TEMPERATURE DEPENDENCE OF ADSORPTIVE PERFORMANCE OF HYDROGEN ON ACTIVATED CARBON
The isosteric heat of adsorption was used to evaluate the adsorptive performance of hydrogen on the activated carbon YK-1. Characterizations of the tested sample were carried out based on the N2 adsorption isotherm at 77 K. Hydrogen adsorption isotherms were volumetrically measured at equilibrium temperature-pressures from 113-310 K and 0-12.3 MPa. Isosteric heats of adsorption at four adsorption amount and that at zero surface loading were respectively determined by adsorption isosteres and the temperature dependence of the Henry’s constants. Results show that the mean and the limit of the isosteric heat of adsorption is about 4.5kJ·mol-1 and 5.373kJ· mol-1. Conclusions are drawn that the relatively smaller isosteric heat of hydrogen adsorption on the activated carbon could be ascribed to the smaller specific surface area and the microporous volume.
Q.R ZHENG A.Z.GU Z.X.CAIi H.F.LIAO C.Y.ZHENG
Energy Research & Development Center, Institute of Marine Engineering, Jimei University,Xiamen, Fuji Institute of Refrigeration & Cryogenics, Shanghai Jiao Tong University,Shanghai, 200030, PR China
国际会议
The 22nd International Congress of Refrigeration(第22届国际制冷大会)
北京
英文
2007-08-21（万方平台首次上网日期，不代表论文的发表时间）