A linear comprehensive adsorption model of hydrogen on super activated carbon under supercritical conditions.
The adsorption isotherms of hydrogen on super activated carbon were measured systematically, covering a temperature range of 93-293 K at 20 K intervals and pressures up to 7 MPa. All the experimental data were linearized by adopting the coordinates ln ln(n) vs 1/(ln P). The results indicate that the adsorption limit (P(lim), n(lim)) exists virtually at high pressure and has a certain physical meaning. Based on the adsorption limit, further analyses were carried out by modeling the adsorption isotherms in the coordinates ln(n(lim)/n) vs ln(RT(ln(P(lim)/P) and a linear comprehensive adsorption model was proposed in the form n (lim)=n.exp(psi T+lambda/T-c/) (beta).[RT ln( P (lim)P )] (b) which can predict the adsorption isotherm of hydrogen on activated carbon in supercritical conditions.
Zhan
Liang
L
State Key Laboratory of Coal Conversion, Chinese Academy of Sciences, Taiyuan, 030001, China.
Li
Kai-xi
KX
Wang
Yan-li
YL
Meng
Qing-han
QH
Lv
Chun-xiang
CX
Ling
Li-cheng
LC