Hydrate alumina and aluminium oxide whisker research - Appropriate chemical industry

alumina has a lot of wide range of USES, alumina factory to study the influences of different conditions on the product, the alcohol salt water solution and alcohol saline solution and hydrothermal synthesis method of combining the different hydrated alumina was synthesized.

the alumina factory of the two kinds of method, the hydrate alumina and its effect on the properties of alumina on the basis of the comparison research, using hydrothermal synthesis method with cetyl trimethyl ammonium bromide as the template agent synthesis of alumina and hydrate alumina whisker.

alcohol saline solution method, hydrated alumina as thin diaspore, by IR, XRD, TEM and TG analysis results show that the proposed synthesis by thin diaspore, grain size is small, poor crystallinity, surface rendering flocculent, contain more water, contains both physical adsorption of water and water containing layers structure.

with alcohol and water, salt water solution of the combination of thermal synthesis method, the hydrate alumina in hot water temperature of 140, you can get good crystallinity and crystal growth of thin diaspore, the morphology of diamond plate, with the increase of hydrothermal temperature and hydrolysis time, the size of the diamond chip has grown up, almost does not contain physical adsorption of water, only water containing layers structure.

by hydrothermal synthesis method of combining the salt water and alcohol solution, solves the brine by alcohol solution of alumina hydrate is poor, poor dispersion and morphology, the crystallinity of irregular problem, and can make the hydration alumina narrow particle size distribution, surface area increased.

by thin diaspore was & gamma; - - - - - - Al2O3 lower crystallinity, crystal is not perfect, morphology of irregular mass of flocculent, made by thin diaspore & gamma; - - - - - - Al2O3 crystallinity increase, crystallization, morphology by no rules flocculent mass into better dispersion and morphology of diamond plate.

factory by hydrothermal synthesis method of alumina hydrate alumina and aluminum oxide whisker was synthesized, under certain conditions, shape the rules, & gamma; - - - - - - Al2O3 surface is pore structure, and & alpha; - - - - - - Al2O3 whisker is composed of many small spherical particles of regularly arranged.