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A perspective of solutions for membrane instabilities in olefin/paraffin separations: a review

Abstract: Light olefins are mainly produced by naphtha steam cracking, which is among the more energy intensive processes in the petrochemical industry. To save energy, some alternatives have been proposed to partially replace or combine with cryogenic distillation the conventional technology to separate olefins and paraffins. Within this aim, facilitated transport membranes, mainly with Ag+cations as selective carriers, have received great attention owing to the high selectivity and permeance provided. However, to be used industrially, the undesirable instability associated with the Ag+ cation should be considered. Poisonous agents and polymer membrane materials are sources of Ag+ deactivation. In recent years, great achievements on the separation performance have been reported, but the current challenge is to maintain the selectivity in long-term separation processes. This work presents a critical analysis of the potential causes of Ag+ deactivation and points out some alternatives that have been proposed to overcome the hurdle. This review highlights and critically analyses some perspectives of the ongoing development and application of facilitated transport membranes.

 Autoría: Campos A., Dos Reis R., Ortiz A., Gorri D., Ortiz I.,

 Fuente: Industrial and Engineering Chemistry Research, 2018, 57(31), 10071-10085

 Editorial: American Chemical Society

 Fecha de publicación: 08/08/2018

 Nº de páginas: 60

 Tipo de publicación: Artículo de Revista

 DOI: 10.1021/acs.iecr.8b02013

 ISSN: 0888-5885,1520-5045

 Proyecto español: CTQ2015-66078-R

 Url de la publicación: https://doi.org/10.1021/acs.iecr.8b02013