Reactivity of metallic palladium in a K2CO3-K2O-B2O3-Al2O3 melt
Reactivity of metallic palladium in a K2CO3-K2O-B2O3-Al2O3 melt
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K2CO3-K2O-B2O3-Al2O3 熔体中金属钯的反应活性
DOI:
10.1016/j.rechem.2020.100077
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发表时间:
2020
影响因子:
2.3
通讯作者:
Susumu Yonezawa
中科院分区:
文献类型:
--
作者:
Takashi Okada;Fumihiro Nishimura;Susumu Yonezawa
The reactivity of metallic palladium in a K2CO3-K2O-B2O3melt 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-Al2O3system. 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 AlO4and AlO6structures and boron oxyanions as diborate groups also were detected in the precipitate.
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DOI:
10.1016/s0925-8388(03)00666-2
发表时间:
2004
期刊:
影响因子:
--
作者:
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通讯作者:
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影响因子:
5.3
作者:
Takashi Okada;Yoshiya Taniguchi;Fumihiro Nishimura;Susumu Yonezawa
通讯作者:
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发表时间:
2013
期刊:
影响因子:
--
作者:
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DOI:
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发表时间:
2004
期刊:
影响因子:
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作者:
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通讯作者:
M. Maeda
DOI:
10.1557/jmr.2003.0272
发表时间:
2003
期刊:
影响因子:
--
作者:
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通讯作者:
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