CO<sub>2</sub> Capture at High Temperature and Low Concentration on Li<sub>4</sub>SiO<sub>4</sub> Based Sorbents
Solid sorbents based on lithium orthosilicate (Li4SiO4) have shown promise for CO2 capture at high temperature. Improved sorption properties can be obtained by appropriate doping. In this study, different promoted Li4SiO4-based sorbents were prepared by addition of potassium carbonate and binary/ter...
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| Format: | Article |
| Language: | English |
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AIDIC Servizi S.r.l.
2013-06-01
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| Series: | Chemical Engineering Transactions |
| Online Access: | https://www.cetjournal.it/index.php/cet/article/view/6608 |
| _version_ | 1818406749549363200 |
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| author | M. Puccini M. Seggiani S. Vitolo |
| author_facet | M. Puccini M. Seggiani S. Vitolo |
| author_sort | M. Puccini |
| collection | DOAJ |
| description | Solid sorbents based on lithium orthosilicate (Li4SiO4) have shown promise for CO2 capture at high temperature. Improved sorption properties can be obtained by appropriate doping. In this study, different promoted Li4SiO4-based sorbents were prepared by addition of potassium carbonate and binary/ternary alkali (Li, K and Na) carbonate eutectic mixtures. The CO2 sorption properties of the sorbents were investigated by thermal gravimetric analysis (TGA) at different temperatures in the range between 500 and 600 °C and at low CO2 partial pressure (0.04 atm). The results showed that all the promoters used noticeably improved the CO2 sorption capacity in comparison to no-promoted Li4SiO4. At the optimum sorption temperature of 580 °C, Li4SiO4 with addition of 30 wt% of K2CO3 showed the best CO2 adsorption proprieties with sorption capacities of 230 mg CO2/g sorbent corresponding to a conversion of about 80 %. Besides this sample maintained its original capacity during multiple CO2 sorption/desorption cycles. |
| first_indexed | 2024-12-14T09:16:53Z |
| format | Article |
| id | doaj.art-4c545a040fc54c78ae16dbe81f6378e0 |
| institution | Directory Open Access Journal |
| issn | 2283-9216 |
| language | English |
| last_indexed | 2024-12-14T09:16:53Z |
| publishDate | 2013-06-01 |
| publisher | AIDIC Servizi S.r.l. |
| record_format | Article |
| series | Chemical Engineering Transactions |
| spelling | doaj.art-4c545a040fc54c78ae16dbe81f6378e02022-12-21T23:08:24ZengAIDIC Servizi S.r.l.Chemical Engineering Transactions2283-92162013-06-013210.3303/CET1332214CO<sub>2</sub> Capture at High Temperature and Low Concentration on Li<sub>4</sub>SiO<sub>4</sub> Based SorbentsM. PucciniM. SeggianiS. VitoloSolid sorbents based on lithium orthosilicate (Li4SiO4) have shown promise for CO2 capture at high temperature. Improved sorption properties can be obtained by appropriate doping. In this study, different promoted Li4SiO4-based sorbents were prepared by addition of potassium carbonate and binary/ternary alkali (Li, K and Na) carbonate eutectic mixtures. The CO2 sorption properties of the sorbents were investigated by thermal gravimetric analysis (TGA) at different temperatures in the range between 500 and 600 °C and at low CO2 partial pressure (0.04 atm). The results showed that all the promoters used noticeably improved the CO2 sorption capacity in comparison to no-promoted Li4SiO4. At the optimum sorption temperature of 580 °C, Li4SiO4 with addition of 30 wt% of K2CO3 showed the best CO2 adsorption proprieties with sorption capacities of 230 mg CO2/g sorbent corresponding to a conversion of about 80 %. Besides this sample maintained its original capacity during multiple CO2 sorption/desorption cycles.https://www.cetjournal.it/index.php/cet/article/view/6608 |
| spellingShingle | M. Puccini M. Seggiani S. Vitolo CO<sub>2</sub> Capture at High Temperature and Low Concentration on Li<sub>4</sub>SiO<sub>4</sub> Based Sorbents Chemical Engineering Transactions |
| title | CO<sub>2</sub> Capture at High Temperature and Low Concentration on Li<sub>4</sub>SiO<sub>4</sub> Based Sorbents |
| title_full | CO<sub>2</sub> Capture at High Temperature and Low Concentration on Li<sub>4</sub>SiO<sub>4</sub> Based Sorbents |
| title_fullStr | CO<sub>2</sub> Capture at High Temperature and Low Concentration on Li<sub>4</sub>SiO<sub>4</sub> Based Sorbents |
| title_full_unstemmed | CO<sub>2</sub> Capture at High Temperature and Low Concentration on Li<sub>4</sub>SiO<sub>4</sub> Based Sorbents |
| title_short | CO<sub>2</sub> Capture at High Temperature and Low Concentration on Li<sub>4</sub>SiO<sub>4</sub> Based Sorbents |
| title_sort | co sub 2 sub capture at high temperature and low concentration on li sub 4 sub sio sub 4 sub based sorbents |
| url | https://www.cetjournal.it/index.php/cet/article/view/6608 |
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