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期刊论文
Preparation and gas permeation properties of carbon molecular sieve membranes based on sulfonated phenolic resin
Journal of Membrane Science 217(2003)55-67,-0001,():
Effects of pyrolysis and preparation conditions on the gas permeation properties of pyrolytic membranes derived from sulfonated phenolic resin were investigated. Pyrolysis temperature, dip-coating conditions and coating/pyrolysis (C/P) cycle had significant influence on the gas permeation properties of pyrolytic membranes. Membrane obtained under optimum preparation conditions exhibited O2 permeance of 30 GPU and ideal O2/N2 separation factor of 12 at 35℃, which are comparable to the O2/N2 separation performances of carbon molecular sieve (CMS) membranes on the upper-bound line in the plots of permeance versus selectivity. N2 adsorption and desorption at 77K suggested that the pore structures of CMS membranes pyrolyzed around 500℃ seemed to be made up of interconnected pores with different size and shape.
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