Abstract Ceramic membranes play an important role in high temperature gas-solid filtration. However, the thermal stability of the ceramic support at high temperatures has always been a problem. In this study, porous fused silica ceramic supports were fabricated with hexagonal boron nitride as a sintering aid. The results shown that hexagonal boron nitride could inhibit the crystallization of fused silica ceramic particles at high temperature and act as a sintering addictive to reduce firing temperature. The obtained supports have an average pore size of 72 µm, an open porosity of 42%, a bending strength of 16.5 MPa, a Weibull modulus of 8.67 and a gas permeability of 4.23 × 10 5 m 3 /(m 2 h bar). The bending strength of the support remained 16 MPa after 30 cold-hot cycles, exhibiting high thermal shock resistance. After corrosion in 20 vol% H 2 SO 4 solution for 8 h, the weight and the bending strength of the support were diminished by 0.6% and 24.32%, respectively. So, the ceramic support showed good acid corrosion resistance.

中文翻译：

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超通量高抗热震陶瓷膜支架的制作

摘要 陶瓷膜在高温气固过滤中发挥着重要作用。然而，陶瓷载体在高温下的热稳定性一直是个问题。在这项研究中，多孔熔融石英陶瓷载体是用六方氮化硼作为烧结助剂制造的。结果表明，六方氮化硼可以抑制熔融石英陶瓷颗粒在高温下的结晶，并作为烧结添加剂降低烧成温度。所得载体的平均孔径为72 μm，开孔率为42%，抗弯强度为16.5 MPa，威布尔模量为8.67，透气度为4.23×10 5 m 3 /(m 2 h bar)。经过 30 次冷热循环后，支撑体的弯曲强度保持在 16 MPa，表现出较高的抗热震性。在 20 vol% H 2 SO 4 溶液中腐蚀 8 h 后，支架的重量和抗弯强度分别降低了 0.6% 和 24.32%。因此，陶瓷载体表现出良好的耐酸腐蚀性。