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Indexed by:期刊论文

Date of Publication:2008-02-06

Journal:INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

Included Journals:SCIE、EI

Volume:47

Issue:3

Page Number:876-880

ISSN No.:0888-5885

Abstract:Carbon molecular sieve membranes (CMSMs) were prepared from a novel polymeric precursor of poly(phthalazinone ether sulfone ketone) by thermostabilization in air at 400-500 degrees C and carbonization at 650-850 degrees C. Gas permeation properties of the resultant CMSMs were investigated with four pure gases, H-2, CO2, O-2, and N-2, and a gas mixture of O-2 and N-2. The obtained CMSMs exhibited excellent gas separation performance. The temperatures of thermostabilization and carbonization had a large effect on the gas permeability and selectivity of the CMSMs. The CMSMs thermostabilized at 460 degrees C and carbonized at 650 degrees C. showed the highest permeabilities for pure gases [P-H2 = 1016.4 barrer (1 barrer = 10(-10) cm(3) (STP).cm.cm(-2).s(-1).cmHg(-1)), P-CO2 = 710.3 barter, P-O2 = 187.8 barrer, P-N2 = 13.9 barter] and the O-2/N-2 mixture (P-O2 = 165 barrer, P-N2 = 10.8 barter). The CMSMs thermostabilized at 460 degrees C and carbonized at 850 degrees C presented the highest selectivities for pure gases (P-H2/P-N2 = 129.2, P-CO2/P-N2 = 93. 1; P-O2/P-N2 = 21.9) and O-2/N-2 mixture (P-O2/P-N2 = 23.6).