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首页> 外文期刊>Zeitschrift fur Naturforschung, B. A Journal of Chemical Sciences >Untersuchungen zum quasibinaren System Bi_2Te_3/BiCl_3
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Untersuchungen zum quasibinaren System Bi_2Te_3/BiCl_3

机译:准二元系统Bi_2Te_3 / BiCl_3的研究

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The phase diagram of the pseudobinary sytem Bi_2Te_3/BiCl_3 was investigated by DTA, total pressure measurements, and X-ray phase analysis. Only BiTeCl exists as a ternary phase in this system. The compound melts incongruently at 430 deg C. The heat of formation and the standard entropy of BiTeCl were calculated from vapor pressure data: #DELTA#H_B deg (BiTeCl, f, 298) = (-39, 5+-1, 6) kcal/mol; S deg (BiTeCl, f, 298) = (34, 4+-2, 7) cal/K centre dot mol. The heat of formation of BiCl_3 was determined on the basis of the heat of solution of BiCl_3 and Bi_2O_3, and the heat of formation of Bi_2O_3: #DELTA#_B deg (BiCl_3, f, 298) = (-95, 9+-0, 9) kcal/mol.
机译:通过DTA,总压力测量和X射线相分析研究了伪二元系统Bi_2Te_3 / BiCl_3的相图。该系统中只有BiTeCl作为三元相存在。该化合物在430摄氏度下熔融不均匀。BiTeCl的形成热和标准熵由蒸气压数据计算得出:#DELTA#H_B deg(BiTeCl,f,298)=(-39,5 + -1,6)千卡/摩尔; S deg(BiTeCl,f,298)=(34,4 + -2,7)cal / K中心点摩尔数。根据BiCl_3和Bi_2O_3的溶液热以及Bi_2O_3的形成热确定BiCl_3的形成热:#DELTA#_B deg(BiCl_3,f,298)=(-95,9 + -0 ,9)kcal / mol。

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