Ethane/Ethylene Adsorption on Carbon Nanotubes: Temperature and Size Effects on Separation Capacity

We present the results of Monte Carlo simulations of the adsorption of single-component ethane and ethylene and of equimolar mixtures of these two gases on bundles of closed, single-walled carbon nanotubes. Two types of nanotube bundles were used in the simulations: homogeneous (i.e., those in which...

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Autores principales: Albesa, Alberto Gustavo, Rafti, Matías, Rawat, Dinesh S., Vicente, José Luis, Migone, Aldo D.
Formato: Articulo
Lenguaje:Inglés
Publicado: 2012
Materias:
Química
Física
Adsorption
Carbon nanotubes
Hydrocarbons
Nanotubes
Selectivity
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/151262
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-151262
record_format dspace
spelling I19-R120-10915-1512622023-04-11T20:08:30Z http://sedici.unlp.edu.ar/handle/10915/151262 issn:0743-7463 issn:1520-5827 Ethane/Ethylene Adsorption on Carbon Nanotubes: Temperature and Size Effects on Separation Capacity Albesa, Alberto Gustavo Rafti, Matías Rawat, Dinesh S. Vicente, José Luis Migone, Aldo D. 2012-01 2023-04-10T18:47:24Z en Química Física Adsorption Carbon nanotubes Hydrocarbons Nanotubes Selectivity We present the results of Monte Carlo simulations of the adsorption of single-component ethane and ethylene and of equimolar mixtures of these two gases on bundles of closed, single-walled carbon nanotubes. Two types of nanotube bundles were used in the simulations: homogeneous (i.e., those in which all the nanotubes have identical diameters) and heterogeneous (those in which nanotubes of different diameters are allowed). We found that at the same pressure and temperature more ethane than ethylene adsorbs on the bundles over the entire range of pressures and temperatures explored. The simulation results for the equimolar mixtures show that the pressure at which maximum separation is attained is a very sensitive function of the diameter of the nanotubes present in the bundles. Simulations using heterogeneous bundles yield better agreement with single-component experimental data for isotherms and isosteric heats than those obtained from simulations using homogeneous bundles. Possible applications of nanotubes in gas separation are discussed. We explored the effect of the diameter of the nanotubes on the separation ability of these sorbents, both for the internal and for the external sites. We found that substrate selectivity is a decreasing function of temperature. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas Articulo Articulo http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) application/pdf 1824-1832
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Química
Física
Adsorption
Carbon nanotubes
Hydrocarbons
Nanotubes
Selectivity
spellingShingle Química
Física
Adsorption
Carbon nanotubes
Hydrocarbons
Nanotubes
Selectivity
Albesa, Alberto Gustavo
Rafti, Matías
Rawat, Dinesh S.
Vicente, José Luis
Migone, Aldo D.
Ethane/Ethylene Adsorption on Carbon Nanotubes: Temperature and Size Effects on Separation Capacity
topic_facet Química
Física
Adsorption
Carbon nanotubes
Hydrocarbons
Nanotubes
Selectivity
description We present the results of Monte Carlo simulations of the adsorption of single-component ethane and ethylene and of equimolar mixtures of these two gases on bundles of closed, single-walled carbon nanotubes. Two types of nanotube bundles were used in the simulations: homogeneous (i.e., those in which all the nanotubes have identical diameters) and heterogeneous (those in which nanotubes of different diameters are allowed). We found that at the same pressure and temperature more ethane than ethylene adsorbs on the bundles over the entire range of pressures and temperatures explored. The simulation results for the equimolar mixtures show that the pressure at which maximum separation is attained is a very sensitive function of the diameter of the nanotubes present in the bundles. Simulations using heterogeneous bundles yield better agreement with single-component experimental data for isotherms and isosteric heats than those obtained from simulations using homogeneous bundles. Possible applications of nanotubes in gas separation are discussed. We explored the effect of the diameter of the nanotubes on the separation ability of these sorbents, both for the internal and for the external sites. We found that substrate selectivity is a decreasing function of temperature.
format Articulo
Articulo
author Albesa, Alberto Gustavo
Rafti, Matías
Rawat, Dinesh S.
Vicente, José Luis
Migone, Aldo D.
author_facet Albesa, Alberto Gustavo
Rafti, Matías
Rawat, Dinesh S.
Vicente, José Luis
Migone, Aldo D.
author_sort Albesa, Alberto Gustavo
title Ethane/Ethylene Adsorption on Carbon Nanotubes: Temperature and Size Effects on Separation Capacity
title_short Ethane/Ethylene Adsorption on Carbon Nanotubes: Temperature and Size Effects on Separation Capacity
title_full Ethane/Ethylene Adsorption on Carbon Nanotubes: Temperature and Size Effects on Separation Capacity
title_fullStr Ethane/Ethylene Adsorption on Carbon Nanotubes: Temperature and Size Effects on Separation Capacity
title_full_unstemmed Ethane/Ethylene Adsorption on Carbon Nanotubes: Temperature and Size Effects on Separation Capacity
title_sort ethane/ethylene adsorption on carbon nanotubes: temperature and size effects on separation capacity
publishDate 2012
url http://sedici.unlp.edu.ar/handle/10915/151262
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AT raftimatias ethaneethyleneadsorptiononcarbonnanotubestemperatureandsizeeffectsonseparationcapacity
AT rawatdineshs ethaneethyleneadsorptiononcarbonnanotubestemperatureandsizeeffectsonseparationcapacity
AT vicentejoseluis ethaneethyleneadsorptiononcarbonnanotubestemperatureandsizeeffectsonseparationcapacity
AT migonealdod ethaneethyleneadsorptiononcarbonnanotubestemperatureandsizeeffectsonseparationcapacity
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