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硫化钠体系中异极矿表面的硫化特性及硫化产物解析
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作者 张嘎 王美丽 +2 位作者 和永新 王涵 丰奇成 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2024年第2期629-642,共14页
通过多种分析检测方法揭示硫化钠体系中异极矿表面的硫化特性和机理,并对异极矿表面硫化产物进行分析测试。研究结果表明,硫化钠浓度对异极矿表面的硫化效果具有显著影响,即提高硫化钠浓度能促进矿浆溶液中硫组分与矿物表面反应,从而提... 通过多种分析检测方法揭示硫化钠体系中异极矿表面的硫化特性和机理,并对异极矿表面硫化产物进行分析测试。研究结果表明,硫化钠浓度对异极矿表面的硫化效果具有显著影响,即提高硫化钠浓度能促进矿浆溶液中硫组分与矿物表面反应,从而提高异极矿表面硫化产物的含量及矿物表面的疏水性。XPS和ToF-SIMS分析表明,异极矿表面的硫化产物并非单一的硫化物,而是由硫化物(S^(2−))和多硫化物(S_(n)^(2−))组成,且矿物表面多硫化物含量随硫化钠浓度的增加而增加,从而增强异极矿表面硫化产物的活性。 展开更多
关键词 硫化特性 异极矿 硫化钠浓度 硫化锌组分 多硫化物
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Estimation of Saturated Vapor Pressure from Nucleation Data
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作者 mei-li wang Ji-ming Yang Xi-sheng Luo 《Chinese Journal of Chemical Physics》 SCIE CAS CSCD 北大核心 2006年第5期416-422,共7页
Saturated vapor pressure was calculated from the nucleation experimental data using the thermodynamically consistent nucleation theory in which the effect of real gas is considered. The cubic polynomial fit equations ... Saturated vapor pressure was calculated from the nucleation experimental data using the thermodynamically consistent nucleation theory in which the effect of real gas is considered. The cubic polynomial fit equations of saturation pressure for several substances were obtained based on the calculation. The results of the calculations were compared to those of thermodynamic equilibrium equation and the empirical equation and applied to the predictions of the classical nucleation theory. The results show that the saturation pressures estimated from the nucleation data agree fairly well with those of empirical equations for the substances investigated, and this indicates that the predictions from the classical nucleation theory are close to the experimental data. 展开更多
关键词 Nucleation data Saturated vapor Surface tension
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