The reactivity of metallic palladium in a K₂CO₃-K₂O-B₂O₃ melt is investigated as a function of heating temperature and time. The aqueous solubility of heat-treated palladium is enhanced by controlling the heating conditions leading to an optimum palladium extraction of 53% from the heat-treated product. The alumina crucible used as a reactor partially dissolves during the heating of metallic Pd, which requires the analysis of palladium solubilization to be discussed in terms of K₂CO₃-K₂O-B₂O₃-Al₂O₃ system. Oxidized palladium combines with boron and aluminum oxyanions as ligands in the molten medium to form water-soluble palladium compounds. Information regarding water-soluble palladium compounds was obtained by analyzing the precipitate collected from the palladium-containing solution produced by water-leaching of the heat-treated product. The precipitate contained Pd (0.19 wt%), Al (0.74 wt%), B (2.6 wt%), and K (45 wt%). Raman spectroscopy confirmed the presence of oxidized palladium in the precipitate. Aluminum oxyanions with AlO₄ and AlO₆ structures and boron oxyanions as diborate groups also were detected in the precipitate.

研究了金属钯在K ₂ CO ₃ -K ₂ O-B ₂ O ₃熔体中的反应性与加热温度和时间的关系。通过控制加热条件，可提高热处理后钯的水溶解度，从而使最佳钯从热处理产物中的提取率达到53％。用作反应器的氧化铝坩埚在金属Pd加热期间会部分溶解，这需要对钯的增溶分析进行K ₂ CO ₃ -K ₂ O-B ₂ O ₃ -Al ₂ O _{3的讨论。}系统。氧化钯与硼和铝氧阴离子作为配体在熔融介质中结合形成水溶性钯化合物。通过分析从通过热处理产物的水浸出而产生的含钯溶液中收集到的沉淀物，可以获得有关水溶性钯化合物的信息。沉淀物包含Pd（0.19重量％），Al（0.74重量％），B（2.6重量％）和K（45重量％）。拉曼光谱法证实沉淀物中存在氧化的钯。在沉淀物中还检测到具有AlO ₄和AlO ₆结构的铝氧阴离子和硼氧阴离子作为二硼酸酯基。