摘要
测定了三元体系La(ClO4)3-OCBAAP-H2O在30℃时的溶解度.结果表明,该体系有一个新固相(不一致溶解化合物)La(OCBAAP)4(ClO4)3·6H2O形成.参考该体系溶度图确定合成条件,合成了系列化合物Ln(OCBAAP)4(ClO4)3·nH2O(Ln=La,n=6;Ln=Pr,Nd,Sm,Gd,Yb,n=2).通过化学分析、元素分析、TG-DTG、IR和密度对化合物进行了表征,计算了La(OCBAAP)4(ClO4)3热分解过程各阶段的表观活化能.
The solubilities of ternary system La(ClO 4) 3 OCBAAP 4 ( o chlorobenzoyl) aminoantipyrine, C 18 H 16 N 3O 2Cl H 2O at 30 ℃ were determined. The new solid phase (incongruent compound), La(OCBAAP) 4(ClO 4) 3·6H 2O , was discovered in the system. Based on the solubility diagram, the synthesis condition was defined, and compounds Ln(OCBAAP) 4\5(ClO 4) 3· n H 2O(Ln=La, n =6; Ln=Pr, Nd, Sm, Gd, Yb, n =2) were synthesized. The compounds were characterized by chemical analysis, elemental analysis, TG DTG, IR spectra and density respectively. Apparent activation energy of thermal decomposition of La(OCBAAP) 4(ClO 4) 3 has been calculated.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1998年第12期1886-1890,共5页
Chemical Journal of Chinese Universities
基金
北京大学稀土材料化学及应用国家重点实验室基金
关键词
三元体系
溶度
相平衡
高氯酸镧
OCBAAP
Ternary system
Solubility
Phase equilibrium
Lanthanum perchlorate
4 ( o Chlorobenzoyl)aminoantipyrine