期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 118, 期 49, 页码 28603-28608出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp508382v
关键词
-
We present the results of an adsorption isotherm study of O-2 on the metalorganic framework ZIF-8. This material undergoes a structural transition (gate-opening) as a function of increasing pressure and sorbent loading, which manifests itself in the isotherm data as a quasi-vertical substep. We used this feature to explore the temperature dependence of the structural transition; we have found that the transition occurs below the saturated vapor pressure only for temperatures below 95.39 K. The adsorption isotherm data measured at various temperatures were used also to determine the isosteric heat of adsorption of O-2 on this sorbent for different sorbent loading values. We have studied the adsorption kinetics for this system, that is, how the equilibration times for adsorption change as a function of sorbent loading. The sorbent loading dependence of the equilibration time is nonmonotonic; this characteristic appears to be related to the structural transition in the sorbent.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据