The capture of CO 2 is of high interest in our society representing an essential tool to mitigate man-made climate warming. Membrane technology applied for CO 2 capture offers several advantages in terms of energy savings, simple operation, and easy scale-up. Glassy membranes are associated with low gas permeability that negatively affect on their industrial implementation. Oppositely, rubbery membranes offer high permeability, but their selectivity is low. Here we report rubbery organic frameworks (ROFs) combining the high permeability of soft matrices with the high sieving selectivity of molecular frameworks. The best performing membranes provide a CO 2 /N 2 selectivity up to 104 with a CO 2 permeability up to 1000 Barrer, representing relevant performances for industrial implementation. Water vapors have a positive effect on CO 2 permeability, and the CO 2 /N 2 selectivity is higher than in dry conditions, as most of CO 2 gas emissions are present in fully humidified gas streams. The synergetic high permeability/selectivity performances are superior to that observed with current state-of-the-art polymeric membranes.

中文翻译：

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橡胶状有机框架 （ROV） 针对超渗透 CO 2 选择性膜


二氧化碳的捕获在我们的社会中引起了高度关注，是缓解人为气候变暖的重要工具。用于 CO 2 捕获的膜技术在节能、操作简单和易于放大方面具有多项优势。玻璃膜与低透气性有关，这会对其工业实施产生负面影响。相反，橡胶膜具有高渗透性，但选择性较低。在这里，我们报道了橡胶状有机框架 （ROT），它结合了软基质的高渗透性与分子框架的高筛分选择性。性能最佳的膜提供高达 104 的 CO 2 /N 2 选择性和 1000 Barrer 的 CO 2 渗透性，代表了工业应用的相关性能。水蒸气对 CO 2 渗透率有积极影响，并且 CO 2 /N 2 选择性高于干燥条件，因为大部分 CO 2 气体排放存在于完全加湿的气流中。协同高渗透性/选择性性能优于当前最先进的聚合物膜所观察到的性能。