Preparation and strengthening mechanisms of in-situ HF catalyzed highly porous mullite with whisker frame structureHaihong Zhang, Qi Wang, Jinhai Wang, Fangli Yu, Jianjiang Tang, Kuo Zhang and Zhigang ZhaoJNWPU, 39 1 (2021) 208-215DOI: https://doi.org/10.1051/jnwpu/20213910208