Effects of CO2 on a High Performance Hollow-Fiber Membrane for Natural Gas Purification
Effects of CO2 on a High Performance Hollow-Fiber Membrane for Natural Gas Purification
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DOI：
10.1021/ie100084s
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发表时间：
2010-04
影响因子：
4.2
通讯作者：
Imona C. Omole;R. Adams;Stephen J. Miller;W. Koros
中科院分区：
文献类型：
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作者：
Imona C. Omole;R. Adams;Stephen J. Miller;W. Koros
基于 6FDA 的可交联聚酰亚胺的特征是无缺陷的不对称中空纤维膜。这种新型膜在不同温度下进行交联，并在高二氧化碳分压下进行天然气净化测试。交联膜材料对 CO2 和 CH4 显示出较高的固有分离性能（选择性 ~49，CO2 渗透性 ~161 barrer，进料压力为 65 psia、35 °C 和 10% CO2）。由该材料制成的交联不对称中空纤维膜表现出良好的耐二氧化碳诱导塑化性能。采用高达~400 psia 的二氧化碳分压，并且该膜在这些侵蚀性条件下表现出良好的稳定性。还使用双模式吸附/传输模型分析了膜的性能。
A 6FDA-based, cross-linkable polyimide was characterized in the form of a defect-free asymmetric hollow-fiber membrane. The novel membrane was cross-linked at various temperatures and tested for natural gas purification in the presence of high CO2 partial pressures. The cross-linked membrane material shows high intrinsic separation performance for CO2 and CH4 (selectivity ∼49, CO2 permeability ∼161 barrer, with a feed at 65 psia, 35 °C, and 10% CO2). Cross-linked asymmetric hollow-fiber membranes made from the material show good resistance to CO2-induced plasticization. Carbon dioxide partial pressures as high as ∼400 psia were employed, and the membrane was shown to be promisingly stable under these aggressive conditions. The performance of the membrane was also analyzed using the dual-mode sorption/transport model.