有机硅涂层非对称芳香聚酰胺干膜气体分离

A. Tabe Mohammadi , T. Matsuura, S. Sourirajan
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引用次数: 14

摘要

研究了有机硅包覆芳香族聚酰胺膜对氦、氢、氧、氮、二氧化碳和甲烷等纯气体的渗透速率,以及对CO2/CH4混合气体的分离。计算了聚合物对这些气体的理想分离系数和实际分离系数。采用反相技术制备膜,干燥后涂覆硅橡胶。涂层对He、H2和CO2的渗透速率影响不显著,而N2和CH4气体的渗透速率降低到流量计的检测极限以下。涂层后O2的渗透速率降低。CO2/CH4混合物的实际分离因子在64 ~ 166之间,是文献报道的最高分离因子之一。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Gas separation by silicone-coated dry asymmetric aromatic polyamide membranes

A study was made on the permeation rate of pure gases including helium, hydrogen, oxygen, nitrogen, carbon dioxide and methane, and the separation of CO2/CH4 gas mixtures by a silicone-coated aromatic polyamide membrane. The ideal and actual separation factors of the polymer towards these gases were calculated. The membranes were prepared by the phase-inversion technique and coated with silicone rubber after drying. While the permeation rates of He, H2 and CO2 were not affected significantly by coating, the permeation rates of N2 and CH4 gases decreased to below the detectable limit of the flow meter. The permeation rate of O2 decreased after coating. The actual separation factor for mixtures of CO2/CH4 varied from 64 to 166, one of the highest separation factors reported in the literature.

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