摘要
研究了液氮温度下活性炭(AC)、碳分子筛(601)和碳纳米纤维(CNF)对H2、D2的吸附等温线,采用2种Langmuir模型对它们吸附H2、D2的等温线进行了理论计算。研究结果表明:在液氮温度下,3种碳基吸附剂对氢同位素的吸附等温线遵从Langmuir单分子层吸附模型,符合按活性点分类的定点吸附机制;吸附等温线可用Langmuir多项式理论模型进行准确计算。
Adsorption isotherms of H2 and D2 on activated carbon(AC), carbon molecular sieve(601) and carbon nanofibers(CNF) are investigated at the liquid nitrogen temperature. Both the onesite and twosite Langmuir models are used for isotherm calculation. Results indicate that all isotherms of H2 and D2 on AC, 601 and CNF can be expressed well with the twosite Langmuir model. Accordingly, it can be inferred that, while adsorbed on carbonaceous adsorbents at the liquid nitrogen temperature, hydrogen isotope molecules should occupy the multiple types of active sites to form a localized monolayer.
出处
《原子能科学技术》
EI
CAS
CSCD
2003年第2期142-144,共3页
Atomic Energy Science and Technology