考察了11种结构明确的奇数碳烷基间二甲苯磺酸钠(mCn-hS)在大庆油砂上的吸附,探讨了mCn-hS的初始质量浓度、分子结构、分子中烷基链长度及助剂对其吸附量的影响。结果表明,随着mCn-hS初始质量浓度的增大,其在大庆油砂上的吸附量先增大至饱和,后略有降低;烷基链长度相同的mCn-hS,随着其中芳基位置向烷基链中间位置移动,其在大庆油砂上的吸附量降低;NaCl和NaOH的加入使mCn-hS在大庆油砂上的吸附量增大,而异戊醇的加入使其降低;加入助剂后,随着mCn-hS分子中烷基链长度的增加,mCn-hS在大庆油砂上的吸附量减小。
The adsorption properties of eleven isomers of sodium alkyl m-xylene-aryl sulfonates with odd-numbered alkyls(mCn-hS) on Daqing oil sands were measured,and the effects of initial mass concentration,molecular structures,the length of carbonic chain of mCn-hS and accessory chemicals on the adsorption capacity of mCn-hS in Daqing oil sands were discussed.The experimental data showed that with the increase of mCn-hS initial mass concentration the adsorption amount first increased and slightly decreased after reaching its saturation value.With the aromatic ring in mCn-hS molecule shifting from the terminal to the center of the long carbonic chain,the adsorption capacity of mCn-hS in Daqing oil sands decreased.With the increase of NaCl and NaOH mass concentrations,the adsorption capacity of mCn-hS in Daqing oil sands increased,while decreased with the addition of isoamyl alcohol.Under the addion of accessory chemicals,the adsorption capacity of mCn-hS in Daqing oil sands decreased with the increase of the carbonic chain length in mCn-hS molecule.