Patent ID: 8501664

Claim:
A process for treating a carrier, or a precursor thereof, to at least partly remove impurities from the carrier, or the precursor thereof, comprising: contacting the carrier, or the precursor thereof, with a treatment solution consisting essentially of a salt in a concentration of at least 0.001 molar and less than 0.015molar at a temperature of greater than 40° C., wherein the salt comprises a cation selected from the group consisting of Group IIA metals, ammonium, phosphonium, organic cations and combinations thereof, and an anion selected from halides, organic anions, inorganic carboxylates, oxyanions of elements from Groups IIIB to VIIB, Group IIIA, and Groups VA to VIIA of the Periodic Table of Elements, cyanate, isocyanate, cyanide, and combinations thereof; and separating at least part of the treatment solution from the carrier, or the precursor thereof.