Facilitated transport separation of benzene and cyclohexane with poly(vinyl alcohol)-AgNO3 membranes

Abstract Facilitated transport membranes of poly(vinyl alcohol) containing Ag(I) ions as the carrier were prepared and characterized using ultraviolet-visible spectroscopy (UV-Vis), elemental analysis (ICP-AE), scanning electron microscopy (SEM), and SEM(EDXR). Transport experiments were performed using benzene/cyclohexane feed mixtures having volume ratios of 8 2 and 2 8 (v/v). Permeation rates for benzene ranged 0.5 – 5.5 kg μm m −2 h −1 and benzene/cyclohexane selectivities ranged 51–84. Effects on membrane performance of Ag(I) content, counter ion used, hydration, and degree of cross-linking were investigated.