中文摘要：

吸附热和方铅矿的表面上的钾重铬酸盐的反应率常数被学习。结果显示那钾重铬酸盐在方铅矿表面上趋于到吸附。反应顺序仅仅是 0.08385，建议钾重铬酸盐的集中几乎没有对它方铅矿表面上的吸附的小影响。另外， CrO 的模拟<潜水艇class=“ a-plus-plus ”> 4 <啜class=“ a-plus-plus ”>在 O 的缺席和存在的 PbS ( 100 )表面上的 2 吸附<潜水艇class=“ a-plus-plus ”> 2 被密度执行功能的理论( DFT )。计算结果显示出那 CrO < 潜水艇 class= “ a-plus-plus ” > 4 < 啜 class= “ a-plus-plus ” > 2 种类在 O 的 Pb-S 契约地点，和存在精力充沛地吸附 < 潜水艇 class= “ a-plus-plus ” > 2 能提高这吸附。

英文摘要：

The adsorption heat and reaction rate constant of potassium dichromate on the surface of galena were studied. The results indicate that potassium dichromate tends to adsorption on the galena surface. The reaction order is only 0.08385, suggesting that the concentration of potassium dichromate has little influence on its adsorption on the galena surface. In addition, the simulation of CrO2 4- adsorption on the PbS （100） surface in the absence and presence of O2 was carried out by density functional theory （DFT）. The calculated results show that CrO2 4- species adsorb energetically at the Pb-S bond site, and the presence of O2 can enhance this adsorption.