The Ion-exchange Capacity of Ti and Zr Lamellar Hydrogenphosphates. TG measurements
作者： R. F de Farias , L. M. Nunes , C. Airoldi
关键词: Thermogravimetry 、 Thermogravimetric analysis 、 Zirconium phosphate 、 Thermal analysis 、 Chemistry 、 Analytical chemistry 、 Ion exchange 、 Potentiometric titration 、 Lamellar structure 、 Inorganic chemistry 、 Cation-exchange capacity
摘要: 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 calculated for these compounds 7.81, 5.67, 6.33 5.56 α-TiP, γ-TiP, α-ZrP γ-ZrP, respectively. These values are good agreement with those found through potentiometric titration. obtained prove that thermogravimetric measurements can be as a reliable analytical tool follow ion-exchange capacity this kind crystalline compounds.
springer.com
akademiai.com参考文章(14)
Jean-Marie Lehn, JL Atwood, JED Davies, DD MacNicol, F Vögtle, Comprehensive Supramolecular Chemistry ,(1996)
R. F. de Farias, C. Airoldi, Thermogravimetry as a Reliable tool to Estimate the Density of Silanols on a Silica Gel Surface Journal of Thermal Analysis and Calorimetry. ,vol. 53, pp. 751- 756 ,(1998) , 10.1023/A:1010174224567
R. Llavona, J.R. García, M. Suárez, J. Rodríguez, Synthesis of γ-titanium phosphate. study of the solids obtained by using water or acetone as washing agents Thermochimica Acta. ,vol. 86, pp. 281- 289 ,(1985) , 10.1016/0040-6031(85)87056-8
Shoji Okuno, Gen-etsu Matsubayashi, Preparation and spectroscopies of layered zirconium organophosphonates containing pyridinium and its derivative cations Inorganica Chimica Acta. ,vol. 233, pp. 173- 177 ,(1995) , 10.1016/0020-1693(95)04461-H
U. Costantino, A. La Ginestra, On the existence of pyrophosphates of tetravalent metals having a layered structure Thermochimica Acta. ,vol. 58, pp. 179- 189 ,(1982) , 10.1016/0040-6031(82)87080-9
Maria A Massucci, Pasquale Patrono, Anthony A.G Tomlinson, Aldo La Ginestra, Carla Ferragina, Coordination of Co2+, Ni2+ and Cu2+ to 2,9 - dimethyl - 1,10 phenanthroline intercalated in α-zirconium phosphate: Evidence for dimers Materials Research Bulletin. ,vol. 22, pp. 29- 36 ,(1987) , 10.1016/0025-5408(87)90146-2
A. La Ginestra, M.A. Massucci, Titanium and zirconium acid phosphate dihydrates: thermal behaviour and phase changes of their hydrogen, sodium and strontium forms Thermochimica Acta. ,vol. 32, pp. 241- 256 ,(1979) , 10.1016/0040-6031(79)85112-6
Anatoly Bortun, Enrique Jaimez, Ricardo Llavona, JoséR. García, Julio Rodríguez, Formation of crystalline titanium(IV) phosphates from titanium(III) solutions Materials Research Bulletin. ,vol. 30, pp. 413- 420 ,(1995) , 10.1016/0025-5408(95)00019-4
Liliane M. Nunes, Claudio Airoldi, Structure Features And Thermochemistry Of The Intercalation Of Pyridine And α-, β-, And γ-picolines Into Crystalline α-titanium Hydrogen Phosphate Chemistry of Materials. ,vol. 11, pp. 2069- 2075 ,(1999) , 10.1021/CM981133A
Claudio Airoldi, Sirlei Roca, Calorimetric study of intercalation of n-alkyldiamines into α-titanium hydrogenphosphate Journal of Materials Chemistry. ,vol. 6, pp. 1963- 1966 ,(1996) , 10.1039/JM9960601963