“...One of the materials that is currently highlighted are the compounds of niobium, because they have...”
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“... were synthesized composite oxyhydroxide niobium/ vermiculite through deposition-precipitation method...”
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“... that are currently highlighted are niobium compounds, in particular, its oxides, by its characteristics such as high...”
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“... oxyhydroxide niobium and by the method of deposition-precipitation it was obtained composites formed from...”
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