Oblate spheroid cohesion body of tabular synthetic hydrotalcite

摘要

(57) Abstract The synthetic hydrotalcite cohesion body which substantially possesses with the form of oblate spheroid condition and the even spherical diameter to approximately 60 millimicrons is disclosed. This cohesion body is formed from the individual tabular grain which approximately possesses the plate diameter of 0.05 - approximately 10 millimicrons. This material low tatsuputo density, has high pore volume and the high specific surface. It discloses also the production manner of this product. The aqueous solution of dissolved magnesium salt and the aluminum salt where product granularity is decided by the agitation speed of reaction temperature and pH and the reaction blend, the addition speed and concentration of the reactant as for the reactant, from approximately 2.5:1 is mixed at mol ratio to the 4:1; It includes with the excessive carbonate and the basic solution which the base in order approximately to maintain the reaction blend in 8.5 - approximately 9.5 pH includes.