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- W2052203758 abstract "A new polymeric precursor, poly(phthalazinone ether sulfone) (PPES), was used as precursor to prepare carbon membranes via stabilization and pyrolysis. The thermal stability of PPES was determined by thermogravimetry. The evolution of functional groups of membranes was monitored by ATR-FTIR during the formation process of carbon membranes. The carbon structure of the resultant carbon membranes was analyzed by X-ray diffraction technology. The gas permeation property of carbon membranes was tested by pure gases, H2, CO2, O2, and N2. The results show that PPES is a highly thermally stable polymer with the char yield of 38.2 wt % at 700 °C in nitrogen. The functional groups of PPES gradually disappeared by forming a graphite-like structure in the membrane matrix during pyrolysis. At the test condition of 0.1 MPa and 30 °C, the gas permeabilities of H2, CO2, O2, and N2 for carbon membranes prepared at the stabilization and pyrolytic temperature of 440 and 650 °C are 610.13, 439.90, 146.98, and 26.95 barrer (1 barrer = 10−10 cm3 (STP) cm/(cm2 s cmHg) = 3.35 × 10−16 mol m/(m2 s Pa)), together with the selectivities of gas pairs H2/N2, CO2/N2, and O2/N2 of 22.6, 16.3, and 5.5, respectively." @default.
- W2052203758 created "2016-06-24" @default.
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- W2052203758 date "2009-02-05" @default.
- W2052203758 modified "2023-09-25" @default.
- W2052203758 title "Preparation and Characterization of Carbon Membranes Derived from Poly(phthalazinone ether sulfone) for Gas Separation" @default.
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- W2052203758 doi "https://doi.org/10.1021/ie8013583" @default.
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