Tuyển tập các báo cáo nghiên cứu về hóa học được đăng trên tạp chí hóa hoc quốc tế đề tài : Synthesis of silicalite-poly(furfuryl alcohol) composite membranes for oxygen enrichment from air | He et al. Nanoscale Research Letters 2011 6 637 http content 6 1 637 o Nanoscale Research Letters a SpringerOpen Journal NANO EXPRESS Open Access Synthesis of silicalite-poly furfuryl alcohol composite membranes for oxygen enrichment from air 111 2 2 1 1 Li He Dan Li Kun Wang Akkihebbal K Suresh Jayesh Bellare Tam Sridhar and Huanting Wang Abstract Silicalite-poly furfuryl alcohol PFA composite membranes were prepared by solution casting of silicalite-furfuryl alcohol FA suspension on a porous polysulfone substrate and subsequent in situ polymerization of FA. X-ray diffraction nitrogen sorption thermogravimetric analysis scanning electron microscopy and energy-dispersive X-ray spectroscopy were used to characterize silicalite nanocrystals and silicalite-PFA composite membranes. The silicalite-PFA composite membrane with 20 wt. silicalite loading exhibits good oxygen nitrogen selectivity and high oxygen permeability 1 Barrers at 50 C. Silicalite-PFA composite membranes are promising for the production of oxygen-enriched air for various applications. Keywords poly furfuryl alcohol silicalite composite membrane air separation Introduction Oxygen-enriched air can be widely used in chemical industries fermentation biological digestion processes and medical purposes 1-3 . For example combustion with oxygen-enriched air can substantially reduce fuel consumption and improve energy efficiency thereby lowering CO2 emission 2 . The cryogenic fractionation technology is commonly used to produce oxygen-enriched air with an oxygen purity of 99 vol. . Pressure swing adsorption can yield 95 to 97 vol. oxygen-enriched air 4 . The membrane technology has also been researched for oxygen separation from air. Over the past decades polymeric gas separation membranes have attracted much attention becoming one of the fastest growing branches of membrane technology. This is because polymeric membranes tend to be relatively inexpensive and can be easily .
