Synthesis and non-isothermal decomposition of Copper(II) complex under dynamic Nitrogen atmosphere

Abstract

The compound of E-2-(2-hydroxybenzylideneamino)4-methylpentanoic acid and its complex were prepared characterized by the FT-IR technique, TG, and DTA. TG and DTA curves show that the copper(II) complex were decomposed into two steps. The formation of respective metal oxide and charcoal are the main residue, which is confirmed by a negative sulphate test. The thermodynamic parameters, apparent energy of activation E a and pre-exponential a are determined using model fitting ( Coats-Redfern (CR), model-free ( Friedman, Kissinger-Akahira-Sunose (KAS), Flynn-Wall-Ozawa (FWO) methods. From the 15 models discussed by model-fitting method, ten models give a good correlation (P2, P3, P4, F1, F2, A2, A3, A4, R2, and R3) for stage I and seven models give a good correlation (F1, D2, A2, A3, A4, R2, and R3) for stage II. For stage, I and stage II are decomposed by F2 and A3 model functions.