ANDERSON-TYPE HETEROPOLYANIONS

摘要

The preparation of Anderson-type heteropolyanions that are more economical and environmentally attractive, as well as more suitable for industrial, large-scale production, is disclosed generally comprising the steps of providing at least one solid source of a polyvalent metal Me, heat treating the at least one solid source of a polyvalent metal Me, and contacting the heat treated polyvalent metal Me with an aqueous solution of at least one source of a transition metal TM, wherein the polyvalent metal Me is not the same as the transition metal TM, and wherein the atomic ratio TM:Me is at least about 2.5.