Relationship of Structure to Properties of Some Anionic Surfactants as Collectors in the Flotation Process. 1. Effect of Chain Length
作者:N. A. Abdel-Khalek、A. M. A. Omar、Y. Barakat
DOI:10.1021/je9801359
日期:1999.1.1
thermodynamic properties of some synthetic surfactants, as well as their efficiency as collectors in the flotation of petroleum coke, are studied. These surfactants are monoisomeric alkylbenzenesulfonate of different alkyl chains (C12 to C14). The results show that the length of the hydrocarbon chain of these surfactants plays a major role in determining their surface and thermodynamic properties. The values
研究了一些合成表面活性剂的表面和热力学性质,以及它们在石油焦浮选中作为捕收剂的效率。这些表面活性剂是不同烷基链(C12至C14)的单异构烷基苯磺酸盐。结果表明,这些表面活性剂的烃链长度在确定其表面和热力学性质中起主要作用。表面过量浓度(Γ的值最大)和胶束化的自由能(Δ ģ °麦克风)被发现随着链中碳原子数目的增加而增加,而临界胶束浓度(cmc)的值则降低。结果还表明,表面活性剂的吸附效果与其作为捕收剂的效率之间存在良好的关系。Γ更高的表面活性剂最大产生的低灰分含量和更高的浮选率的浓缩物。因此,具有较长烷基链(C14)和最高Γ表面活性剂最大值是更有选择性,作为集电体,比其他人更短碳链的。