Mullite fiber porous ceramic with high quality factor for high-temperature PM filtration

被引:11
作者
Zhu, Jiaxin [1 ]
Zhu, Ruijian [2 ]
Hu, Yuwen [1 ]
Wang, Zengmei [1 ]
机构
[1] Southeast Univ, Sch Mat Sci & Engn, Jiangsu Key Lab Construct Mat, Nanjing 211189, Peoples R China
[2] Nanjing Inst Technol, Sch Mat Sci & Engn, Jiangsu Key Lab Adv Struct Mat & Applicat Technol, Nanjing 211167, Peoples R China
关键词
Mullite fiber; Porous ceramic; PM filtration; Thermal conductivity; FIBROUS CERAMICS; HIGH-STRENGTH; COMPOSITE; MEMBRANE; NETWORK; MICROSTRUCTURE; FABRICATION; MORTALITY; BEHAVIOR;
D O I
10.1016/j.jeurceramsoc.2023.11.064
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Porous ceramic filters with high porosity and high filtration are in urgent need of high-temperature gas filtration. Here a lightweight and low thermal conductivity mullite fiber porous ceramic filter was prepared through vacuum filtration method using solution blow spun mullite fiber as the matrix material and silica sol as the high-temperature binder. Mullite fiber porous ceramic with a mass ratio of 10:1 has uniform pore structure, low density (0.58 g cm-3), high porosity (78.11%), high compressive strength (1.79 MPa), as well as low thermal conductivity (0.095 W m-1 K- 1) at a sintering temperature of 1300 degrees C. When the air flow is 6 L min-1, the pressure drop is 180 Pa, the filtration efficiency of PM2.5 and PM10-2.5 is 98.85% and 99.61%, respectively, and the filtration quality factor is 0.025 Pa-1. The mullite fiber porous ceramic filter have outstanding quality factor, which has broad application prospects in high-temperature gas filtration.
引用
收藏
页码:2630 / 2637
页数:8
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