CO2 Adsorption by para-Nitroaniline Sulfuric Acid-Derived Porous Carbon Foam
The expansion product from the sulfuric acid dehydration of para-nitroaniline has been characterized and studied for CO2 adsorption. The X-ray photoelectron spectroscopy (XPS) characterization of the foam indicates that both N and S contents (15 and 9 wt%, respectively) are comparable to those separ...
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MDPI AG
2016-12-01
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| Series: | C |
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| Online Access: | http://www.mdpi.com/2311-5629/2/4/25 |
| _version_ | 1818151814571229184 |
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| author | Enrico Andreoli Andrew R. Barron |
| author_facet | Enrico Andreoli Andrew R. Barron |
| author_sort | Enrico Andreoli |
| collection | DOAJ |
| description | The expansion product from the sulfuric acid dehydration of para-nitroaniline has been characterized and studied for CO2 adsorption. The X-ray photoelectron spectroscopy (XPS) characterization of the foam indicates that both N and S contents (15 and 9 wt%, respectively) are comparable to those separately reported for nitrogen- or sulfur-containing porous carbon materials. The analysis of the XPS signals of C1s, O1s, N1s, and S2p reveals the presence of a large number of functional groups and chemical species. The CO2 adsorption capacity of the foam is 7.9 wt% (1.79 mmol/g) at 24.5 °C and 1 atm in 30 min, while the integral molar heat of adsorption is 113.6 kJ/mol, indicative of the fact that chemical reactions characteristic of amine sorbents are observed for this type of carbon foam. The kinetics of adsorption is of pseudo-first-order with an extrapolated activation energy of 18.3 kJ/mol comparable to that of amine-modified nanocarbons. The richness in functionalities of H2SO4-expanded foams represents a valuable and further pursuable approach to porous carbons alternative to KOH-derived activated carbons. |
| first_indexed | 2024-12-11T13:44:48Z |
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| id | doaj.art-1e0da395b6d249cab724a22e4615c2f7 |
| institution | Directory Open Access Journal |
| issn | 2311-5629 |
| language | English |
| last_indexed | 2024-12-11T13:44:48Z |
| publishDate | 2016-12-01 |
| publisher | MDPI AG |
| record_format | Article |
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| spelling | doaj.art-1e0da395b6d249cab724a22e4615c2f72022-12-22T01:04:34ZengMDPI AGC2311-56292016-12-01242510.3390/c2040025c2040025CO2 Adsorption by para-Nitroaniline Sulfuric Acid-Derived Porous Carbon FoamEnrico Andreoli0Andrew R. Barron1Energy Safety Research Institute, Swansea University Bay Campus, Swansea SA1 8EN, UKEnergy Safety Research Institute, Swansea University Bay Campus, Swansea SA1 8EN, UKThe expansion product from the sulfuric acid dehydration of para-nitroaniline has been characterized and studied for CO2 adsorption. The X-ray photoelectron spectroscopy (XPS) characterization of the foam indicates that both N and S contents (15 and 9 wt%, respectively) are comparable to those separately reported for nitrogen- or sulfur-containing porous carbon materials. The analysis of the XPS signals of C1s, O1s, N1s, and S2p reveals the presence of a large number of functional groups and chemical species. The CO2 adsorption capacity of the foam is 7.9 wt% (1.79 mmol/g) at 24.5 °C and 1 atm in 30 min, while the integral molar heat of adsorption is 113.6 kJ/mol, indicative of the fact that chemical reactions characteristic of amine sorbents are observed for this type of carbon foam. The kinetics of adsorption is of pseudo-first-order with an extrapolated activation energy of 18.3 kJ/mol comparable to that of amine-modified nanocarbons. The richness in functionalities of H2SO4-expanded foams represents a valuable and further pursuable approach to porous carbons alternative to KOH-derived activated carbons.http://www.mdpi.com/2311-5629/2/4/25porous carbonnitrogensulfurCO2nitroanilinesulfuric acid |
| spellingShingle | Enrico Andreoli Andrew R. Barron CO2 Adsorption by para-Nitroaniline Sulfuric Acid-Derived Porous Carbon Foam C porous carbon nitrogen sulfur CO2 nitroaniline sulfuric acid |
| title | CO2 Adsorption by para-Nitroaniline Sulfuric Acid-Derived Porous Carbon Foam |
| title_full | CO2 Adsorption by para-Nitroaniline Sulfuric Acid-Derived Porous Carbon Foam |
| title_fullStr | CO2 Adsorption by para-Nitroaniline Sulfuric Acid-Derived Porous Carbon Foam |
| title_full_unstemmed | CO2 Adsorption by para-Nitroaniline Sulfuric Acid-Derived Porous Carbon Foam |
| title_short | CO2 Adsorption by para-Nitroaniline Sulfuric Acid-Derived Porous Carbon Foam |
| title_sort | co2 adsorption by para nitroaniline sulfuric acid derived porous carbon foam |
| topic | porous carbon nitrogen sulfur CO2 nitroaniline sulfuric acid |
| url | http://www.mdpi.com/2311-5629/2/4/25 |
| work_keys_str_mv | AT enricoandreoli co2adsorptionbyparanitroanilinesulfuricacidderivedporouscarbonfoam AT andrewrbarron co2adsorptionbyparanitroanilinesulfuricacidderivedporouscarbonfoam |