镍(Ⅱ)含氮配体配合物的热分解研究

Calorimetric study and thermal analysis of nickel(Ⅱ) complexes with nitrogen-containing ligands

用非等温热重法研究了[N i(NH3)6]C l2、[N i(py)4]C l2、[N i(en)3]C l2、[N i(b ipy)2]C l2、[N i(phen)2]C l2五种配合物在氮气、氧气气氛下的热分解反应机理,比较得出了2种条件下5种配合物的热稳定性;并对配合物[N i(py)4]C l2在不同条件下特定分解阶段的非等温热重分析数据采用ACHAR法和COATS-REDFERN法进行了拟合,得出了相应分解阶段该配合物的热分解机理.

The kinetic mechanism of thermal decomposition of [ Ni （ NH3 ）6 ] Cl2, [ Ni （ py）4 ] Cl2, [ Ni（en） 3 ] Cl2, [ Ni （bipy） 2 ] Cl2 and [ Ni （phen） 2 ] Cl2 were studied by non-isothermally TG method in nitrogen and oxygen atomsphere. The data from non-isothermally experiments were analyzed by ACHAR and COATS- REDFERN method. The kinetic mechanism of thermal decomposition and the heat-stability of [Ni（py）4 ] Cl2 complex in two conditions were studied also.