Thermally crosslinked polyimide hollow fiber membranes for natural gas purificationReportar como inadecuado


Thermally crosslinked polyimide hollow fiber membranes for natural gas purification


Thermally crosslinked polyimide hollow fiber membranes for natural gas purification - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Robust industrially relevant membranes for CO₂ removal from aggressive natural gas feed streams were developed and characterized. Asymmetric hollow fiber membranes with defect-free selective skin layers on an optimized porous support substructure were successfully spun and subsequently stabilized by covalent crosslinking within the economical membrane formation process. Thermal treatment conditions, which promote sufficient crosslinking without introducing defects or undesired substructure resistance, were identified. It was found that crosslinking improves membrane efficiency and plasticization resistance as well as mechanical strength of fibers. The capability to maintain attractive separation performance under realistic operating conditions and durability against deleterious impurities suggests that the crosslinked fibers have great potential for use in diverse aggressive applications, even beyond the CO₂-CH₄ example explored in this work.



Georgia Tech Theses and Dissertations - School of Chemical and Biomolecular Engineering Theses and Dissertations -



Autor: Chen, Chien-Chiang - -

Fuente: https://smartech.gatech.edu/







Documentos relacionados