Study on thermochemistry and thermal decomposition kinetics of Dy(Tyr)(Gly)3Cl3•3H2O

The complex of dysprosium chloride with glycine and L-tyrosine, Dy(Tyr)(Gly)(3)Cl(3)(.)3H(2)O, was synthesized and characterized. The standard molar formation enthalpy of Dy(Tyr)(Gly)(3)Cl(3)(.)3H(2)O at T=298.15 K was determined to be (-4287.10 +/- 2.14) kJ/mol. The kinetics of thermal decomposition of the complex was studied by non-isothermal TG-DTG curves. The kinetic parameters and mechanism function of the thermal decomposition reaction for its second step were proposed. The kinetic equation could be expressed as: da/dT=3.14 X 10(20) S-1/,beta exp(- 209.37 kJ(.)mol(.1)/RT)(1 -alpha)(2).