Morphology transcription process from CMC micelles to inorganogel and its effect on the properties of alumina particle

Such specific morphology of the precursor delayed phase transformation from transition- to α-alumina greatly, and the ability resistant to sintering was highly enhanced. At presence of CMC, the acicular alumina calcined at 1200 °C for 4 h had surface area of 79.6 m2 g−1, much higher than the spherical sample (50 m2 g−1) without CMC. Because of being straightforward, inexpensive and versatile, the approach could be potentially used to prepare other materials with controllable morphologies and might be potentially extended to mass-production.