Comparative Study of Textural Characteristics on Methane Adsorption for Carbon Spheres Produced by CO2 Activation
Resorcinol-formaldehyde resin polymer was used as raw material for preparation of carbon spheres. Samples were treated with CO2 flow at 850°C by varying activation times. The CO2 activation granted better pore development of pore structure. The experimental data of CH4 adsorption as a function of eq...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2014-01-01
|
| Series: | International Journal of Chemical Engineering |
| Online Access: | http://dx.doi.org/10.1155/2014/916913 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832560847508996096 |
|---|---|
| author | Wen Yang Yanyan Feng Wei Chu |
| author_facet | Wen Yang Yanyan Feng Wei Chu |
| author_sort | Wen Yang |
| collection | DOAJ |
| description | Resorcinol-formaldehyde resin polymer was used as raw material for preparation of carbon spheres. Samples were treated with CO2 flow at 850°C by varying activation times. The CO2 activation granted better pore development of pore structure. The experimental data of CH4 adsorption as a function of equilibrium pressure was fitted by Langmuir and Dubinin-Astakhov (D-A) models. It was concluded that the high surface area and micropore volume of carbon spheres did unequivocally determine methane capacities. In addition, a thermodynamic study of the heat of adsorption of CH4 on the carbon spheres was carried out. Adsorption of CH4 on carbon spheres showed a decrease in the adsorption heat with CH4 occupancy, and the heat of adsorption fell from 20.51 to 12.50 kJ/mol at 298 K and then increased to a little higher values at a very high loading (>0.70), indicating that CH4/CH4 interactions within the adsorption layer became significant. |
| format | Article |
| id | doaj-art-fa7cd1f656354beeb4540cef48e7f1c5 |
| institution | Kabale University |
| issn | 1687-806X 1687-8078 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Chemical Engineering |
| spelling | doaj-art-fa7cd1f656354beeb4540cef48e7f1c52025-02-03T01:26:41ZengWileyInternational Journal of Chemical Engineering1687-806X1687-80782014-01-01201410.1155/2014/916913916913Comparative Study of Textural Characteristics on Methane Adsorption for Carbon Spheres Produced by CO2 ActivationWen Yang0Yanyan Feng1Wei Chu2Department of Chemical Engineering, Sichuan University, Chengdu 610065, ChinaDepartment of Chemical Engineering, Sichuan University, Chengdu 610065, ChinaDepartment of Chemical Engineering, Sichuan University, Chengdu 610065, ChinaResorcinol-formaldehyde resin polymer was used as raw material for preparation of carbon spheres. Samples were treated with CO2 flow at 850°C by varying activation times. The CO2 activation granted better pore development of pore structure. The experimental data of CH4 adsorption as a function of equilibrium pressure was fitted by Langmuir and Dubinin-Astakhov (D-A) models. It was concluded that the high surface area and micropore volume of carbon spheres did unequivocally determine methane capacities. In addition, a thermodynamic study of the heat of adsorption of CH4 on the carbon spheres was carried out. Adsorption of CH4 on carbon spheres showed a decrease in the adsorption heat with CH4 occupancy, and the heat of adsorption fell from 20.51 to 12.50 kJ/mol at 298 K and then increased to a little higher values at a very high loading (>0.70), indicating that CH4/CH4 interactions within the adsorption layer became significant.http://dx.doi.org/10.1155/2014/916913 |
| spellingShingle | Wen Yang Yanyan Feng Wei Chu Comparative Study of Textural Characteristics on Methane Adsorption for Carbon Spheres Produced by CO2 Activation International Journal of Chemical Engineering |
| title | Comparative Study of Textural Characteristics on Methane Adsorption for Carbon Spheres Produced by CO2 Activation |
| title_full | Comparative Study of Textural Characteristics on Methane Adsorption for Carbon Spheres Produced by CO2 Activation |
| title_fullStr | Comparative Study of Textural Characteristics on Methane Adsorption for Carbon Spheres Produced by CO2 Activation |
| title_full_unstemmed | Comparative Study of Textural Characteristics on Methane Adsorption for Carbon Spheres Produced by CO2 Activation |
| title_short | Comparative Study of Textural Characteristics on Methane Adsorption for Carbon Spheres Produced by CO2 Activation |
| title_sort | comparative study of textural characteristics on methane adsorption for carbon spheres produced by co2 activation |
| url | http://dx.doi.org/10.1155/2014/916913 |
| work_keys_str_mv | AT wenyang comparativestudyoftexturalcharacteristicsonmethaneadsorptionforcarbonspheresproducedbyco2activation AT yanyanfeng comparativestudyoftexturalcharacteristicsonmethaneadsorptionforcarbonspheresproducedbyco2activation AT weichu comparativestudyoftexturalcharacteristicsonmethaneadsorptionforcarbonspheresproducedbyco2activation |