Unveiling the potential of CaO-modified ZnO adsorbents for CO2 capture
Intermediate-high temperature adsorbents are of interest as they can be used in process intensification and integrated CO2 capture and conversion processes to couple gas separation with a chemical reaction. Herein we develop CaO-modified ZnO as a new intermediate-high temperature CO2 adsorbent and s...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-09-01
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| Series: | Carbon Capture Science & Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S277265682500123X |
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| author | Ali Goksu Sergio Carrasco Ruiz Tomas Ramirez Reina Melis Duyar |
| author_facet | Ali Goksu Sergio Carrasco Ruiz Tomas Ramirez Reina Melis Duyar |
| author_sort | Ali Goksu |
| collection | DOAJ |
| description | Intermediate-high temperature adsorbents are of interest as they can be used in process intensification and integrated CO2 capture and conversion processes to couple gas separation with a chemical reaction. Herein we develop CaO-modified ZnO as a new intermediate-high temperature CO2 adsorbent and show that the extent of CaO doping allows tuning of the CO2 adsorption/desorption temperature as well as capture capacity. Five different adsorbents were synthesized with Ca loadings of 0 %, 1 %, 5 %, 10 %, and 15 % by weight on ZnO and tested via fixed bed reactor experiments and TGA-DSC. The highest adsorption capacity was found to be 0.73 mmol/gcat for 5 %Ca/ZnO. The desorption temperatures for CO2 was found to also be influenced by Ca loading. Adsorbents were characterised by XRD, SEM, TGA, BET and ICP-MS, to understand their structure it was determined that CaO deposits on ZnO pores as separate domains. Herein we develop CaO-modified ZnO as a novel intermediate-high temperature CO₂ adsorbent, demonstrating tuneable adsorption/desorption characteristics through CaO dispersion on a ZnO scaffold. |
| format | Article |
| id | doaj-art-b3d5af39f15449f49f472a3b6ca384d0 |
| institution | Kabale University |
| issn | 2772-6568 |
| language | English |
| publishDate | 2025-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Carbon Capture Science & Technology |
| spelling | doaj-art-b3d5af39f15449f49f472a3b6ca384d02025-08-23T04:50:07ZengElsevierCarbon Capture Science & Technology2772-65682025-09-011610048410.1016/j.ccst.2025.100484Unveiling the potential of CaO-modified ZnO adsorbents for CO2 captureAli Goksu0Sergio Carrasco Ruiz1Tomas Ramirez Reina2Melis Duyar3School of Chemistry and Chemical Engineering, University of Surrey, Guildford GU2 7XH, United KingdomDepartment of Inorganic Chemistry and Materials Sciences Institute, University of Seville-CSIC, 41092 Seville, SpainDepartment of Inorganic Chemistry and Materials Sciences Institute, University of Seville-CSIC, 41092 Seville, SpainSchool of Chemistry and Chemical Engineering, University of Surrey, Guildford GU2 7XH, United Kingdom; Corresponding author.Intermediate-high temperature adsorbents are of interest as they can be used in process intensification and integrated CO2 capture and conversion processes to couple gas separation with a chemical reaction. Herein we develop CaO-modified ZnO as a new intermediate-high temperature CO2 adsorbent and show that the extent of CaO doping allows tuning of the CO2 adsorption/desorption temperature as well as capture capacity. Five different adsorbents were synthesized with Ca loadings of 0 %, 1 %, 5 %, 10 %, and 15 % by weight on ZnO and tested via fixed bed reactor experiments and TGA-DSC. The highest adsorption capacity was found to be 0.73 mmol/gcat for 5 %Ca/ZnO. The desorption temperatures for CO2 was found to also be influenced by Ca loading. Adsorbents were characterised by XRD, SEM, TGA, BET and ICP-MS, to understand their structure it was determined that CaO deposits on ZnO pores as separate domains. Herein we develop CaO-modified ZnO as a novel intermediate-high temperature CO₂ adsorbent, demonstrating tuneable adsorption/desorption characteristics through CaO dispersion on a ZnO scaffold.http://www.sciencedirect.com/science/article/pii/S277265682500123XCO2 captureCa/ZnOHigh-temperature CO2 adsorbentsThermochemical CO2 capture |
| spellingShingle | Ali Goksu Sergio Carrasco Ruiz Tomas Ramirez Reina Melis Duyar Unveiling the potential of CaO-modified ZnO adsorbents for CO2 capture Carbon Capture Science & Technology CO2 capture Ca/ZnO High-temperature CO2 adsorbents Thermochemical CO2 capture |
| title | Unveiling the potential of CaO-modified ZnO adsorbents for CO2 capture |
| title_full | Unveiling the potential of CaO-modified ZnO adsorbents for CO2 capture |
| title_fullStr | Unveiling the potential of CaO-modified ZnO adsorbents for CO2 capture |
| title_full_unstemmed | Unveiling the potential of CaO-modified ZnO adsorbents for CO2 capture |
| title_short | Unveiling the potential of CaO-modified ZnO adsorbents for CO2 capture |
| title_sort | unveiling the potential of cao modified zno adsorbents for co2 capture |
| topic | CO2 capture Ca/ZnO High-temperature CO2 adsorbents Thermochemical CO2 capture |
| url | http://www.sciencedirect.com/science/article/pii/S277265682500123X |
| work_keys_str_mv | AT aligoksu unveilingthepotentialofcaomodifiedznoadsorbentsforco2capture AT sergiocarrascoruiz unveilingthepotentialofcaomodifiedznoadsorbentsforco2capture AT tomasramirezreina unveilingthepotentialofcaomodifiedznoadsorbentsforco2capture AT melisduyar unveilingthepotentialofcaomodifiedznoadsorbentsforco2capture |