2,4-二羟基二苯甲酮合镍(Ⅱ)配合物的合成及热分解动力学研究  

Studies on Synthesis and Thermal Decomposition Kineties of Nickel(Ⅱ) Complex of 2,4-Dihydroxydiphenylmethone

作　　者：魏先红[1] 李萍[1] 

机构地区：[1]湖北师范学院化学与环境工程系,湖北黄石435000

出　　处：《化学世界》2006年第8期463-466,共4页Chemical World

摘　　要：合成了一种新的镍(Ⅱ)配合物Ni(C13H9O3)2.2H2O,并用元素分析I、R、UV和摩尔电导分析等手段对配合物进行了表征,用热重-差热法(TG-DTG)研究了配合物的热分解动力学,得到第二步的动力学方程。结果表明,配体中羰基氧、邻位羟基氧与金属离子配位,金属离子与配体的化学计量比为1∶2。配合物在动态空气气氛中第二步热分解由机理函数f(α)=1-α控制,反应速率方程为:dα/dt=5.295×109[exp(-105.61×103)/RT]×(1-α)。A new complex of Nickel（ Ⅱ ） was synthesized and characterized by elemental analysis, IR, UV spectrum and electrical conductivity. The non-isothermal kinetics of thermal decomposition of the complex under dynamic air atmosphere was studied by TG-DTG technique. The results showed that the stoichiometric ratio of metal and ligand is 1 ： 2（M：BP） and the ligand coordinates through the oxygen atom of - C = O and para - OH groups. The second step of thermal decomposition of the complex accords with f（ α ） = 1 -α mechanism. The kinetic equation obtained was da/dt = 5.295×10^9[exp（-105.61×10^3）/RT]×（1-α）.

关 键 词：2 4-二羟基二苯甲酮 镍(Ⅱ)配合物 合成与表征 热分解 非等温动力学 

分 类 号：TQ413.24[化学工程]