Particulate matter (PM) pollution has raised serious concerns for public health. FeAl intermetallic porous membrane with extensive interconnected pores are potential candidates as functional materials for high-temperature particulate matter (PM) capturing. However, it remains a big challenge to fabricate FeAl intermetallic porous membrane simultaneously satisfy the requirements of good formability and excellent filter fineness. Here, we introduce a FeAl/Al2O3 porous composite microfiltration membrane (PCMM) for highly efficiency high temperature flue gas purification. The FeAl/Al2O3 PCMM was fabricated by powder metallurgy method via the combination of mutual diffusion and chemical reaction. By separation of simulated high-temperature flue gas, we achieve an ultra-high PM removal efficiency (96.2% for PM2.5, and 99.3% for PM2.5–10, respectively). These features, combined with our experimental design strategy, provide a new insight into designing high-temperature PM filtration membrane materials with high performance and durability.
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The authors are grateful for the financial support from the Fundamental Research Funds for the Central Universities (NO. FRF-TP-19-080A1); China Postdoctoral Science Foundation (No. 2019M660452); National Natural Science Foundation of China (No. 51671016; No. 51831001) and Creative Research Groups of China (No. 51921001).
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Gui, W., Liang, Y., Dong, D. et al. FeAl/Al2O3 porous composite microfiltration membrane for highly efficiency high‐temperature particulate matter capturing. J Porous Mater (2021). https://doi.org/10.1007/s10934-021-01048-6
- FeAl/Al2O3 porous composite
- Microfiltration membrane
- Filtration and separation
- High temperature flue gas