The sediment product has specific area about 200m2/g,the experimentation product has specific area about 400m2/g,and the ludox product has specific area about 450m2/g.

• 沉淀产物的比表面积为 2 0 0m2 /g左右 ; 实验产物比表面积为 4 0 0m2 /g左右 ;