引用本文:
王宏琳, 杨大令, 张守海, 王志鹏, 闻学秋, 蹇锡高. 分离丙烯/丙烷的超薄聚电解质中空纤维复合膜的制备[J]. 应用化学,
2007, 24(3): 241-244.
Citation: WANG Hong-Lin, YANG Da-Ling, ZHANG Shou-Hai, WANG Zhi-Peng, WEN Xue-Qiu, JIAN Xi-Gao. Preparation of Thin-layer Hollow Fiber Polymer Electrolyte Composite Membrane for Propylene and Propane Separation[J]. Chinese Journal of Applied Chemistry, 2007, 24(3): 241-244.
Citation: WANG Hong-Lin, YANG Da-Ling, ZHANG Shou-Hai, WANG Zhi-Peng, WEN Xue-Qiu, JIAN Xi-Gao. Preparation of Thin-layer Hollow Fiber Polymer Electrolyte Composite Membrane for Propylene and Propane Separation[J]. Chinese Journal of Applied Chemistry, 2007, 24(3): 241-244.
分离丙烯/丙烷的超薄聚电解质中空纤维复合膜的制备
摘要:
以含二氮杂萘联苯结构的聚芳醚砜酮PPESK(Tg为263~305℃)为膜材料,以干-湿纺丝技术制备基膜,外涂法涂覆聚电解质(聚乙烯基吡咯烷酮PVP)并络合Ag+离子,制备了超薄皮层中空纤维复合膜,皮层厚度约为1μm。研究了复合膜聚电解质涂层PVP质量分数、Ag+含量、气体压力差、测试温度和不同过渡金属离子等对复合膜丙烯/丙烷分离性能的影响。结果表明,在压力为200kPa、温度为23℃下,当PVP质量分数为10%、n(Ag+):n(C=O)=1:1的条件下,复合膜对丙烯渗透率可达16.32GPU,分离系数为4.79。
English
Preparation of Thin-layer Hollow Fiber Polymer Electrolyte Composite Membrane for Propylene and Propane Separation
Abstract:
A substrate membrane of polyphthalazinone ether sulfone ketone(PPESK) with special morphology was spun, and the asymmetric hollow-fiber membranes was formed though dry/wet spinning. The composite membrane with thin layer(≈1 μm) was successfully prepared by coating PVP and complexing silver ion. The influences of PVP concentration, mole ratio of Ag+ to C=O, operational pressure and tempe-rature, types of transition metals were systematically studied. At 200 kPa and 23℃, the propylene permeance was 16.32 GPU, and propylene/propane selectivity reached 4.79 when the concentration of PVP was 10% and mole ratio of Ag+ to C=O was 1.
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Key words:
- PPESK
- / hollow fiber
- / composite membrane
- / polymer electrolyte
- / transition metal
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