Utilize este identificador para referenciar este registo:
https://hdl.handle.net/10216/103849
Autor(es): | Mariana A. Moreira João Carlos Santos Alexandre F. P. Ferreira José Miguel Loureiro Alírio Egídio Rodrigues |
Título: | Influence of the Eluent in the MIL-53(Al) Selectivity for Xylene Isomers Separation |
Data de publicação: | 2011 |
Resumo: | Metal-organic framework MIL-53 (Al) pellets were tested for selective adsorption and separation of xylene isomers with the aim of studying the influence of the solvent used at bulk concentrations. In this way, a set of single and multicomponent pulse experiments to measure selectivities was conducted, with iso-octane, n-hexane, and n-heptane as eluents, at 313 K. In order to complete this study, multicomponent breakthrough experiments were also performed, under the same conditions, in the presence of these three eluents, and the obtained selectivities were compared. MIL-53(Al) presented a preference for o-xylene over m-xylene and p-xylene in all experiments. The selectivity was higher when n-heptane was the eluent. For the breakthrough experiments that used n-heptane as the eluent, selectivities of 2.1 were obtained for o-xylene over m-xylene and over p-xylene. It was possible to conclude that the choice of eluent influences the adsorption selectivity and capacity of the adsorbent. This could result, among other factors, from the adsorbent adsorbate interactions. These interactions may also occur with the eluent molecules (as an adsorbate), which influences the adsorption capacity. |
URI: | https://hdl.handle.net/10216/103849 |
Informação Relacionada: | info:eu-repo/grantAgreement/FCT - Fundação para a Ciência e a Tecnologia/Programa de Financiamento Plurianual de Unidades de I&D/PEst-C/EQB/LA0020/2011/Projeto Estratégico-LA 20 - 2011-2012/LA 20 |
Tipo de Documento: | Artigo em Revista Científica Internacional |
Condições de Acesso: | restrictedAccess |
Aparece nas coleções: | FEUP - Artigo em Revista Científica Internacional |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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161620.pdf Restricted Access | 2.89 MB | Adobe PDF | Request a copy from the Author(s) |
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