, K. Yamaguchi, T. Hareesh, U. © 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. 2018 Journal Article http://hdl.handle.net/20.500.11937/68630 10.1039/c8ta00576a R S C Publications fulltext |
| spellingShingle | Subha, P. Nair, Balagopal Visakh, V. Sreerenjini, C. Peer Mohamed, A. Warrier, K. Yamaguchi, T. Hareesh, U. Germanium-incorporated lithium silicate as highly efficient low-temperature sorbents for CO2 capture |
| title | Germanium-incorporated lithium silicate as highly efficient low-temperature sorbents for CO2 capture |
| title_full | Germanium-incorporated lithium silicate as highly efficient low-temperature sorbents for CO2 capture |
| title_fullStr | Germanium-incorporated lithium silicate as highly efficient low-temperature sorbents for CO2 capture |
| title_full_unstemmed | Germanium-incorporated lithium silicate as highly efficient low-temperature sorbents for CO2 capture |
| title_short | Germanium-incorporated lithium silicate as highly efficient low-temperature sorbents for CO2 capture |
| title_sort | germanium-incorporated lithium silicate as highly efficient low-temperature sorbents for co2 capture |
| url | http://hdl.handle.net/20.500.11937/68630 |