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Citation: Zheng Chaogui, Jin Jun, Qiao Zhiyu, Ye Yupu. AN INVESTIGATION ON PHASE DIAGRAM OF TERNARY SYSTEM PrCl₃-BaCl₂-LiCl[J]. Acta Physico-Chimica Sinica, ;1989, 5(02): 173-177. doi: 10.3866/PKU.WHXB19890209 shu

AN INVESTIGATION ON PHASE DIAGRAM OF TERNARY SYSTEM PrCl₃-BaCl₂-LiCl

1.
Department of Chemistry; Peking University

Received Date: 9 September 1987
Available Online: 15 April 1989

The phase diagram of ternary system PrCl_3-BaCl_2-LiCl has been investigated by means of DTA and X-ray diffraction analysis. It is found that there are 5 surfaces corresponding to the primary crystallization of PrCl_3, α-BaCl_2, β-BaCl_2,LiCl and Ba_3PrCl_9 respectively and 6 univariant lines related to the secondary crystallization in this system.The two reactions occurred in this system are:
L<=>LiCl+PrCl_3+Ba_3PrCl_9
E(72.1wt%PrCl_3, 2.8wt%BaCl_2, 25.1wt%LiCl; Temp.441℃)
L+△β-BaCl_2<=>Ba_3PrCl_9+LiCl
P(62.5wt%PrCl_3, 12.5wt%BaCl_2, 25.0wt%LiCl; Temp.490℃)
A compound, formed in the solid state, was found. The temperature of decomposition occures at 430℃.
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AN INVESTIGATION ON PHASE DIAGRAM OF TERNARY SYSTEM PrCl₃-BaCl₂-LiCl