Details

Autor(en) / Beteiligte

• Wang, Feihong
• Hao, Shanshan
• Dong, Binbin
• Ke, Nianwang
• Khan, Noor Zamin
• Hao, Luyuan
• Yin, Liangjun
• Xu, Xin
• Agathopoulos, Simeon

Titel

Porous-foam mullite-bonded SiC-ceramic membranes for high-efficiency high-temperature particulate matter capture

Ist Teil von

• Journal of alloys and compounds, 2022-02, Vol.893, p.162231, Article 162231

Ort / Verlag

Lausanne: Elsevier B.V

Erscheinungsjahr

2022

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Membranes of ceramic foams exhibit excellent prospects for application in the field of high-temperature particulate matter (PM) capture. Production of ceramic membranes that can achieve good removal efficiency as well as low pressure drop in high-efficiency PM filtration represents a great challenge. This paper reports on the preparation of porous-foam mullite-bonded SiC-ceramic membranes (MSCMs) with a 3D interconnecting pore network by a direct foaming method combined with gel-tape casting. The produced MSCMs contained large pores with a diameter of 60–150 µm, which were interconnected with abundant small functional (for filtering) pores of<10 µm. Increasing the amount of the foaming agent favored the increase of porosity of the MSCMs, which was tailored between 69.2% and 84.1%, while the bending strength decreased from 10.3 to 4.0 MPa, respectively. High PM filtration efficiency (70.2%, 90.1%, and 94.6% for PM0.3, PM2.5, and PM10, respectively) and ultra-low pressure drop (27 Pa) were also recorded. Hence, the produced MSCMs qualify for application as high-temperature PM filters. This work also aims at providing a new insight into developing high-efficiency air filters. [Display omitted] •The membrane has tailored pore structure and the preparation method is simple, easy to achieve mass production.