Separation of Branched Hexane Isomers on Zeolite BETA
An experimental study of the single, binary, ternary and quaternary fixed bed adsorption of hexane isomers onto zeolite BETA was performed covering the temperature range between 423 K and 523 K and partial pressures up to 0.3 bar. Adsorption equilibrium isotherms were collected from breakthrough exp...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SAGE Publishing
2007-04-01
|
| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1260/026361707782398173 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1841561841411555328 |
|---|---|
| author | Patrick S. Bárcia José A.C. Silva Alírio E. Rodrigues |
| author_facet | Patrick S. Bárcia José A.C. Silva Alírio E. Rodrigues |
| author_sort | Patrick S. Bárcia |
| collection | DOAJ |
| description | An experimental study of the single, binary, ternary and quaternary fixed bed adsorption of hexane isomers onto zeolite BETA was performed covering the temperature range between 423 K and 523 K and partial pressures up to 0.3 bar. Adsorption equilibrium isotherms were collected from breakthrough experiments. Based on an analysis of sorption events at the molecular level, a Tri-Site Langmuir model (TSL) was developed to interpret the equilibrium data with good accuracy. At the partial pressures studied, it was found that the degree of branching was related to the affinity; the sorption hierarchy was most favourable towards the linear isomer and least favourable towards the di-branched ones. A mathematical model based on a linear driving force (LDF) was developed and used to test the experimental data. It was found that the model predicted the behaviour of the fixed bed experiments with good accuracy. Zeolite BETA demonstrated significant selectivity between branched C 6 isomers (especially at low coverage), thereby suggesting a means of solving this difficult separation problem. |
| format | Article |
| id | doaj-art-25b28af62a4c4aada5f6e4f8a7816318 |
| institution | Kabale University |
| issn | 0263-6174 2048-4038 |
| language | English |
| publishDate | 2007-04-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj-art-25b28af62a4c4aada5f6e4f8a78163182025-01-03T01:23:07ZengSAGE PublishingAdsorption Science & Technology0263-61742048-40382007-04-012510.1260/026361707782398173Separation of Branched Hexane Isomers on Zeolite BETAPatrick S. Bárcia0José A.C. Silva1Alírio E. Rodrigues2 Escola Superior de Tecnologia e Gestão, Instituto Politécnico de Bragança, Campus Santa Apolónia - Apartado 1134, 5301-857 Bragança, Portugal Escola Superior de Tecnologia e Gestão, Instituto Politécnico de Bragança, Campus Santa Apolónia - Apartado 1134, 5301-857 Bragança, Portugal Laboratory of Separation and Reaction Engineering, Faculdade de Engenharia, Universidade do Porto, Rua do Dr. Roberto Frias, S/N, Porto, PortugalAn experimental study of the single, binary, ternary and quaternary fixed bed adsorption of hexane isomers onto zeolite BETA was performed covering the temperature range between 423 K and 523 K and partial pressures up to 0.3 bar. Adsorption equilibrium isotherms were collected from breakthrough experiments. Based on an analysis of sorption events at the molecular level, a Tri-Site Langmuir model (TSL) was developed to interpret the equilibrium data with good accuracy. At the partial pressures studied, it was found that the degree of branching was related to the affinity; the sorption hierarchy was most favourable towards the linear isomer and least favourable towards the di-branched ones. A mathematical model based on a linear driving force (LDF) was developed and used to test the experimental data. It was found that the model predicted the behaviour of the fixed bed experiments with good accuracy. Zeolite BETA demonstrated significant selectivity between branched C 6 isomers (especially at low coverage), thereby suggesting a means of solving this difficult separation problem.https://doi.org/10.1260/026361707782398173 |
| spellingShingle | Patrick S. Bárcia José A.C. Silva Alírio E. Rodrigues Separation of Branched Hexane Isomers on Zeolite BETA Adsorption Science & Technology |
| title | Separation of Branched Hexane Isomers on Zeolite BETA |
| title_full | Separation of Branched Hexane Isomers on Zeolite BETA |
| title_fullStr | Separation of Branched Hexane Isomers on Zeolite BETA |
| title_full_unstemmed | Separation of Branched Hexane Isomers on Zeolite BETA |
| title_short | Separation of Branched Hexane Isomers on Zeolite BETA |
| title_sort | separation of branched hexane isomers on zeolite beta |
| url | https://doi.org/10.1260/026361707782398173 |
| work_keys_str_mv | AT patricksbarcia separationofbranchedhexaneisomersonzeolitebeta AT joseacsilva separationofbranchedhexaneisomersonzeolitebeta AT alirioerodrigues separationofbranchedhexaneisomersonzeolitebeta |