Síntese, modificação, caracterização e aplicação catalítica da zeólita ferrierita no craqueamento do n-hexano
This work proposes the synthesis, modification, characterization and evaluation of the catalytic application of Zeolite ferrierite (FER) in the n-hexane cracking. The physico-chemical properties of the zeolite ferrierite, in three synthesized compositions and in their commercial form, were modified...
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| Formato: | tesis de maestría |
| Estado: | Versión publicada |
| Fecha de publicación: | 2017 |
| País: | Brasil |
| Recursos: | Universidade Federal de Alagoas (UFAL) |
| Repositorio: | Repositório Institucional da Universidade Federal de Alagoas (UFAL) |
| Idioma: | portugués |
| OAI Identifier: | oai:www.repositorio.ufal.br:riufal/2011 |
| Acesso em linha: | http://www.repositorio.ufal.br/handle/riufal/2011 |
| Access Level: | acceso abierto |
| Palavra-chave: | Zeólita ferrierita - Síntese Dessilicação Craqueamento catalítico Mesoporos Zeolite Ferrierite Cracking Desilication Mesoporosity CNPQ::ENGENHARIAS::ENGENHARIA QUIMICA |
| Resumo: | This work proposes the synthesis, modification, characterization and evaluation of the catalytic application of Zeolite ferrierite (FER) in the n-hexane cracking. The physico-chemical properties of the zeolite ferrierite, in three synthesized compositions and in their commercial form, were modified through desilication process. The samples were modified using sodium hydroxide, at a concentration of 0.2 M and a temperature of 90°C, and subsequent treatment with oxalic acid solution (AOc) at a concentration of 1 M at room temperature. The treatments provided the significant generation of mesoporosity in the modified samples. The zeolites obtained were characterized by X-ray diffractometry (XRD), Nitrogen adsorption at -196°C by BET method and thermogravimetric analysis (ATG). The evaluation of the catalytic activity efficiency of zeolite ferrierite through the n-hexane cracking model reaction was demonstrated by obtained results, using a system of catalytic activity installed for that purpose. The results of the catalytic activity tests of the modified samples presented a decrease of the conversion, when compared with their precursor samples. However, the modified samples showed an increase in stability over their precursor samples. |
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