Guedes, Ana Paula de Melo AlvesLemos, Gabriela da Silva2016-08-092021-09-272016-08-092021-09-272016-06-16LEMOS, Gabriela da Silva. Avaliação da remoção de monoaromáticos em águas utilizando vermiculita modificada com nióbio. 2016. 47f. Trabalho de Conclusão de Curso (Graduação em Química do Petróleo) - Instituto de Química, Centro de Ciências Exatas e da Terra, Universidade Federal do Rio Grande do Norte, Natal - RN, 2016.https://repositorio.ufrn.br/handle/123456789/38391The petrochemical industry effluents have been the focus of numerous studies on account of their high toxicity, derived mainly from organic compounds benzene, toluene, ethylbenzene and xylene (BTEX), which are considered pollutants harmful to human health and the environment. Faced with the different existing techniques aimed at the degradation of pollutants, it stands out the catalytic oxidation using hydrogen peroxide for the generation of the hydroxyl radical (•OH). In this study, aiming to find a heterogeneous catalyst having good activity in the removal of BTEX group via an oxidation reaction materials were synthesized composite oxyhydroxide niobium/ vermiculite through deposition-precipitation method at 0.01; 0.05 and 0.1 concentrations using NH4[NbO(C2O4)2(H2O)].3H2O niobium as precursor salt. For this also was done the synthesis of the materials out of which the composite, and the oxyhydroxide niobium and sodium vermiculite. Then, the materials were characterized with X Ray Diffractometry (XRD), Fourier Transform Infrared Absorption Spectrometry (FTIR), Sweeping Eletronic microscopy (SEM) and Energy Dispersive Spectroscopy (EDS). From the XRD patterns of the composite materials it was found that in the material with the lowest amount of niobium the reflection of the vermiculite had a decrease and those reflections relative to the hydrobiotite and the biotite became more evident; in the materials with higher amount of niobium only the biotite associated reflection remains in the diffractogram. The micrographs showed that the clay continued to show morphology of plaques even after modification with NbO2OH and EDS data confirmed the presence of niobium in all composites in which the atomic percentage of that element increased with increasing concentration of the precursor salt niobium. The results of the analyzes showed that the synthesis of the composites was successful, presenting these characteristics that make of these good candidates to be applied in the removal of BTEX compounds.openAccessAn error occurred getting the license - uri.Indústria petrolíferaVermiculitaOxihidróxido de nióbioRemoção - Compostos orgânicosCompostos BTEXbachelorThesis