In this work, uniform and nanosize(75nm) silicalite-1 crystals was hydrothermally synthesized by using 9TPAOH:0.16NaOH:25Si:495H2O solution at 80 ℃. They were applied as seed in the secondary growth process for preparing silicalite-1 membrane by template-free method. The highest ethanol/water separation factor of 119 with flux 0.58kg/m². Furthermore, these membranes (nano seed, template free silicalite-1 membrane) exhibit high permselectivity of He over SF6(123), and small gas permeation mechanism and Knudsen diffusion studies suggest that the membranes contain negligible intercrystalline or non-zeolite pores.

• 후시구이(충남대학교 에너지과학기술대학원 에너지과학기술학과) | Sigui Hu
• Pankaj Sharma(충남대학교 에너지과학기술대학원 에너지과학기술학과)
• 한문희(충남대학교 에너지과학기술대학원 에너지과학기술학과) | Moon-Hee Han
• 조철희(충남대학교 에너지과학기술대학원 에너지과학기술학과) | Churl-Hee Cho