摘要
采用紫外分光光度计研究了季铵盐型黏弹性表面活性剂VES-2-16和VES-4-16在沁水盆地煤粉上的吸附规律,并计算了该类表面活性剂在煤粉上的吸附焓。结果表明:季铵盐型黏弹性表面活性剂在煤粉上的吸附曲线符合Langmuir吸附规律;不管是在较高温度还是在较低温度下都基本能达到吸附平衡,此后吸附量的增加趋于平缓;两者在煤粉上的吸附焓变是负值说明吸附是放热的,温度升高不利于吸附的进行。
The quaternary ammonium surfactant viscoelastic VES-2-16 and VES-4-16 adsorption on coal powder of Qinshui Basin were studied by UV spectrophotometer,and adsorption enthalpy of the surfactants were calculated.The results show that adsorption performance of the quaternary ammonium viscoelastic surfactant meets with Langmuir adsorption law.The surfactants are essential to achieve the adsorption equilibrium at all temperature,and then the adsorption tends to be stable.The adsorption enthalpy of surfactant on coal is negative,which illustrate that the adsorption is exothermic and high temperature is not conducive to the adsorption.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2011年第1期110-113,共4页
Journal of China Coal Society
