Thermal Behaviour

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Massao Ionashiro - One of the best experts on this subject based on the ideXlab platform.

  • Synthesis, characterization and Thermal Behaviour of heavy trivalent lanthanide malonates
    Eclética Química, 2010
    Co-Authors: José Roberto Locatelli, Cláudio Teodoro De Carvalho, Flávio Junior Caires, Massao Ionashiro
    Abstract:

    Solid-state Ln-L compounds, where Ln stands for heavy trivalent lanthanides (Tb-Lu) and L is malonate, have been synthesized. Simultaneous thermogravimetry and differential Thermal analysis (TG-DTA), differential scanning calorimetry (DSC), X-ray powder diffractometry, infrared spectroscopy, TG-FTIR system, elemental analysis and complexometry were used to characterize and to study the Thermal Behaviour of these compounds. The dehydration of the compounds begins at 303 K and the anhydrous compounds are stable up to 548 K. The results also provided information concerning the ligand's denticity, Thermal Behaviour and identification of some gaseous products evolved during the Thermal decomposition of these compounds.

  • Synthesis, characterization and Thermal Behaviour of heavy lanthanide and yttrium pyruvates in the solid state
    Journal of Thermal Analysis and Calorimetry, 2009
    Co-Authors: Adriano Buzutti De Siqueira, Cláudio Teodoro De Carvalho, E. C. Rodrigues, E. Y. Ionashiro, Gilbert Bannach, Massao Ionashiro
    Abstract:

    Solid-state Ln–L compounds, where Ln stands for heavy trivalent lanthanides or yttrium (III) (Tb–Lu, Y) and where L is pyruvate, have been synthesized. Thermogravimetry and derivative thermogravimetry (TG/DTG), differential scanning calorimetry (DSC), X-Ray powder diffractometry, infrared spectroscopy, elemental analysis and complexometry were used to characterize and to study the Thermal Behaviour of these compounds. The results led to information about the composition, dehydration, Thermal Behaviour, ligand denticity of the isolated complexes.

  • Synthesis, characterization and Thermal Behaviour of solid 2-methoxybenzoates of trivalent metals
    Journal of Thermal Analysis and Calorimetry, 2008
    Co-Authors: Adriano Buzutti De Siqueira, Cláudio Teodoro De Carvalho, E. C. Rodrigues, E. Y. Ionashiro, Gilbert Bannach, Massao Ionashiro
    Abstract:

    Solid-state Ln(L)3 compounds, where Ln stands for trivalent Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu and Y and L is 2-methoxybenzoate have been synthesized. Simultaneous thermogravimetry and differential Thermal analysis (TG-DTA), differential scanning calorimetry (DSC), X-ray powder diffractometry, infrared spectroscopy and complexometry were used to characterize and to study the Thermal Behaviour of these compounds. The results provided information on the composition, dehydration, coordination mode, structure, Thermal Behaviour and Thermal decomposition.

  • Synthesis, characterization and Thermal Behaviour on solid pyruvates of light trivalent lanthanides
    Eclética Química, 2007
    Co-Authors: Adriano Buzutti De Siqueira, Cláudio Teodoro De Carvalho, E. C. Rodrigues, E. Y. Ionashiro, Gilbert Bannach, Massao Ionashiro
    Abstract:

    Solid State Ln-L compounds, where Ln stands for light trivalent lanthanides (La - Gd) and L is pyruvate, have been synthesized. Thermogravimetry and derivative thermo- gravimetry (TG/DTG), differential scanning calorimetry (DSC), X-Ray powder diffractometry, infrared spectroscopy, elemental analysis, and complexometry were used to characterize and to study the Thermal Behaviour of these compounds. The results led to information about the composition, dehy- dration, ligand denticity, Thermal Behaviour and Thermal decomposition of the isolated compounds.

M. K. Rotich - One of the best experts on this subject based on the ideXlab platform.

  • Modelling the Thermal Behaviour of carboxylic acid derivatives with cylcodextrins in the solid-state
    Journal of Thermal Analysis and Calorimetry, 2004
    Co-Authors: S. Agotonovic-kustrin, B. D. Glass, M E Brown, M. K. Rotich
    Abstract:

    The application of classical QSAR and molecular modelling to the inclusion complexation of natural and modified cyclodextrins (CDs) with carboxylic acid derivatives as guest molecules was examined. Information was available on the Thermal Behaviour, in the solid-state of benzoic acid (BA), salicylic acid (SA), and various substituted aminosalicylic acids (3-aminosalicylic acid, 3-ASA, 4-aminosalicylic acid, 4-ASA and 5-aminosalicylic acid, 5-ASA), as well as on the Thermal Behaviour of 1:1 molar ratio physical and kneaded mixtures of these acids with each of three different cyclodextrins, β-, (BCD) 2-hydroxypropyl-β-, (HPBCD) and γ-cyclodextrin (GCD). The Thermal Behaviour of the binary (1:1 stoichiometry) mixtures was modelled using stepwise multiple regression (SMR). Two models for the prediction of the percentage mass loss and enthalpy of dehydration of the physical mixtures were established with correlation coefficients ( r ) of 0.79 and 0.92, respectively. Decreased correlation in the Thermal Behaviour of kneaded mixtures indicated significant interaction and possible formation of inclusion complexes.

Adriano Buzutti De Siqueira - One of the best experts on this subject based on the ideXlab platform.

  • Synthesis, characterization and Thermal Behaviour of heavy lanthanide and yttrium pyruvates in the solid state
    Journal of Thermal Analysis and Calorimetry, 2009
    Co-Authors: Adriano Buzutti De Siqueira, Cláudio Teodoro De Carvalho, E. C. Rodrigues, E. Y. Ionashiro, Gilbert Bannach, Massao Ionashiro
    Abstract:

    Solid-state Ln–L compounds, where Ln stands for heavy trivalent lanthanides or yttrium (III) (Tb–Lu, Y) and where L is pyruvate, have been synthesized. Thermogravimetry and derivative thermogravimetry (TG/DTG), differential scanning calorimetry (DSC), X-Ray powder diffractometry, infrared spectroscopy, elemental analysis and complexometry were used to characterize and to study the Thermal Behaviour of these compounds. The results led to information about the composition, dehydration, Thermal Behaviour, ligand denticity of the isolated complexes.

  • Synthesis, characterization and Thermal Behaviour of solid 2-methoxybenzoates of trivalent metals
    Journal of Thermal Analysis and Calorimetry, 2008
    Co-Authors: Adriano Buzutti De Siqueira, Cláudio Teodoro De Carvalho, E. C. Rodrigues, E. Y. Ionashiro, Gilbert Bannach, Massao Ionashiro
    Abstract:

    Solid-state Ln(L)3 compounds, where Ln stands for trivalent Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu and Y and L is 2-methoxybenzoate have been synthesized. Simultaneous thermogravimetry and differential Thermal analysis (TG-DTA), differential scanning calorimetry (DSC), X-ray powder diffractometry, infrared spectroscopy and complexometry were used to characterize and to study the Thermal Behaviour of these compounds. The results provided information on the composition, dehydration, coordination mode, structure, Thermal Behaviour and Thermal decomposition.

  • Synthesis, characterization and Thermal Behaviour on solid pyruvates of light trivalent lanthanides
    Eclética Química, 2007
    Co-Authors: Adriano Buzutti De Siqueira, Cláudio Teodoro De Carvalho, E. C. Rodrigues, E. Y. Ionashiro, Gilbert Bannach, Massao Ionashiro
    Abstract:

    Solid State Ln-L compounds, where Ln stands for light trivalent lanthanides (La - Gd) and L is pyruvate, have been synthesized. Thermogravimetry and derivative thermo- gravimetry (TG/DTG), differential scanning calorimetry (DSC), X-Ray powder diffractometry, infrared spectroscopy, elemental analysis, and complexometry were used to characterize and to study the Thermal Behaviour of these compounds. The results led to information about the composition, dehy- dration, ligand denticity, Thermal Behaviour and Thermal decomposition of the isolated compounds.

Cláudio Teodoro De Carvalho - One of the best experts on this subject based on the ideXlab platform.

  • Synthesis, characterization and Thermal Behaviour of heavy trivalent lanthanide malonates
    Eclética Química, 2010
    Co-Authors: José Roberto Locatelli, Cláudio Teodoro De Carvalho, Flávio Junior Caires, Massao Ionashiro
    Abstract:

    Solid-state Ln-L compounds, where Ln stands for heavy trivalent lanthanides (Tb-Lu) and L is malonate, have been synthesized. Simultaneous thermogravimetry and differential Thermal analysis (TG-DTA), differential scanning calorimetry (DSC), X-ray powder diffractometry, infrared spectroscopy, TG-FTIR system, elemental analysis and complexometry were used to characterize and to study the Thermal Behaviour of these compounds. The dehydration of the compounds begins at 303 K and the anhydrous compounds are stable up to 548 K. The results also provided information concerning the ligand's denticity, Thermal Behaviour and identification of some gaseous products evolved during the Thermal decomposition of these compounds.

  • Synthesis, characterization and Thermal Behaviour of heavy lanthanide and yttrium pyruvates in the solid state
    Journal of Thermal Analysis and Calorimetry, 2009
    Co-Authors: Adriano Buzutti De Siqueira, Cláudio Teodoro De Carvalho, E. C. Rodrigues, E. Y. Ionashiro, Gilbert Bannach, Massao Ionashiro
    Abstract:

    Solid-state Ln–L compounds, where Ln stands for heavy trivalent lanthanides or yttrium (III) (Tb–Lu, Y) and where L is pyruvate, have been synthesized. Thermogravimetry and derivative thermogravimetry (TG/DTG), differential scanning calorimetry (DSC), X-Ray powder diffractometry, infrared spectroscopy, elemental analysis and complexometry were used to characterize and to study the Thermal Behaviour of these compounds. The results led to information about the composition, dehydration, Thermal Behaviour, ligand denticity of the isolated complexes.

  • Synthesis, characterization and Thermal Behaviour of solid 2-methoxybenzoates of trivalent metals
    Journal of Thermal Analysis and Calorimetry, 2008
    Co-Authors: Adriano Buzutti De Siqueira, Cláudio Teodoro De Carvalho, E. C. Rodrigues, E. Y. Ionashiro, Gilbert Bannach, Massao Ionashiro
    Abstract:

    Solid-state Ln(L)3 compounds, where Ln stands for trivalent Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu and Y and L is 2-methoxybenzoate have been synthesized. Simultaneous thermogravimetry and differential Thermal analysis (TG-DTA), differential scanning calorimetry (DSC), X-ray powder diffractometry, infrared spectroscopy and complexometry were used to characterize and to study the Thermal Behaviour of these compounds. The results provided information on the composition, dehydration, coordination mode, structure, Thermal Behaviour and Thermal decomposition.

  • Synthesis, characterization and Thermal Behaviour on solid pyruvates of light trivalent lanthanides
    Eclética Química, 2007
    Co-Authors: Adriano Buzutti De Siqueira, Cláudio Teodoro De Carvalho, E. C. Rodrigues, E. Y. Ionashiro, Gilbert Bannach, Massao Ionashiro
    Abstract:

    Solid State Ln-L compounds, where Ln stands for light trivalent lanthanides (La - Gd) and L is pyruvate, have been synthesized. Thermogravimetry and derivative thermo- gravimetry (TG/DTG), differential scanning calorimetry (DSC), X-Ray powder diffractometry, infrared spectroscopy, elemental analysis, and complexometry were used to characterize and to study the Thermal Behaviour of these compounds. The results led to information about the composition, dehy- dration, ligand denticity, Thermal Behaviour and Thermal decomposition of the isolated compounds.

S. Agotonovic-kustrin - One of the best experts on this subject based on the ideXlab platform.

  • Modelling the Thermal Behaviour of carboxylic acid derivatives with cylcodextrins in the solid-state
    Journal of Thermal Analysis and Calorimetry, 2004
    Co-Authors: S. Agotonovic-kustrin, B. D. Glass, M E Brown, M. K. Rotich
    Abstract:

    The application of classical QSAR and molecular modelling to the inclusion complexation of natural and modified cyclodextrins (CDs) with carboxylic acid derivatives as guest molecules was examined. Information was available on the Thermal Behaviour, in the solid-state of benzoic acid (BA), salicylic acid (SA), and various substituted aminosalicylic acids (3-aminosalicylic acid, 3-ASA, 4-aminosalicylic acid, 4-ASA and 5-aminosalicylic acid, 5-ASA), as well as on the Thermal Behaviour of 1:1 molar ratio physical and kneaded mixtures of these acids with each of three different cyclodextrins, β-, (BCD) 2-hydroxypropyl-β-, (HPBCD) and γ-cyclodextrin (GCD). The Thermal Behaviour of the binary (1:1 stoichiometry) mixtures was modelled using stepwise multiple regression (SMR). Two models for the prediction of the percentage mass loss and enthalpy of dehydration of the physical mixtures were established with correlation coefficients ( r ) of 0.79 and 0.92, respectively. Decreased correlation in the Thermal Behaviour of kneaded mixtures indicated significant interaction and possible formation of inclusion complexes.

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