液氢容器真空夹层氢吸附剂研究进展

刘磊,潘权稳,王博,赵钦宇,江龙,何远新,周伟明,甘智华

Progress of hydrogen adsorbents in vacuum jacket of liquid hydrogen vessels

Lei LIU,Quan-wen PAN,Bo WANG,Qin-yu ZHAO,Long JIANG,Yuan-xin HE,Wei-ming ZHOU,Zhi-hua GAN

表 3 常见吸附等温式类型[59]

Tab.3 Different of common adsorption isotherms[59]

等温式类型 方程形式 模型特点 Langmuir $ \theta = \dfrac{{{k_1}p}}{{1+{k_1}p}} $ 单分子层吸附， 吸附热不变 Henry $\theta = { {{k} }_1}p$ 低压吸附， $ {k_1}\ll 1 $ BET $\theta = \dfrac{{cp}}{{({p_0} - p)[1+(c - 1){p /{{p_0}}}]}}$ 多分子层吸附， 各层吸附热为常数 Freundlich $\theta = {K_1}{p^{{1 / n}}}$ 吸附位数目随吸附 热指数性减少 Temkin $\displaystyle \theta = \dfrac{{RT}}{{\beta {q_0}}}\ln ({K_2}p)$ 吸附热随表面覆盖 度线性减少 DubDubinin-Radushkevch $\ln \theta = - B{(RT\ln ({{{p_0}} \mathord{\left/ {\vphantom {{{p_0}} p}} \right. } p}))^2}$ 低温下稀薄气体的吸附