Santos, Luciene da SilvaSilva, Etemistocles Gomes da2016-05-052021-09-272016-05-052021-09-272015-12-16SILVA, Etemistocles Gomes da. Adsorção de CO2 utilizando material mesoporoso impregnado com amina. 2015. 69f. Trabalho de conclusão de curso ( Graduação em Química do Petróleo)- Departamento de química, Universidade Federal do Rio Grande do Norte, Natal, 2015.https://repositorio.ufrn.br/handle/123456789/38368The emission of greenhouse gases into the atmosphere is a major cause of global warming events. Among these gases stands out carbon dioxide (CO2), the emissions can be reduced by capture processes and carbon sequestration. The adsorption processes have presented several advantages for the capture of CO2, as will regeneration of adsorbents, minimizing environmental impact and greater economy. The mesoporous materials of the MCM-41 type gained special interest in the adsorption of CO2 due to its high porosity and ease of rapid gas diffusion on the surface. This work involved the study of CO2 adsorption capacity by gravimetric method of mesoporous material MCM-41 type, synthesized with two commercial silica: silica gel 60 - Chromatographic (SC) and silica Fumed (SF) and modified with monoethanolamine (MEA) to 0.50 mol.L-1 and 1.66 mol.L-1 and assessing their selectivity in the pressure range from 1 to 40 bar, at 25°C using a magnetic suspension balance. The mesoporous materials MSC (synthesized with silica gel 60 - Chromatographic) and MSF (synthesized Fumed silica) were synthesized under the same reaction conditions and both samples were modified by wet with MEA obtained samples: MSC-1 and MSF-1 (modified with MEA to 0.50 mol.L-1) and MSC-2 and SPS-2 (modified with MEA to 1.66 mol.L-1), The characterization of the material is given by: XRD, N2 isotherms (BET/BJH), FTIR, TG/DTG and SEM. The results of adsorption isotherms allowed to observe that the modified sample with MEA had higher CO2 adsorption capacity at low pressures (< 5 bar), being overcome by the samples without modification (MSC and MSF) at higher pressure values (> 5 bar). The results showed that the pure materials are favorable for applications where high pressures are required. The adsorption values at 1 bar for modified samples were almost double that of the non modified as follows: MSC: 0.73 mmol.g-1, MSC-1: 1.24 mmol.g-1, MSC-2: 1.20 mmol.g-1 and MSF: mmol.g-1, MSF-1: 1.08 mmol.g-1, MSF-2: 0.91 mmol.g-1. The experimental values for maximum adsorption capacity of the unmodified samples were: MSF: 11.39 mmol.g-1and MSC: 10.44 mmol.g-1 at 40 bar pressure.openAccessMCM-41.Adsorção de CO2.MEA.Método gravimétrico.CO2 adsorption.Gravimetric method.bachelorThesisInorgânica e físico-química.