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To explore the reduction process of antimony oxide (Sb2O3) in high-temperature molten lithium chloride, Sb2O3 was reduced to metallic antimony by electrolytic reduction and lithothermal reduction process respectively. The phase structure of products was analyzed by XRD, and electrochemical signals of Sb2O3 powder were accurately measured using molybdenum cavity electrode. Based on thermodynamic analysis and E-pO2- diagrams, it is confirmed that Sb2O3 can be effectively reduced by electrolysis, yielding metallic Sb at potentials below 1.65 V (vs. Li/Li+). With a potential of 0.94 V (vs. Li/Li+) and electrolysis duration of 6 h, the antimony reduction rate can reach 82.0%. The conditions for lithium thermal reduction are as follows:metallic lithium is added at the theoretical dosage, reaction temperature of 923 K, and reaction time of 6 h. And the antimony reduction rate can reach 77.0% under these conditions.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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