Casado-Coterillo Clara, Fernández-Barquín Ana, Valencia Susana, Irabien Ángel
Department of Chemical and Biomolecular Engineering, Universidad de Cantabria, Av. Los Castros s/n, 39005 Santander, Spain.
Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Av. de los Naranjos s/n, 46022 Valencia, Spain.
Membranes (Basel). 2018 Jun 16;8(2):32. doi: 10.3390/membranes8020032.
In the present work, the effect of zeolite type and topology on CO₂ and N₂ permeability using zeolites of different topology (CHA, RHO, and LTA) in the same Si/Al = 5, embedded in poly(trimethylsilyl-1-propyne) (PTMSP) is evaluated with temperature. Several models are compared on the prediction of CO₂/N₂ separation performance and then the modified Maxwell models are selected. The CO₂ and N₂ permeabilities through these membranes are predicted with an average absolute relative error (AARE) lower than 0.6% taking into account the temperature and zeolite loading and topology on non-idealities such as membrane rigidification, zeolite⁻polymer compatibility and sieve pore blockage. The evolution of this structure⁻performance relationship with temperature has also been predicted.
在本工作中，研究了在相同硅铝比（Si/Al = 5）下，将不同拓扑结构（CHA、RHO和LTA）的沸石嵌入聚（三甲基硅基-1-丙炔）（PTMSP）中时，沸石类型和拓扑结构对二氧化碳和氮气渗透率随温度的影响。比较了几种模型对二氧化碳/氮气分离性能的预测，然后选择了修正的麦克斯韦模型。考虑到温度、沸石负载量以及诸如膜硬化、沸石-聚合物相容性和筛孔堵塞等非理想因素，预测了这些膜对二氧化碳和氮气的渗透率，平均绝对相对误差（AARE）低于0.6%。还预测了这种结构-性能关系随温度的变化。
