Preparation and characterization of carbon molecular sieve membrane (CMSM) containing mesoporous nanoparticles
Novel pyrolytic carbon-silica membranes prepared by Poly(imide siloxane) block co-polymer were prepared in our previous studies. In this study, we introduced the Al2O3 nanoparticles to the carbon-silica membranes to improve the gas permeation performances. Poly(imide siloxane) containing 1 to 5wt％ of Al2O3 particle were prepared and pyrolyzed up to 1000 ℃ at inert atmosphere. The morphologies of the membrane were characterized using FE-SEM and TEM. The nitrogen adsorption/desorption measurement using BET method were used to prove the gas permeation performances to be related with the pore characteristics. As a result, the carbon-silica/alumina membrane prepared at 600 to 1000 ℃ showed increased permeability with the alumina composition. In summary, the carbon-silica-alumina membranes pyrolyzed at 600 ℃ showed the gas permeability for O2 of 464.3 Barrers 10 -10 cm 3 (STP)cm/cm 2 ?s?cmHg and the O2/N2 selectivity of 7.3 while the carbon-silica membranes showed the gas permeability for O2 of 190.7 Barrers and O2/N2 selectivity of 10.5.
Gas separation Membrane Carbon Carbon-silica Alumina Nanocomposite
Sang Hoon Han Gun Wook Kim Chul Ho Jung Min Soo Jung Tae Moon Kim Ho Bum Park Young Moo Lee
Department of Chemical Engineering, Hanyang University, Seoul 133-791, Korea Department of Chemical Engineering, University of Texas at Austin, TX 78758, USA
国际会议
The 5th International Conference on Separation Science and Technology(第五届国际分离科学与技术会议)
北京
英文
2007-10-14（万方平台首次上网日期，不代表论文的发表时间）