Thermodynamic analysis of adsorption process at a non-equilibrium steady state
Thermodynamic analysis of adsorption process at a non-equilibrium steady state
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非平衡稳态吸附过程的热力学分析
DOI：
10.1007/s11434-010-3172-x
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发表时间：
2010-11
期刊：
影响因子：
--
通讯作者：
Min JingChun
中科院分区：
文献类型：
--
作者：
Wang LiNing;Min JingChun
利用非平衡热力学方法，证实了体气和吸附气体温差的非平衡吸附存在稳态的可能性，并确定了稳态。得到了体气和吸附气体的化学势差，并导出了计算吸附熵和等量吸附热的方程。计算了非平衡稳态下的吸附熵和等量吸附热相对于平衡态的变化，并与传统的平衡热力学方法进行了比较。结果表明，用非平衡热力学方法得到的吸附熵和等量吸附热的变化不仅与温度有关，而且与吸附状态有关，而用平衡热力学方法得到的结果只是温度的函数。这主要是因为本文将吸附和气体温度变化作为一个整体来处理，并考虑了它们之间的相互作用，而平衡热力学方法将吸附和气体温度变化分离为两个独立的过程，而忽略了它们之间的相互作用。
By using the non-equilibrium thermodynamic approach, the possibility of the existence of a steady state for non-equilibrium adsorption with a temperature difference between body gas and adsorbed gas was confirmed and the steady state was determined. The chemical potential difference between body gas and adsorbed gas was obtained and equations for evaluating the adsorption entropy and the isosteric heat of adsorption were derived. The changes of the adsorption entropy and the isosteric heat of adsorption at the non-equilibrium steady state relative to those at the equilibrium state were calculated and the results were compared with those obtained using the traditional equilibrium thermodynamic method. The comparison suggests that the changes of the adsorption entropy and the isosteric heat of adsorption obtained using the non-equilibrium thermodynamic approach are related with not only temperature but also adsorptive state, while those obtained using the equilibrium thermodynamic method are only a function of temperature. The main reason is that the present study treats the adsorption and gas temperature change as an integrated process and considers their interaction, whereas the equilibrium thermodynamic approach separates the adsorption and gas temperature change as two independent processes and neglects their interaction.
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影响因子：
7.2
作者：
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通讯作者：
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影响因子：
3.7
作者：
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通讯作者：
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影响因子：
4.2
作者：
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通讯作者：
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DOI：
10.1016/j.chroma.2006.05.067
发表时间：
2006-09
期刊：
Journal of chromatography. A
影响因子：
--
作者：
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通讯作者：
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影响因子：
6.4
作者：
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通讯作者：
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