Exact statistical thermodynamics of alkane binary mixtures in zeolites: New interpretation of the adsorption preference reversal phenomenon from multisite-occupancy theory
The rigorous statistical thermodynamics of mixtures of polyatomic species adsorbed on one-dimensional substrates is presented. The thermodynamic functions calculated for a monomer-dimer mixture are applied to describe the adsorption of methane-ethane mixtures in zeolites. The theoretical formalism r...
| Authors: | , , |
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| Format: | article |
| Status: | Published version |
| Publication Date: | 2009 |
| Country: | Argentina |
| Institution: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repository: | CONICET Digital (CONICET) |
| Language: | English |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/125775 |
| Online Access: | http://hdl.handle.net/11336/125775 |
| Access Level: | Open access |
| Keyword: | ALKANE ADSORPTION MIXTURE REVERSAL https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
| Summary: | The rigorous statistical thermodynamics of mixtures of polyatomic species adsorbed on one-dimensional substrates is presented. The thermodynamic functions calculated for a monomer-dimer mixture are applied to describe the adsorption of methane-ethane mixtures in zeolites. The theoretical formalism reproduces the main features of the system, showing that the displacement of ethane by methane at higher pressures, a phenomenon known as Adsorption Preference Reversal, is the result of the difference of size (or number of occupied sites) between the adsorbed species. |
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