Poly(urethane-urea) composite membranes with Ag NP/activator and AgBF4/BMImBF4 systems for light olefins/paraffins separations
ABSTRACT: This thesis describe the preparation of Ag NP/activator/WPUU and AgBF4/BMImBF4/WPUU membranes for the separation of olefin/paraffin gas mixtures. In this work, two activator compounds were used for Ag NP, pbenzoquinone (p-Bq) and BMImBF4. The discussion of paraffin and olefin mass transpor...
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| Tipo de recurso: | tesis doctoral |
| Fecha de publicación: | 2018 |
| País: | España |
| Institución: | Universidad de Cantabria (UC) |
| Repositorio: | UCrea Repositorio Abierto de la Universidad de Cantabria |
| Idioma: | inglés |
| OAI Identifier: | oai:repositorio.unican.es:10902/14079 |
| Acceso en línea: | http://hdl.handle.net/10902/14079 |
| Access Level: | acceso abierto |
| Palabra clave: | Olefin/paraffin separations Facilitated transport membranes Silver salts Silver nanoparticles |
| Sumario: | ABSTRACT: This thesis describe the preparation of Ag NP/activator/WPUU and AgBF4/BMImBF4/WPUU membranes for the separation of olefin/paraffin gas mixtures. In this work, two activator compounds were used for Ag NP, pbenzoquinone (p-Bq) and BMImBF4. The discussion of paraffin and olefin mass transport trough membranes is carried out in the same chapter. The facilitated transport of olefin was not achieved in Ag NP/activator/WPUU membranes, probably caused by the low electron acceptor feature of BMImBF4 and by the poor stability of p-Bq. On the other hand, the facilitated transport of olefins was reached in AgBF4/BMImBF4/WPUU membranes. However, the membrane evidenced a humidification dependence to be stable in long-term permeation experiments. Finally, the overall conclusions of the Thesis and challenges for future researches are presented. |
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