The effect of hydrothermal treatment on the micromorphology of aluminum sulfate hydrolysis product

摘要

The sphere aluminum hydroxide sulfate and hollow sphere boehmite were synthesized by using urea as precipitator with Al_2(SO_4)_3·18H_2O as precursor via a hydrothermal method. The effects of hydrothermal temperature on micromorphology were studied. Results showed that sphere aluminum hydroxide sulfate could obtain on lower temperature. As the hydrothermal temperature increased, sphere aluminum hydroxide sulfate begin to dissolve in situ and recrystallize. In the end, hollow sphere boehmite assembled by flake was formed.