Measurement of effective diffusivities of toluene in activated carbon in the presence of supercritical carbon dioxide
Measurement of effective diffusivities of toluene in activated carbon in the presence of supercritical carbon dioxide
复制标题
超临界二氧化碳存在下甲苯在活性炭中有效扩散率的测量
DOI：
10.1021/ie00020a027
复制
发表时间：
1993
影响因子：
4.2
通讯作者：
C. Tan
中科院分区：
文献类型：
--
作者：
Ching;C. Tan
通过纺丝篮反应器中甲苯在温度为308、318和328 K、压力为163 bar条件下的吸附曲线，测定了超临界二氧化碳中甲苯的有效扩散系数。观察到超临界条件下的有效扩散系数与二氧化碳浓度密切相关，而与温度和吸附的甲苯量关系不大。通过吸附速率实验，得到了活性炭吸附甲苯的平衡量，并用Toth等温线表达式进行了关联
The effective diffusivities of toluene in supercritical carbon dioxide in activated carbon pellets were measured from the sorption curves of toluene in a spinning basket reactor at temperatures 308, 318, and 328 K and pressures up to 163 bar. It was observed that the effective diffusivities at supercritical conditions were strongly dependent on carbon dioxide density but weary dependent on temperature and the amount of toluene adsorbed. The equilibrium amount of toluene adsorbed on activated carbon was also obtained from the sorption rate experiment which could be correlated by the Toth isotherm expression