C1 Gas & Carbon Convergent Research Center, Korea Research Institute of Chemical Technology, Daejeon, 34114, Korea.
Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul, 03722, Korea.
Nat Commun. 2023 Mar 25;14(1):1673. doi: 10.1038/s41467-023-37298-y.
Generation of water as a byproduct in chemical reactions is often detrimental because it lowers the yield of the target product. Although several water removal methods, using absorbents, inorganic membranes, and additional dehydration reactions, have been proposed, there is an increasing demand for a stable and simple system that can selectively remove water over a wide range of reaction temperatures. Herein we report a thermally rearranged polybenzoxazole hollow fiber membrane with good water permselectivity and stability at reaction temperatures of up to 400 °C. Common reaction engineering challenges, such as those due to equilibrium limits, catalyst deactivation, and water-based side reactions, have been addressed using this membrane in a reactor.
在化学反应中生成水通常是有害的，因为它会降低目标产物的收率。尽管已经提出了几种除水方法，如使用吸收剂、无机膜和额外的脱水反应，但人们越来越需要一种稳定而简单的系统，该系统可以在很宽的反应温度范围内选择性地除水。在此，我们报告了一种热重排聚苯并恶唑中空纤维膜，该膜在高达 400°C 的反应温度下具有良好的水选择透过性和稳定性。该膜在反应器中解决了常见的反应工程挑战，例如由于平衡限制、催化剂失活和基于水的副反应等问题。
