Mullite bonded SiC ceramic membranes were synthesized by a facile solid-state reaction process, using SiC, solid waste fly ash as raw materials and MoO₃ as catalyst for growth of mullite at 1000 °C. The effect of MoO₃ catalyst on mullitization reaction and mullite morphology was investigated. Different pore formers were used to enhance the porosity and to observe its effects on the permeability parameters and filtration characteristics. At room temperature Darcian (k₁) and non-Darcian (k₂) in both water and air flow were measured and clean water flux was determined. The porous SiC ceramics with addition of 5 wt.% MoO₃ exhibited a flexural strength of 38.4 MPa at porosity 36.4 vol% and showed 92% oil removal efficiency from oily wastewater. This technique, combining low-cost materials and the co-sintering at low temperature, can serve as a cost-effective method for the production of high-performance porous SiC ceramic membrnaes for filtration application.

以SiC，固体粉煤灰为原料，以MoO ₃为催化剂，在1000°C下生长莫来石，通过简便的固相反应工艺合成了莫来石粘结SiC陶瓷膜。研究了MoO ₃催化剂对莫来石反应和莫来石形态的影响。使用不同的成孔剂来提高孔隙率并观察其对渗透率参数和过滤特性的影响。在室温下，测量水和空气流量中的Darcian（k ₁）和非Darcian（k ₂），并确定净水通量。添加了5 wt。％MoO ₃的多孔SiC陶瓷在孔隙率为36.4 vol％时，抗弯强度为38.4 MPa，对含油废水的除油效率为92％。该技术结合了低成本材料和低温共烧结技术，可作为生产用于过滤应用的高性能多孔SiC陶瓷膜的一种经济高效的方法。