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Basalt–Alumina Ceramic Composite Membranes Incorporating UiO-66-NH2 and PES for Highly Effective CO2/N2 Separation
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DOI：10.1002/cnma.70316.png)
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Abstract
En 中文
The major source of climate change is the massive emissions of carbon dioxide (CO2) into the atmosphere. A successful capture or separation of CO2 is of significant environmental and economic importance. Membrane separation technology has been of great recognition as it offers minimal energy demand, industrial scale-up, and resistance to chemical and physical abrasion. Here, novel composite ceramic PES-UiO-66-NH2/PEDOT: PSS@Basalt+Al2O3 membranes for CO2/N2 separation were prepared, which contained 5, 10, 15, and 20 wt% UiO-66-NH2. The structure, the morphology, the porosity, the functional groups, and the thermal stability of the membrane were evaluated using various characterization methods. The influence of the UiO-66-NH2 loading on the characteristics of the materials was studied. Additionally, the effect of temperature and pressure was examined. It was found that the UiO-66-NH2 loading modifies the properties and improves the membranes’ performance. Among the membranes tested, PES-UiO-66-NH2/PEDOT: PSS@Basalt + Al2O3 membrane, which contains 15 wt% UiO-66-NH2, demonstrates the most superior performance in CO2 separation. At 7 bar and 35 °C, it achieves CO2 permeance (PCO2) of 64,656 GPU and CO2/N2 selectivity (αCO2/N2) of 15.22. These results highlight the suitability of the as-prepared membrane for carbon capture technology.
Keywords:
basalt + Al2O3 ceramic support layer
CO2/N2 separation
composite ceramic membrane
gas permeation
UiO-66-NH2
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