| http://www.w3.org/ns/prov#value | - The cerium oxide particles in the present invention may be prepared, in the same manner as the abrasive grains of a rare earth oxide except cerium oxide, for example, by oxidizing a salt such as a hydroxide, an oxyhydroxide, a carbonate, a nitrate, a sulfate or an oxalate by firing or with e.g. hydrogen peroxide.
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