Melo, Dulce Maria de AraújoSilva, Joyce Cristine Araújo da2021-05-112021-09-272021-05-112021-09-272019-12-13SILVA, Joyce Cristine Araujo da. PREPARAÇÃO E CARACTERIZAÇÃO DE TRANSPORTADORES DE OXIGÊNIO À BASE DE Fe e Mn. 2019. 69f. Trabalho de Conclusão de Curso (Graduação em Química Bacharelado) - Departamento de Ciências Exatas e da Terra, Instituto de Química, Universidade Federal do Rio Grande do Norte, Natal, 2019.https://repositorio.ufrn.br/handle/123456789/38263Power generation is directly linked to the consumption of fossil fuels such as oil, coal and natural gas. One purpose, especially technological demand, produces a large volume of greenhouse gas intensifiers, increasing CO2 emissions, the largest contribution of global warming. CO2 capture and storage (CCS) technologies are emerging as an alternative to achieving CO2 reduction. Chemical Looping Combustion (CLC) has shown to be a promising technology for inherent CO2 capture due to low economic penalty and low reproduction cost with other CAC methods. Chemical Looping Reforming (CLR) is a technology that allows the production of H2, which has been widely used as a fuel today, directly reducing the emission of CO2 into the atmosphere. The characteristics of oxygen carriers are of utmost importance for the effectiveness of the CLC process. Iron, manganese, and mixed perovskite oxide-based oxygen carriers have been seen as attractive options for CLC application. Therefore, this course work aims to synthesize and characterize iron and manganese-based oxygen transporters, using the combustion method in solutions with different stereometric ratios in order to evaluate the chemical recirculation processes. The characterization techniques used were X-ray Diffraction (XRD), Raman Spectroscopy, Field Emission Scanning Electron Microscopy (SEM), Programmed Temperature Reduction (TPR) and Thermogravimetric Analysis (TGA). The combustion synthesis method proved to be efficient in the analysis of FE, FeMn 1: 1 and FeMn 2: 1 oxygen transporters, a fact proven by XRD. No SEM notes that the material morphology is modified with the addition of manganese to the structure, however, when iron oxide excess occurs in the morphology structure returned to the initial carrier. Through the consumption of H2 in the RTP, the FE transporter presented higher Ro. In reactivity analysis by FeMn 1: 1 reduction or transport cycles, applications were applied in CLR and FeMn 2: 1 processes in CLC processes. In thermogravimetric analysis, it is possible to use the oxidation of materials through mass gain with increasing temperature. Finally, all CH4-reduced oxygen carriers are efficient in returning to their initial phase when they expose an oxidized atmosphere.Attribution-NoDerivs 3.0 Brazilhttp://creativecommons.org/licenses/by-nd/3.0/br/Captura de CO2CO2 captureCLCCLCCombustão por recirculação químicaChemical Recirculation CombustionFerroIronManganêsManganesebachelorThesis