广州化工
廣州化工
엄주화공
GUANGZHOU CHEMICAL INDUSTRY AND TECHNOLOGY
2011年
18期
44-48
,共5页
郭满满%肖卓炳%彭密军%郭瑞轲
郭滿滿%肖卓炳%彭密軍%郭瑞軻
곽만만%초탁병%팽밀군%곽서가
层状钙钛矿%四氯合铜酸乙二胺%TG-DTG技术%热分解动力学
層狀鈣鈦礦%四氯閤銅痠乙二胺%TG-DTG技術%熱分解動力學
층상개태광%사록합동산을이알%TG-DTG기술%열분해동역학
layered perovskite%ethylenediamine tetrachlorocuprate%TG-DTG technique%thermal degradation kinetics
利用液相法合成了[NH3CH2CH2NH3][CuCl4],并对化合物的热稳定性、热分解及其动力学进行了研究。采用TG-DTG技术研究化合物[NH3CH2CH2NH3][CuCl4]的热分解,并应用微分法(Achar法)、Coast-Redfern法、Kissinger法、Ozawa法对非等温动力学数据进行处理,发现晶体的第一步分解是二维扩散反应,n=2,机理函数积分形式g(α)=[1-(1-α)1/2]2和微分形式f(α)=(1-α)1/2[1-(1-α)1/2]-1,表观活化能Ea=192.56 kJ.mol-1,指前因子A=2.13×1016s-1。标题化合物的第二步分解是化学反应,机理函数积分形式g(α)=(1-α)-1-1和微分形式f(α)=(1-α)2,表观活化能Ea=164.70 kJ.mol-1,指前因子A=2.90×1012s-1。
利用液相法閤成瞭[NH3CH2CH2NH3][CuCl4],併對化閤物的熱穩定性、熱分解及其動力學進行瞭研究。採用TG-DTG技術研究化閤物[NH3CH2CH2NH3][CuCl4]的熱分解,併應用微分法(Achar法)、Coast-Redfern法、Kissinger法、Ozawa法對非等溫動力學數據進行處理,髮現晶體的第一步分解是二維擴散反應,n=2,機理函數積分形式g(α)=[1-(1-α)1/2]2和微分形式f(α)=(1-α)1/2[1-(1-α)1/2]-1,錶觀活化能Ea=192.56 kJ.mol-1,指前因子A=2.13×1016s-1。標題化閤物的第二步分解是化學反應,機理函數積分形式g(α)=(1-α)-1-1和微分形式f(α)=(1-α)2,錶觀活化能Ea=164.70 kJ.mol-1,指前因子A=2.90×1012s-1。
이용액상법합성료[NH3CH2CH2NH3][CuCl4],병대화합물적열은정성、열분해급기동역학진행료연구。채용TG-DTG기술연구화합물[NH3CH2CH2NH3][CuCl4]적열분해,병응용미분법(Achar법)、Coast-Redfern법、Kissinger법、Ozawa법대비등온동역학수거진행처리,발현정체적제일보분해시이유확산반응,n=2,궤리함수적분형식g(α)=[1-(1-α)1/2]2화미분형식f(α)=(1-α)1/2[1-(1-α)1/2]-1,표관활화능Ea=192.56 kJ.mol-1,지전인자A=2.13×1016s-1。표제화합물적제이보분해시화학반응,궤리함수적분형식g(α)=(1-α)-1-1화미분형식f(α)=(1-α)2,표관활화능Ea=164.70 kJ.mol-1,지전인자A=2.90×1012s-1。
[NH3CH2CH2NH3] was prepared by the liquid phase method.Its thermal degradation kinetics was studied under the non-isothermal condition by TG-DTG technique.The non-isothermal kinetic datas were analyzed by means of the Achar method,Coats-Redfen method,Kissinger methed and Ozawa methed.The most possible reaction mechanisms was suggested by comparison of the kinetic parameters.The results showed that [NH3CH2CH2NH3] underwent a three-stage thermal decomposition process.The most probable kinetic mechanisms of the former two-stage thermal decomposition were two-dimensional diffusion and chemical reaction,and the corresponding mechanisms follew jander equation and reaction order.The differential and integral mechanism function were f(α)=(1-α)1/2[1-(1-α)1/2]-1,g(α)=[1-(1-α)1/2]2 at the first stage and f(α)=(1-α)2,g(α)=(1-α)-1-1 at the second stage,respectively.The activation energy Ea/(kJ·mol-1) of the former two stages were 192.56 and 164.70 and their A/(s-1) were 2.13×1016 s-1 and 2.90×1012 s-1,respectively.