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Type: Artigo de periódico
Title: Ion-exchange Capacity Of Ti And Zr Lamellar Hydrogenphosphates Tg Measurements
Author: De Farias R.F.
Nunes L.M.
Airoldi C.
Abstract: Thermogravimetric data were used to calculate the number of acidic Bronsted sites in lamellar α-titanium (α-TiP), γ-titanium (γ-TiP), α-zirconium (α-ZrP) and γ-zirconium (γ-ZrP) hydrogenphosphates. The numbers of acidic sites calculated for these lamellar compounds were 7.81, 5.67, 6.33 and 5.56 for α-TiP, γ-TiP, α-ZrP and γ-ZrP, respectively. These values are in good agreement with those found through potentiometric titration. The data obtained prove that thermogravimetric measurements can be used as a reliable analytical tool to follow the ion-exchange capacity of this kind of crystalline lamellar compounds.
Editor: Kluwer Academic Publishers, Dordrecht, Netherlands
Rights: fechado
Identifier DOI: 10.1023/A:1010186719282
Date Issue: 2000
Appears in Collections:Unicamp - Artigos e Outros Documentos

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