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一、红外光谱已应用于研究黄原酸盐和双黄原酸在氧化铜和硫化铜表面的固/液界面的吸附作用。作用物经过纯的碱金属黄原酸盐(不含双黄原酸)的水溶液处理后的光谱表明,在所有情况下黄原酸亚铜是化学吸附。在吸附作用物上,双黄原酸解离,形成一层黄原酸亚铜,然后与剩余的未解离的双黄原酸呈物理的共吸附。这种双黄原酸的共吸附,给予表面更大的疏水性,由于接触角的增加证实了这一点,接触角从60°(纯的乙基黄原酸钾)增加到80°。吸附的谱带强度假定在表面形成了多层黄原酸亚铜(和双黄原酸,假如有过剩存在的话)。二、已用红外光谱研究了硫化铅在铅箔的表面形成的氧化产物与被这些作用物所引起的黄原酸盐与双黄原酸的吸附。如以往Hgihara用电子衍射作用研究的报告提出,暴露于空气中或水中以后之最低氧化产物主要是硫代硫酸铅(PbS_2O_3)而不是硫酸铅。在低强度离子轰击之下,发现硫代硫酸铅产物的表面进行分解,显示出碱性硫酸铅(PbO·PbSO_4)的红处光谱。在电子衍射仪中,被高能量电子和离子轰击,同样硫代硫酸铅转变成硫酸铅。由于从水溶液中黄原酸盐的吸附结果形成多层硫代硫酸铅(PbS_2O_8)的表面,几乎全部为多层黄原酸铅所置换,后者将共同吸附双黄原酸,给予表面更高的疏水性,接触角从60°增加到80°。当双黄原酸单独的时候,是与挥发硫化铅薄膜表面上的氧化物起反应,红外光谱中显出有一些黄原酸铅出现与残余硫代硫酸盐的吸附稍微减少的现象。无论如何,在天然的方铅矿和金属铅的磨光的表面上的氧化产物与双黄原酸之间没有发现反应,这种行为与第一部分所指出的铜与铜硫化物质的趋向双黄原酸的解离效应是相对的。
First, the infrared spectroscopy has been used to study the adsorption of xanthates and xanthogenates at the solid / liquid interface of copper oxide and copper sulfide surfaces. Spectra after treatment of the substrate with an aqueous solution of pure alkali xanthate (without xanthogen acid) show that cuprous xanthate is chemisorbed in all cases. On the adsorbate, the xanthogenates dissociate to form a layer of cuprous xanthate, which is then physically co-adsorbed with the remaining un-dissociated xanthogenate. The co-adsorption of this xanthogenate gave greater hydrophobicity to the surface, as evidenced by the increase in contact angle, which increased from 60 ° (pure ethylxanthogenate) to 80 °. Adsorbed band intensities Assume that multiple layers of cuprous xanthate (and xanthogenate, if present in excess) are formed on the surface. Second, the oxidation products of lead sulfide formed on the surface of lead foil and the adsorption of xanthogenate and xanthogenate caused by these additives have been studied by infrared spectroscopy. As reported in previous studies by Hgihara for electron diffraction studies, the lowest oxidation products after exposure to the air or to water were mainly lead thiosulfate (PbS_2O_3) rather than lead sulfate. Under low-intensity ion bombardment, the surface of the lead thiosulfate product was found to decompose, revealing the red-color spectrum of basic lead sulfate (PbO · PbSO 4). In electron diffraction, it is bombarded with high-energy electrons and ions and the same lead thiosulfate is converted to lead sulfate. Since the surface of the multi-layer lead thiosulfate (PbS_2O_8) is formed as a result of adsorption of the xanthate in an aqueous solution, almost all of the surface is replaced with a plurality of layers of lead xanthate which will co-adsorb the xanthogenate giving a higher surface Hydrophobicity, the contact angle increased from 60 ° to 80 °. When xanthogenate alone is reacted with oxides on the surface of volatile lead sulfide films, some evidence of the presence of lead xanthate in the infrared spectrum shows a slight decrease in residual thiosulfate adsorption. In any event, no reaction between the oxidation products on the polished surfaces of natural galena and metallic lead with the dioxanthic acid was found, which is in line with the tendency of copper and copper sulphides to be identified by the first part to be double yellow The dissociation effect of ortho-acids is relative.