The interaction potential of hydrogen MWCNTs and the isosteric heat of hydrogen adsorption in low limit surface concentration were calculated by using gas surface virial coefficients and Henry law. 引入维里吸附方程,并由第二维里吸附系数和亨利定律确定了吸附氢分子在多壁碳纳米管上受到的壁面吸附势和极限吸附热。
Prediction of adsorption isotherms with isosteric heat of adsorption 吸附热预测吸附等温线
The isosteric heat of adsorption for both of CO and CO_2 decreased with surface loading increasing. CO和CO2在活性炭A上的等量吸附热均随吸附量的增加而降低。
The results show that the isosteric heat is in characteristic of the weak temperature dependence and the adsorption on an energy heterogeneous surface, the mean isosteric heat is about 3-4 kJ/ mol. 结果表明,氢在MWCNTs上等量吸附热随温度变化且表现出在弱的能量不均匀表面吸附的特点,平均值约为3&4kJ/mol;
Determination of isosteric heat of adsorption of hydrogen on carbon-based adsorbents with nonlocal density functional theory approach 碳基吸附剂储氢吸附热的密度泛函理论
The isosteric heat slightly decreased with the increase of the adsorption amounts. The energy distribution is nearly uniform for the surface of carbon membrane. 等量吸附热随着吸附量的增大而略微下降,炭膜表面能量分布比较均一。
The adsorption is an endothermic process, and the isosteric heat of adsorption increases with increasing amount adsorbed. 2. 等量吸附热为负值说明吸附为放热过程,等量吸附热随吸附量的增大而增大。