| http://www.w3.org/ns/prov#value | - Optionally, the molecular sieve catalyst composition contains a matrix material selected from the group consisting of : rare earth metals, non-active metal oxides including zirconia, magnesia, thoria, beryllia, quartz, silica, or sols, silica-magnesia, silica-zirconia, silica-alumina, silica-alumina- thoria, synthetic clays, montmorillonite, kaolinite, halloysite, dickite, nacrite, anauxite, lapon
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