AMORPHOUS SILICA, PRODUCTS THEREOF AND METHODS OF PREPARING THE SAME

摘要

The present invention provides a shaped body of amorphous silica comprising primary particles of amorphous silica randomly three-dimensionally interlocked with one another integrally into the body and voids interspersed therebetween, each of the primary particles having a crystalline appearance, at least two surfaces in symmetric relation, a length of about 1 to about 500.mu., and a thickness of about 50 .ANG. to about 1.mu., the length being at least about 10 times the thickness. The silica particles are useful for the adsorption of gases and water, have high oil adsorbing capacity and provide light weight shaped bodies of high mechanical strength and acid resistance.