【摘要】 本文测定了一水合碱式邻苯二甲酸氢镧LaOH（C₈H₅O₁）₂·H₂O的热重（TG）曲线,用红外光谱、气相色谱和质谱法表征了各步热分解产物,研究了其热分解反应机理.整个热分解过程分5步进行:LaOH（C₈H₅O₁）₂·H₂O→La₂（C₈H₄O₄）₃→La₁O（CO₃）₃（C₈H₄O₄）₂→La₂O（CO₃）₂→La₂O₂CO₃→La₂O₃.热分解的气相产物有邻苯二甲酸酐和9,10-蒽醌等.更多还原

【Abstract】 The thermal decomposition of lanthanum hydroxide dihydrogen diphthalate monohy-drate, LaOH (C8H6O4)2·H2O, was studied by thermogravimetric analysis. The products of thermal decomposition at various stages were characterized by infrared spectrometry,gas chro-matography and mass spectrography.The thermal decomposition of LaOH(C8H5O4)2·H2O proceeded in five stages. LaOH(C3H5O4)2·H2O-La2(C3H4O1)3-La4O(CO3)3(C8H4O4)2-La2O (CO3)2 La2O2CO3-La2O3,The phthalic anhydride ami 9,10-anthraquinone were formed as the condensates of gas phase products during the first and second stages, respectively.更多还原