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摘要
The thermal dehydration and decomposition kinetics of CH2(COO)(2)Cu center dot 2H(2)O were investigated using the non-isothermal method by thermogravimetry (TG) technique in N-2. The iterative iso-conversional methods were applied to calculate the activation energy Ea of dehydration and decomposition, and the most probable mechanism function G(alpha) was determined by means of the master plots method. The pre-exponential factor A was obtained on the basis of E-a and G(alpha). Kinetic parameters (E-a and InA) of dehydration were given as: E-a=139.79 kJ.mol(-1), ln(A/s(-1))= 47.38. The mechanism function of the dehydration was G(alpha)=[-ln(1-alpha)](2/3), and the decomposition of CH2(COO)(2)Cu proceeds to completion by two distinct reactions. These two reactions overlap in the transition process (0.45<alpha<0.65). Kinetic parameters (E-a and InA)of the first reaction of decomposition were: E-a=201.15 kJ.mol(-1), ln(A/s(-1))=52.29, and the mechanism function was G(alpha)=[1-alpha](-0.37). And in the second reaction G(alpha)=alpha+(1-alpha)ln(1-alpha), E-a=156.74 kJ.mol(-1), ln(A/s(-1))=39.58.
