OPTIMISATION OF ADSORPTIVE STORAGE: THERMODYNAMIC ANALYSIS AND SIMULATION
The storage of gases in porous adsorbents is examined here thermodynamically from a Grail adsorbent, for which the adsorptive delivery is maximized. It is shown that for ambient temperature storage of hydrogen and delivery between 30 bar and 1.5 bar pressure, for the optimum adsorbent the adsorption enthalpy change is 15.1 kJ/mole, while for methane it is 18.8 kJ/mole. For carbons, an optimum operating temperature of about 115 K is predicted for hydrogen storage, while for methane the optimum temperature for carbons is 254 K. It is also demonstrated that for maximum delivery of the gas the optimum adsorbent must be homogeneous. These results are confirmed with the help of experimental data from the literature, as well as extensive Monte Carlo simulations conducted here using slit pore models of activated carbons and atomistic models of carbon nanotubes.
S.K.BHATIA ALAN L.MYERS
Division of Chemical Engineering The University of Queensland, Brisbane, QLD 4072, Australia Department of Chemical and Biomolecular Engineering University of Pennsylvania, Philadelphia, PA 191
国际会议
天津
英文
228-236
2006-05-22（万方平台首次上网日期，不代表论文的发表时间）