NEW EQUATIONS FOR KINETIC-ANALYSIS OF NONISOTHERMAL REACTIONS

Kinetic equations of the form ln[g(alpha)/T(c'')] = ln[AE/phiR] + c'- c'' ln E - c'''(E/T) are proposed for the evaluation of activation par ameters from non-isothermal experiments. The values of c', c'' and c'' ' have been derived using the already established linear dependence of (i) the logarithm of the Arrhenius temperature integral In p(x) on x (= E/RT), (ii) its slope on x-1, and (iii) its intercept on ln x, resp ectively. The ln p(x) values were computed from the recently proposed series and the closed-form three-term approximations. The kinetic para meters computed with the proposed equations show better agreement for theoretical TG curves than do the well known methods. The equations ha ve equal practical significance in the kinetic analysis of non-isother mal processes.