| Full text | |
| Author(s): |
Assis, Matheus S.
;
Lucas, Marcela A.
;
Briois, Valerie
;
Possato, Luiz G.
Total Authors: 4
|
| Document type: | Journal article |
| Source: | APPLIED CATALYSIS B-ENVIRONMENTAL; v. 369, p. 15-pg., 2025-07-15. |
| Abstract | |
Ni/CeO2 catalysts were synthesized via the polymeric precursor method to investigate the effect of varying Ni load (5, 10, and 20 wt%) on the CeO2 structure, focusing on their structural and catalytic properties in converting CO2 to CH4. Although well studied, the polymeric precursor method is rarely explored for Ni/CeO2 in CO2 conversion. We demonstrate a systematic study of synthesis and characterization that the Ni incorporates in CeO2 structure and promotes the Ni-O-Ce solid solution formation, which is important in the selective conversion of CO2 into CH4. The CO2 conversion per Ni0 atom was 70 % higher (expressed as TON in s- 1) when 20 % of the NiCe-O species were present, as observed in the 5 and 10 wt% Ni load samples comparison. Long-term catalytic testing with the 10 wt% Ni load sample revealed the catalyst is highly active and 100 % selective to CH4. For all catalysts, the carbon balance was 100 %. (AU) | |
| FAPESP's process: | 23/04143-2 - Chemometric evaluation of Ni/CeO2 catalysts in the CO2 reduction reaction obtained by coprecipitation: an operando study |
| Grantee: | Matheus Silva de Assis |
| Support Opportunities: | Scholarships in Brazil - Doctorate (Direct) |
| FAPESP's process: | 21/02152-9 - Green syntheses, characterization and employment of novel biopolymers from vegetable / essential oils using sulfur crosslinker compounds |
| Grantee: | Gilbert Bannach |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 22/15445-7 - Multi-user Equipament approved in grant 2021/05246-4: Raman compacto de bancada ou campo. Sistema fibra ótica e sonda, detector CCD resfriado, laser de 532nm e 30 mW, resolução < 3,5 cm-1 e faixa de trabalho igual a 65 - 3400 cm-1: garantia 12 meses |
| Grantee: | Luiz Gustavo Possato |
| Support Opportunities: | Multi-user Equipment Program |
| FAPESP's process: | 22/14265-5 - In situ and operando studies of heterogeneous catalysts for CO2 conversion |
| Grantee: | Luiz Gustavo Possato |
| Support Opportunities: | Scholarships in Brazil - Young Researchers |
| FAPESP's process: | 22/15444-0 - Multi-user equipament approved in grant 2021/05246-4: Cromatógrafo Agilent 8860 |
| Grantee: | Luiz Gustavo Possato |
| Support Opportunities: | Multi-user Equipment Program |
| FAPESP's process: | 21/05246-4 - In situ and operando studies of heterogeneous catalysts for CO2 conversion |
| Grantee: | Luiz Gustavo Possato |
| Support Opportunities: | Research Grants - Young Investigators Grants |