Abstract

Chemical interactions of salts in the four-component reciprocal system comprised of chlorides, molybdates, and tungstates of sodium and strontium are studied by the ion-balance method. DTA heating curves feature exotherms due to the interaction of Na₂EO₄ + SrCl₂ (E = Mo,W) and Na₂MoO₄ + Na₂WO₄ + SrCl₂ homogenized powdery batches. Cooling curves feature exotherms indicating the formation of exchange reaction products upon crystallization of batches from NaCl + SrEO₄ melts in the Na⁺,Sr²⁺||Cl^–,\({\text{EO}}_{4}^{{2 - }}\) and NaCl + SrMo_xW_{1 – x}O₄ ternary reciprocal systems and in the Na⁺,Sr²⁺||Cl^–,\({\text{MoO}}_{4}^{{2 - }}\),\({\text{WO}}_{4}^{{2 - }}\) four-component reciprocal system. Reaction products are identified by X-ray powder diffraction. The presence of double compounds Na₃ClMoO₄ and Na₃ClWO₄ in reaction products in the Na⁺,Sr²⁺||Cl^–,\({\text{EO}}_{4}^{{2 - }}\) systems and the presence of Na₃ClMo_xW_{1 – x}O₄ solid solutions (ss) in the Na⁺,Sr²⁺||Cl^–,\({\text{MoO}}_{4}^{{2 - }}\),\({\text{WO}}_{4}^{{2 - }}\)system is considered in terms of divergence phenomena.

中文翻译：

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Na +，Sr 2+ || Cl –，$$ {\ text {EO}} _ {4} ^ {{2-}} $$（E = Mo，W）和Na +，Sr 2+中的化学相互作用|| Cl –，$$ {\ text {MoO}} _ {4} ^ {{2-}} $$，$$ {\ text {WO}} _ {4} ^ {{2-}} $$互惠系统：描述和研究

摘要

通过离子平衡法研究了盐在由氯化钠，钼酸盐以及钠和锶的钨酸盐组成的四组分互易体系中的化学相互作用。由于Na ₂ EO ₄ + SrCl ₂（E = Mo，W）和Na ₂ MoO ₄ + Na ₂ WO ₄ + SrCl ₂均质粉状粉末的相互作用，DTA加热曲线具有放热特征。冷却曲线设有指示的交换的反应产物在批次的结晶选自NaCl + SrEO形成放热_4个熔体以Na ⁺，SR ²⁺ ||氯^- ，\（{\ text {EO}} _ {4} ^ {{2-}} \）和NaCl + SrMo _x W _{1 – x} O ₄三元倒数系统，并且在Na ⁺，Sr ²⁺ || Cl ^–中，\（{\ text {MoO}} _ {4} ^ {{2-}} \），\（{\ text {WO}} _ {4} ^ {{2-}} \）四元互惠系统。通过X射线粉末衍射鉴定反应产物。Na ⁺，Sr ²⁺ || Cl ^–，\（{\ text {EO}} _ {4} ^ {{2-}}中的反应产物中存在双重化合物Na ₃ ClMoO ₄和Na ₃ ClWO ₄ \）系统和Na ⁺，Sr ²⁺ || Cl ^–，\（{\ text {MoO}} _ {4} ^ {{2}中存在的Na ₃ ClMo _x W _{1 – x} O ₄固溶体（ss）-}} \），\（{\ text {WO}} _ {4} ^ {{2-}} \）系统是根据发散现象来考虑的。