Carbon-resistant bifunctional catalyst composed of LaFeO3 enhanced Ni-CaO for integrated CO2 capture and conversion
Coupled calcium cycling and dry reforming of methane (CaL-DRM) process has garnered significant attention in recent years as a promising technique for the CO2 capture and in-situ conversion. However, traditional Ni-CaO catalysts with substantial CaL-DRM activity are susceptible to severe carbon depo...
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-03-01
|
| Series: | Carbon Capture Science & Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2772656824001696 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832542456784093184 |
|---|---|
| author | Hengyu Wei Min Lin Juping Zhang Di Gao Yuhao Chen Liang Zhang Xing Zhu |
| author_facet | Hengyu Wei Min Lin Juping Zhang Di Gao Yuhao Chen Liang Zhang Xing Zhu |
| author_sort | Hengyu Wei |
| collection | DOAJ |
| description | Coupled calcium cycling and dry reforming of methane (CaL-DRM) process has garnered significant attention in recent years as a promising technique for the CO2 capture and in-situ conversion. However, traditional Ni-CaO catalysts with substantial CaL-DRM activity are susceptible to severe carbon deposition, which greatly hinders their industrial application. A combination of sol-gel and impregnation methods to include LaFeO3 into Ni-CaO to enhance CO2 capture and conversion is utilized. The characterization results indicate that the incorporation of LaFeO3 significantly improves the dispersion of Ni and CaO, increases the concentration of oxygen vacancies, effectively suppresses the sintering and carbon deposition, and improves the cycling stability of Ni-CaO. In addition, LaFeO3 promotes the outward diffusion of lattice oxygen, thereby facilitating CO2 capture and CH4 conversion to syngas. At 700 ℃, up to 86.5 % CO2 conversion, 87.6 % CO selectivity, and syngas yield close to the theoretical value of 1.0 were achieved over 5Ni-30CaO-LFO (30 wt% CaO). More importantly, the activity of catalyst remains almost unchanged after 30 cycles. This study introduces an innovative approach for CaL-DRM, showing significant potential for effective and stable CO2 capture and in-situ conversion. |
| format | Article |
| id | doaj-art-88f745921f6c43b2944e2962198a29f2 |
| institution | Kabale University |
| issn | 2772-6568 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Carbon Capture Science & Technology |
| spelling | doaj-art-88f745921f6c43b2944e2962198a29f22025-02-04T04:10:42ZengElsevierCarbon Capture Science & Technology2772-65682025-03-0114100358Carbon-resistant bifunctional catalyst composed of LaFeO3 enhanced Ni-CaO for integrated CO2 capture and conversionHengyu Wei0Min Lin1Juping Zhang2Di Gao3Yuhao Chen4Liang Zhang5Xing Zhu6State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, ChinaState Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, ChinaState Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, ChinaState Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, ChinaState Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, ChinaThree Gorges Group Yunnan Energy Investment Co., Ltd, Kunming 650051, China; Corresponding authors.State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China; Corresponding authors.Coupled calcium cycling and dry reforming of methane (CaL-DRM) process has garnered significant attention in recent years as a promising technique for the CO2 capture and in-situ conversion. However, traditional Ni-CaO catalysts with substantial CaL-DRM activity are susceptible to severe carbon deposition, which greatly hinders their industrial application. A combination of sol-gel and impregnation methods to include LaFeO3 into Ni-CaO to enhance CO2 capture and conversion is utilized. The characterization results indicate that the incorporation of LaFeO3 significantly improves the dispersion of Ni and CaO, increases the concentration of oxygen vacancies, effectively suppresses the sintering and carbon deposition, and improves the cycling stability of Ni-CaO. In addition, LaFeO3 promotes the outward diffusion of lattice oxygen, thereby facilitating CO2 capture and CH4 conversion to syngas. At 700 ℃, up to 86.5 % CO2 conversion, 87.6 % CO selectivity, and syngas yield close to the theoretical value of 1.0 were achieved over 5Ni-30CaO-LFO (30 wt% CaO). More importantly, the activity of catalyst remains almost unchanged after 30 cycles. This study introduces an innovative approach for CaL-DRM, showing significant potential for effective and stable CO2 capture and in-situ conversion.http://www.sciencedirect.com/science/article/pii/S2772656824001696CaL-DRMCO2 captureCarbon depositionMethaneHydrogen production |
| spellingShingle | Hengyu Wei Min Lin Juping Zhang Di Gao Yuhao Chen Liang Zhang Xing Zhu Carbon-resistant bifunctional catalyst composed of LaFeO3 enhanced Ni-CaO for integrated CO2 capture and conversion Carbon Capture Science & Technology CaL-DRM CO2 capture Carbon deposition Methane Hydrogen production |
| title | Carbon-resistant bifunctional catalyst composed of LaFeO3 enhanced Ni-CaO for integrated CO2 capture and conversion |
| title_full | Carbon-resistant bifunctional catalyst composed of LaFeO3 enhanced Ni-CaO for integrated CO2 capture and conversion |
| title_fullStr | Carbon-resistant bifunctional catalyst composed of LaFeO3 enhanced Ni-CaO for integrated CO2 capture and conversion |
| title_full_unstemmed | Carbon-resistant bifunctional catalyst composed of LaFeO3 enhanced Ni-CaO for integrated CO2 capture and conversion |
| title_short | Carbon-resistant bifunctional catalyst composed of LaFeO3 enhanced Ni-CaO for integrated CO2 capture and conversion |
| title_sort | carbon resistant bifunctional catalyst composed of lafeo3 enhanced ni cao for integrated co2 capture and conversion |
| topic | CaL-DRM CO2 capture Carbon deposition Methane Hydrogen production |
| url | http://www.sciencedirect.com/science/article/pii/S2772656824001696 |
| work_keys_str_mv | AT hengyuwei carbonresistantbifunctionalcatalystcomposedoflafeo3enhancednicaoforintegratedco2captureandconversion AT minlin carbonresistantbifunctionalcatalystcomposedoflafeo3enhancednicaoforintegratedco2captureandconversion AT jupingzhang carbonresistantbifunctionalcatalystcomposedoflafeo3enhancednicaoforintegratedco2captureandconversion AT digao carbonresistantbifunctionalcatalystcomposedoflafeo3enhancednicaoforintegratedco2captureandconversion AT yuhaochen carbonresistantbifunctionalcatalystcomposedoflafeo3enhancednicaoforintegratedco2captureandconversion AT liangzhang carbonresistantbifunctionalcatalystcomposedoflafeo3enhancednicaoforintegratedco2captureandconversion AT xingzhu carbonresistantbifunctionalcatalystcomposedoflafeo3enhancednicaoforintegratedco2captureandconversion |