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Surface Modification with Phosphoric Acid of SiO 2 /Nb 2 O 5 Prepared by the Sol−Gel Method: Structural−Textural and Acid Sites Studies and an Ion Exchange Model

✍ Scribed by Francisco, M. S. P.; Cardoso, W. S.; Gushikem, Y.; Landers, R.; Kholin, Y. V.

No coin nor oath required. For personal study only.

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