Study on Morphology of Industrial Grade Mg(OH)_2 Crystals Modified by Hydrothermal Method
Zheng Minzhu, Lu Hanfeng, Liu Huayan, Chen Yinfei (College of Chemical Engineering and Material Science, Zhejiang University of Technology, State key Laboratory Breeding Base of Green Chemistry Synthesis Technology, Hangzhou 310014)
A method of hydrothermal modification on industrial grade Mg(OH)_2 particles in ethanol, water and urea solution was investigated. Influence of morphology and size of hydrothermal products was studied. According to SEM, morphology and aggregation of Mg(OH)_2 crystals were improved greatly. Effects of urea solution was obvious, size was increased up to 10μm and morphology of Mg(OH)_2 was cube crystal at the temperature of 250℃.