Pyridine, CO and SO 2 were used as probes to characterize the mixed oxides Al 2O 3/SiO 2 by TPD technique. XRD study showed mullite was the major composition of the mixed oxides. The tail gases were analyzed by gas ch...
The composite nanocrystallites with mullite as the main crystalline phase was prepared from kaolin by hydrothermal method after a series of treatments. The influences of feed composition, heat treatment of kaolin, cry...