| http://www.w3.org/ns/prov#value | - While the method and product disclosed herein is illustrated in particular with metal oxide ceramic membranes of titanium, zirconium, and a mixture of the two, it has been described previously by others in the field that methods proven to be effective with titanium may also be adapted for use with other metallic oxides, such as those of silicon, aluminum, niobium and other transition metals.
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