甲烷在活性炭上吸脱附行为的研究

Study of performances of methane adsorption and desorption on activated carbon

用标准容积法测得中压（０～５．０ＭＰａ）下不同活性炭对甲烷的吸脱附等温线，得到了吸附容量和有效吸附容量。结果表明，活性炭对甲烷的吸脱附存在着滞后现象。研究了温度对吸附等温线的影响。通过对吸附法和压缩法甲烷储存密度的比较，得出了吸附法定容储存甲烷的最佳压力范围是３．０～４．０ＭＰａ。利用Ｃｌａｕｓｉｕｓ－Ｃｌａｐｅｙｒｏｎ方程解析了甲烷在活性炭上等量吸附热。结果表明，随着吸附量的增加。

The performances of methane adsorption on different activated carbons (CA) were investigated in a high pressure range(0～5 0MPa).The adsorption and desorption isotherms of methane were measured by the standard volumetric method and a hysterisis phenomenon was observed. The optimal storage pressure range was found at 3 0～4 0MPa. Isosteric heat of adsorption of methane on CA supercarbon was analytically determined by Clausius Clapeyron equation,suggesting that the heat decreased with the increase of adsorption capacity.