Adsorption equilibrium of binary methane/ethane mixtures in BPL activated carbon: isotherms and calorimetric heats of adsorption.
Adsorption equilibrium of binary methane/ethane mixtures in BPL activated carbon: isotherms and calorimetric heats of adsorption.
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BPL 活性炭中二元甲烷/乙烷混合物的吸附平衡：吸附等温线和量热热。
DOI：
10.1021/la036430v
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发表时间：
2004
期刊：
影响因子：
--
通讯作者：
N. Seaton
中科院分区：
文献类型：
--
作者：
Yufeng He;J. Yun;N. Seaton
在264 ~ 373 K、3.3MPa压力范围内，用高压开流实验装置测定了纯甲烷和乙烷在BPL活性炭上的吸附。相同的装置被用来测量在BPL在301.4 K和压力高达2.6 MPa的二元甲烷/乙烷混合物的吸附。热力学一致性检验表明，数据是热力学一致的。与先前公布的两组数据相比，我们发现，在BPL中的二元甲烷/乙烷的吸附行为理想（在遵守理想吸附溶液理论的意义上，IAST）在整个压力和气相组成范围内研究。用Tian-Calvet型微量热计测定了297 K和100 kPa压力下纯甲烷和乙烷在BPL活性炭中的低压等温线、等量吸附热以及二元混合物的吸附热。混合物吸附热与IAST一致。
The adsorption of pure methane and ethane in BPL activated carbon has been measured at temperatures between 264 and 373 K and at pressures up to 3.3 MPa with a bench-scale high-pressure open-flow apparatus. The same apparatus was used to measure the adsorption of binary methane/ethane mixtures in BPL at 301.4 K and at pressures up to 2.6 MPa. Thermodynamic consistency tests demonstrate that the data are thermodynamically consistent. In contrast to two sets of data previously published, we found that the adsorption of binary methane/ethane in BPL behaves ideally (in the sense of obeying ideal adsorbed solution theory, IAST) throughout the pressure and gas-phase composition range studied. A Tian-Calvet type microcalorimeter was used to measure low-pressure isotherms, the isosteric heats of adsorption of pure methane and ethane in BPL activated carbon, and the individual heats of adsorption in binary mixtures, at 297 K and at pressures up to 100 kPa. The mixture heats of adsorption were consistent with IAST.