MgAl-水滑石热分解过程动力学研究  

Study on thermal decomposition process of MgAl-hydrotalcite

作　　者：胡秋霞[1] 谢鲜梅[1] 严凯[1] 席晶晶[1] 王志忠[1] 

机构地区：[1]太原理工大学化学化工学院,山西太原030024

出　　处：《化学研究与应用》2007年第12期1370-1374,共5页Chemical Research and Application

基　　金：山西自然科学基金资助项目(20001015)

摘　　要：MgAl-HTLc compounds with different molar ratio were synthesized by the method of coprecipitation at 10℃·min-1 teating rate.Non-isothermal kinetics of thermal decomposition process were studied by TG-DTG thermal analysis method in nitrogen atmosphere.It was discovered that the thermal decomposition proceeded in three stages when n(Mg)/n(Al)=1 while in two stages when n(Mg)/n(Al)=2-6.The non-isothermal kinetic parameters were calculated by Freeman-Carrol method.MgAl-HTLc compounds with different molar ratio were synthesized by the method of coprecipitation at 10℃ min^-1 teating rate. Non-isothermal kinetics of thermal decomposition process were studied by TG-DTG thermal analysis method in nitrogen atmosphere. It was discovered that the thermal decomposition proceeded in three stages when n（ Mg）/n（Al） =1 while in two stages when n（ Mg）/n（Al） = 2-6. The non-isothermal kinetic parameters were calculated by Freeman-Carrel method.

关 键 词：水滑石 热分解 动力学 

分 类 号：O643.13[理学—物理化学]