NaVO_3-Na_3PO_4-H_2O三元体系的等温相图和平衡液相物化性质测定  

The isothermal phase diagram and physico-chemical properties of ternavy system NaVO_3-Na_3PO_4-H_2O

作　　者：周琳[1] 曾英[1] 彭芸[1] 李元波[1] 

机构地区：[1]成都理工大学材料与生物工程学院化学化工系,成都610059

出　　处：《化学研究与应用》2006年第5期551-553,共3页Chemical Research and Application

基　　金：四川省教育厅青年科学基金资助项目(2003B027);四川省应用基础研究基金资助项目(04JY029-008-1);中国地质调查局项目(200314200015)资助

摘　　要：The phase equilibrium and physicochemical properties（density,conductivity and pH value）of the ternary system NaVO3—Na3PO4—H2O were studied at 298 K by the isothermal dissolution method.According to the determined data,the phase diagram and composition-proerties-composition diagram were plotted.The isothermal solubility diagram of the ternary system consists of two univariant curves,one invariant point B,and two crystallization regions for salt Na3 PO>4·8H2O and NaVO3,respectively.No double salt or solid solution is formed.Physicochemical properties（density,conductivity and pH value）regularly change with the composition of solution.The phase equilibrium and physicochemical properties （density,conductivity and pH value）of the ternary system NaVO3-Na3PO4-H2O were studied at 298 K by the isothermal dissolution method. According to the determined data,the phase diagram and composition - proerties - composition diagram were plotted. The isothermal solubility diagram of the ternary system consists of two univarlant curves, one invariant point B, and two crystallization regions for salt Na2PO 〉 4· 8H2O and NaVO3, respectively. No double salt or solid solution is formed. Physicochemical properties （density, conductivity and pH value）regularly change with the composition of solution.

关 键 词：三元体系 相平衡 物化性质 

分 类 号：O642.42[理学—物理化学]