Sulfur removal from ionic liquid-assisted coal water slurry electrolysis in KNO3 system
Ionic liquid-assisted coal water slurry (CWS) electrolysis was carried out in KNO 3 system with constant current. The effects of ionic liquids including structure, concentration, temperature and time on the removal of sulfur were investigated to intensify desulfurization ratio from CWS electrolysis...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Published: |
2013
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| Online Access: | http://hdl.handle.net/20.500.11937/56313 |
| _version_ | 1848759842386214912 |
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| author | Chen, Z. Gong, X. Wang, Z. Wang, Y. Zhang, Shu Xu, D. |
| author_facet | Chen, Z. Gong, X. Wang, Z. Wang, Y. Zhang, Shu Xu, D. |
| author_sort | Chen, Z. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Ionic liquid-assisted coal water slurry (CWS) electrolysis was carried out in KNO 3 system with constant current. The effects of ionic liquids including structure, concentration, temperature and time on the removal of sulfur were investigated to intensify desulfurization ratio from CWS electrolysis. Given the organic structure of imidazole, the influence of anions on the desulfurization was in the following order: Br - > BF 4 - > Cl - . Given the same anion of Br - , imidazole showed better performance than pyridine in terms of sulfur elimination. With increasing N-butylpyridinium bromide ([BPy]Br) concentration, the desulfurization ratio increased at the initial stage, and then decreased after 0.30 mol/L. Additionally, the desulfurization ratio continuously increased with time and temperature. Finally, the organic sulfur occurrences in coal before and after experiments were characterized by XPS technique. Results showed that the removal of thiophene was improved due to the extraction-oxidation effects and others (i. e. thioethers and sulfoxide) were removed mainly via enhanced oxidation and hydrolysis reactions. |
| first_indexed | 2025-11-14T10:06:18Z |
| format | Journal Article |
| id | curtin-20.500.11937-56313 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:06:18Z |
| publishDate | 2013 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-563132023-08-02T06:39:09Z Sulfur removal from ionic liquid-assisted coal water slurry electrolysis in KNO3 system Chen, Z. Gong, X. Wang, Z. Wang, Y. Zhang, Shu Xu, D. Ionic liquid-assisted coal water slurry (CWS) electrolysis was carried out in KNO 3 system with constant current. The effects of ionic liquids including structure, concentration, temperature and time on the removal of sulfur were investigated to intensify desulfurization ratio from CWS electrolysis. Given the organic structure of imidazole, the influence of anions on the desulfurization was in the following order: Br - > BF 4 - > Cl - . Given the same anion of Br - , imidazole showed better performance than pyridine in terms of sulfur elimination. With increasing N-butylpyridinium bromide ([BPy]Br) concentration, the desulfurization ratio increased at the initial stage, and then decreased after 0.30 mol/L. Additionally, the desulfurization ratio continuously increased with time and temperature. Finally, the organic sulfur occurrences in coal before and after experiments were characterized by XPS technique. Results showed that the removal of thiophene was improved due to the extraction-oxidation effects and others (i. e. thioethers and sulfoxide) were removed mainly via enhanced oxidation and hydrolysis reactions. 2013 Journal Article http://hdl.handle.net/20.500.11937/56313 restricted |
| spellingShingle | Chen, Z. Gong, X. Wang, Z. Wang, Y. Zhang, Shu Xu, D. Sulfur removal from ionic liquid-assisted coal water slurry electrolysis in KNO3 system |
| title | Sulfur removal from ionic liquid-assisted coal water slurry electrolysis in KNO3 system |
| title_full | Sulfur removal from ionic liquid-assisted coal water slurry electrolysis in KNO3 system |
| title_fullStr | Sulfur removal from ionic liquid-assisted coal water slurry electrolysis in KNO3 system |
| title_full_unstemmed | Sulfur removal from ionic liquid-assisted coal water slurry electrolysis in KNO3 system |
| title_short | Sulfur removal from ionic liquid-assisted coal water slurry electrolysis in KNO3 system |
| title_sort | sulfur removal from ionic liquid-assisted coal water slurry electrolysis in kno3 system |
| url | http://hdl.handle.net/20.500.11937/56313 |