Ao De, Yang Zibo, Chen Aibing, Sun Yuxiu, Ye Mao, Tian Lei, Cen Xixi, Xie Zixi, Du Juan, Qiao Zhihua, Cheetham Anthony K, Hou Jingwei, Zhong Chongli
State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin, 300387, China.
Hebei Key Laboratory of Heterocyclic Compounds, Handan University, Handan, 056005, China.
Angew Chem Int Ed Engl. 2024 May 21;63(21):e202401118. doi: 10.1002/anie.202401118. Epub 2024 Apr 17.
Inorganic zeolites have excellent molecular sieving properties, but they are difficult to process into macroscopic structures. In this work, we use metal-organic framework (MOF) glass as substrates to engineer the interface with inorganic zeolites, and then assemble the discrete crystalline zeolite powders into monolithic structures. The zeolites are well dispersed and stabilized within the MOF glass matrix, and the monolith has satisfactory mechanical stabilities for membrane applications. We demonstrate the effective separation performance of the membrane for 1,3-butadiene (CH) from other C hydrocarbons, which is a crucial and challenging separation in the chemical industry. The membrane achieves a high permeance of CH (693.00±21.83 GPU) and a high selectivity over n-butene, n-butane, isobutene, and isobutane (9.72, 9.94, 10.31, and 11.94, respectively). This strategy opens up new possibilities for developing advanced membrane materials for difficult hydrocarbon separations.
无机沸石具有优异的分子筛性能，但难以加工成宏观结构。在这项工作中，我们使用金属有机框架（MOF）玻璃作为基底来设计与无机沸石的界面，然后将离散的结晶沸石粉末组装成整体结构。沸石在MOF玻璃基质中得到良好分散和稳定，并且该整体结构对于膜应用具有令人满意的机械稳定性。我们展示了该膜对1,3 - 丁二烯（CH）与其他C烃类的有效分离性能，这是化学工业中一项关键且具有挑战性的分离。该膜实现了CH的高通量（693.00±21.83 GPU）以及对正丁烯、正丁烷、异丁烯和异丁烷的高选择性（分别为9.72、9.94、10.31和11.94）。这种策略为开发用于难分离烃类的先进膜材料开辟了新的可能性。
