COLLOID DISPERSION BASED ON CERIUM OXIDE AND TITANIUM OXIDE,ITS PREPARATION,ITS USE FOR COATING OF BASE MATERIAL AND BASE MATERIAL COATED THEREBY

摘要

Colloidal dispersion comprises colloids composed of a cerium oxide core which is at least partially covered by a layer of titanium oxide. The dispersion may also contain at least one metal chosen from Pd, W, Pt and Rh. Pref. the colloid size is 5-30nm; the weight ratio of cerium oxide to titanium oxide is 30/70 to 70/30; the proportion of suspended solid in the dispersion is 5-20wt.%.