摘要
合成了两种具有层状钙钛矿结构的热致相变材料四氯合锌酸十二铵(n-C12H25NH3)2ZnCl4和四氯合锌酸十六铵(n-C16H33NH3)2ZnCl4,并在两种材料的乙醇溶液中结晶出一系列C12Zn-C16Zn二元体系。利用差热分析(DTA)和X射线衍射技术进行测定,构筑了C12Zn-C16Zn二元体系相图。在实验相图中确定了新的化合物(n-C12H25NH3)(n-C16H35NH3)ZnCl4的存在,并确定了两个不变的共析点,共析点温度分别为70和73℃。与同类体系的其他相图相比,在此相图的左右边界存在端际固溶体(α和β)和中间区域存在非化学计量相(γ)。
The perovskite type layer compound （n-C12 H25NH3）2ZnCl4 and （ n-C16H33NH3）2ZnCl4 with thermotropic phase transitions were synthesized and a series of their mixtures C12Zn-C16Zn were prepared. The experimental binary phase diagram of C12Zn-C16Zn was established by differential thermal analysis （DTA） and X-ray diffraction. In the phase diagram new materials （ n-12 H25 NH3 ） （ n-C16 H33 NH3 ） ZnCl4 and two eutectold invafiants were observed, two eutectic points temperatures are about 70 and 72 ℃. Contrasting other similar system, there are three noticeable solid solution ranges （α,β,γ） at the left and fight boundary and middle of the phase diagram.
出处
《稀有金属》
EI
CAS
CSCD
北大核心
2006年第2期164-167,共4页
Chinese Journal of Rare Metals
基金
河北省自然资金资助项目(202139)
关键词
四氯合锌酸十二烷基铵
四氯合锌酸十六烷基铵
相图
decylammonium tetrachlorozincate
octadecylammonium tetrachlorozincate
phase diagram
