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Enthalpy of Exchange or Intercalation A,,,H°,/kJ mol7' for Alpha Titanium Hydrogenphosphate Derivates of Potassium (TPK), Calcium (TPCa), Barium (TPBa), Lanthanum (TPLa), n-Butylamine (TPBA), and Pyridine (TPPy) at 298.15 K

Table 1 Enthalpy of Exchange or Intercalation A,,,H°,/kJ mol7' for Alpha Titanium Hydrogenphosphate Derivates of Potassium (TPK), Calcium (TPCa), Barium (TPBa), Lanthanum (TPLa), n-Butylamine (TPBA), and Pyridine (TPPy) at 298.15 K

Related Figures (6)

FIG. 1. X-ray diffraction patterns of the matrices: (a) TPH, (b) TPBA, ‘c) TPPy, (d) TPK, (e) TPCa, (f) TPBa, and (g) TPLa.
FIG. 1. X-ray diffraction patterns of the matrices: (a) TPH, (b) TPBA, ‘c) TPPy, (d) TPK, (e) TPCa, (f) TPBa, and (g) TPLa.
FIG. 2. Thermogravimetric curve for the TPH matrix obtained under argon atmosphere.
FIG. 2. Thermogravimetric curve for the TPH matrix obtained under argon atmosphere.
For TPK, TPBa, and TPLa matrices, the mass loss due to the condensation of OH groups occurs in two steps differing from TPBA and TPPy, where three mass loss steps were observed. The second one is due to the release of the organic moiety; the first and the third steps are related to the same process observed for the original precursor.
For TPK, TPBa, and TPLa matrices, the mass loss due to the condensation of OH groups occurs in two steps differing from TPBA and TPPy, where three mass loss steps were observed. The second one is due to the release of the organic moiety; the first and the third steps are related to the same process observed for the original precursor.
FIG. 3. Thermogravimetric curves for the TPK (a), TPCa (b), TPBa (c), TPLa (d), TPBA (e), and TPPy (f) matrices obtained under argon atmosphere.
FIG. 3. Thermogravimetric curves for the TPK (a), TPCa (b), TPBa (c), TPLa (d), TPBA (e), and TPPy (f) matrices obtained under argon atmosphere.
Activation Energy (£,) and the Corresponding Frequency Factor (A) for the Thermal Degradation, as Obtained by Ther- mogravimetric Data for Alpha Titanium Hydrogenphosphate (TPH) and the Derivates of Potassium (TPK), Calcium (TPCa), Barium (TPBa), Lanthanum (TPLa), n-Butylamine (TPBA), and Pyridine (TPPy) matrices
Activation Energy (£,) and the Corresponding Frequency Factor (A) for the Thermal Degradation, as Obtained by Ther- mogravimetric Data for Alpha Titanium Hydrogenphosphate (TPH) and the Derivates of Potassium (TPK), Calcium (TPCa), Barium (TPBa), Lanthanum (TPLa), n-Butylamine (TPBA), and Pyridine (TPPy) matrices
FIG. 4. Enthalpy of exchange or intercalation A,,,H%, as a function of the activation energy, E,, for TPK, TPCa, TPBa, TPLa, TPBA, and TPPy matrices.
FIG. 4. Enthalpy of exchange or intercalation A,,,H%, as a function of the activation energy, E,, for TPK, TPCa, TPBa, TPLa, TPBA, and TPPy matrices.
Related topics:
ThermodynamicsChemistryInorganic ChemistryLamellar StructureIonic Exchange
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