| http://www.w3.org/ns/prov#value | - Accordingly, the above compositions of matter and contact materials contain from an effective amount of free or excess sodium, potassium, Group IA metal, or Group IIA metal to near 100%, so long as an effective amount of electrically neutral compounds of the titanium and oxygen, such as titanium oxides, sodium, potassium or Group IA metal titanates and/or Group IIA metal titanates are present.
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