Thermal decomposition reaction mechanism of the precursor gel made by sol gel process for nano crystalline BaTiO3 was studied by TG DTG and FTIR techniques.The reaction proceeded in three stages:solvents removing,orga...Thermal decomposition reaction mechanism of the precursor gel made by sol gel process for nano crystalline BaTiO3 was studied by TG DTG and FTIR techniques.The reaction proceeded in three stages:solvents removing,organic ligands decomposing,and amorphous solid BaTiO3 forming.The differential and intergral mechanism functions and activation energy for the third stage were obtained by calculation and comparson.展开更多
The whole process of the thermal decomposition of GAP was investigated by thermolysis MS,TG DTG FTIR, in situ thermolysis FTIR coupling techniques,and possible mechanisms of GAP′s thermal decomposition is proposed. I...The whole process of the thermal decomposition of GAP was investigated by thermolysis MS,TG DTG FTIR, in situ thermolysis FTIR coupling techniques,and possible mechanisms of GAP′s thermal decomposition is proposed. It has been proved that the major decomposition products in the gas phase include N 2,NH 3,HCHO,HCN, H 2C CO etc. In the condensed phase,the formation of some aromatic intermediates was observed,and when temperature raised to 450 ℃,the characteristic absorbances of aromatics disappeared and a black brown residue was formed.展开更多
文摘Thermal decomposition reaction mechanism of the precursor gel made by sol gel process for nano crystalline BaTiO3 was studied by TG DTG and FTIR techniques.The reaction proceeded in three stages:solvents removing,organic ligands decomposing,and amorphous solid BaTiO3 forming.The differential and intergral mechanism functions and activation energy for the third stage were obtained by calculation and comparson.
文摘The whole process of the thermal decomposition of GAP was investigated by thermolysis MS,TG DTG FTIR, in situ thermolysis FTIR coupling techniques,and possible mechanisms of GAP′s thermal decomposition is proposed. It has been proved that the major decomposition products in the gas phase include N 2,NH 3,HCHO,HCN, H 2C CO etc. In the condensed phase,the formation of some aromatic intermediates was observed,and when temperature raised to 450 ℃,the characteristic absorbances of aromatics disappeared and a black brown residue was formed.
