Theoretical Insight of Physical Adsorption for a Single Component Adsorbent+Adsorbate System
Theoretical Insight of Physical Adsorption for a Single Component Adsorbent+Adsorbate System
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DOI：
10.1115/imece2007-42943
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
A. Chakraborty;B. Saha;S. Koyama;Ibrahim I. El-Sharkawy;K. Ng
中科院分区：
文献类型：
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作者：
A. Chakraborty;B. Saha;S. Koyama;Ibrahim I. El-Sharkawy;K. Ng
本文从经典热力学的观点出发，导出并发展了单组分吸附剂+吸附质体系的热力学性质曲面。这些热力学框架使我们能够计算比热容，部分焓和熵的吸附过程的分析彻底。一个理论框架，用于估计吸附质（蒸汽）和吸附剂（固体）之间的吸附热的化学平衡，麦克斯韦关系和吸附相的熵的热力学要求也来自。传统上，吸附物的比热容被假定为对应于其液相比热容，最近被假定为对应于其气相比热容。我们在这里已经表明，导出的比热容填补了关于吸附相状态的信息空白，以消除关于吸附相的实际状态的混淆。© 2007 ASME
The thermodynamic property surfaces for a single-component adsorbent + adsorbate system have been derived and developed from the view point of classical thermodynamics. These thermodynamic frameworks enable us to compute the specific heat capacity, partial enthalpy and entropy for the analyses of adsorption processes thoroughly. A theoretical framework for the estimation of the isosteric heat of adsorption between an adsorbate (vapor) and an adsorbent (solid) is also derived for the thermodynamic requirements of chemical equilibrium, Maxwell relations and the entropy of the adsorbed phase. Conventionally, the specific heat capacity of the adsorbate is assumed to correspond to its liquid phase specific heat capacity and more recently to that of its gas phase. We have shown here that the derived specific heat capacity fills up the information gap with respect to the state of adsorbed phase to dispel the confusion as to what is the actual state of the adsorbed phase.© 2007 ASME