α-Al2O3-supported ZIF-8 SURMOF membranes: Diffusion mechanism of ethene/ethane mixtures and gas separation performance
| Autor: | Roland Dittmeyer, Katja Haas-Santo, Wenjin Ding, Edgar Hansjosten, Hartmut Gliemann, Christof Wöll, Elvia P. Valadez Sánchez, Jonas Wohlgemuth |
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| Rok vydání: | 2020 |
| Předmět: |
Technology
Materials science Discretization Diffusion Liquid phase Filtration and Separation 02 engineering and technology Permeation 010402 general chemistry 021001 nanoscience & nanotechnology Epitaxy 01 natural sciences Biochemistry 0104 chemical sciences Membrane Chemical engineering General Materials Science Thermal stability Gas separation Physical and Theoretical Chemistry 0210 nano-technology ddc:600 |
| Zdroj: | Journal of membrane science, 594, 117421 |
| ISSN: | 0376-7388 1873-3123 |
| DOI: | 10.1016/j.memsci.2019.117421 |
| Popis: | Metal-organic frameworks have been proven to offer the possibility of fabricating highly permeable and selective membranes. ZIF-8 is one of the most studied, attractive, and promising candidates given its known thermal stability and small pores connected by narrow sized windows of around 3.4 A. In this paper, liquid phase epitaxial (LPE) layer-by-layer (LBL) ZIF-8 SURMOF membranes were tested for gas separation of various binary feed mixtures of ethene/ethane (C2H4/C2H6) using the Wicke-Kallenbach technique. Permeation experiments of ethene or ethane in the presence of sweep gas were also conducted. A simulation program based on the generalized Maxwell-Stefan model was also used to analyze the separation performance of the SURMOF film in more detail. Its implementation consists in a discretization of the membrane, using then experimental and literature data in order to simulate the molar fluxes. |
| Databáze: | OpenAIRE |
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