Tar reforming using char as catalyst during pyrolysis and gasification of Shengli brown coal
Coal chars were employed to catalyze the in situ tar reforming reactions during the pyrolysis and gasification of Shengli brown coal in a two-stage quartz reactor at different temperatures. Two different chars as catalysts were prepared. One (inactivated char) was prepared from decomposing brown coa...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Published: |
Elsevier
2014
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| Online Access: | http://hdl.handle.net/20.500.11937/55944 |
| _version_ | 1848759746391179264 |
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| author | Wang, F. Zhang, Shu Chen, Z. Liu, C. Wang, Y. |
| author_facet | Wang, F. Zhang, Shu Chen, Z. Liu, C. Wang, Y. |
| author_sort | Wang, F. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Coal chars were employed to catalyze the in situ tar reforming reactions during the pyrolysis and gasification of Shengli brown coal in a two-stage quartz reactor at different temperatures. Two different chars as catalysts were prepared. One (inactivated char) was prepared from decomposing brown coal in inert atmosphere while the other one (activated char) was obtained with additional 10 min steam activation. It was found that the activated char as catalyst has shown a much better catalytic performance for tar reduction than the inactivated char, especially for the tars from the gasification conditions. The catalytic reforming reactions could also cause the increase in the proportion of large aromatic rings in tars, whereas the presence of steam in the reaction zone could see the decrease of large aromatic rings in tars. The catalysts were characterized by SEM, EDX, BET, XRD and Raman, indicating that the high activity of activated char should be mainly attributed to its amorphous carbon structure, large surface area and abundant metal species (e.g. Na, K, Ca and Mg) on its surface. © 2013 Elsevier B.V. All rights reserved. |
| first_indexed | 2025-11-14T10:04:47Z |
| format | Journal Article |
| id | curtin-20.500.11937-55944 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:04:47Z |
| publishDate | 2014 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-559442017-09-13T16:10:52Z Tar reforming using char as catalyst during pyrolysis and gasification of Shengli brown coal Wang, F. Zhang, Shu Chen, Z. Liu, C. Wang, Y. Coal chars were employed to catalyze the in situ tar reforming reactions during the pyrolysis and gasification of Shengli brown coal in a two-stage quartz reactor at different temperatures. Two different chars as catalysts were prepared. One (inactivated char) was prepared from decomposing brown coal in inert atmosphere while the other one (activated char) was obtained with additional 10 min steam activation. It was found that the activated char as catalyst has shown a much better catalytic performance for tar reduction than the inactivated char, especially for the tars from the gasification conditions. The catalytic reforming reactions could also cause the increase in the proportion of large aromatic rings in tars, whereas the presence of steam in the reaction zone could see the decrease of large aromatic rings in tars. The catalysts were characterized by SEM, EDX, BET, XRD and Raman, indicating that the high activity of activated char should be mainly attributed to its amorphous carbon structure, large surface area and abundant metal species (e.g. Na, K, Ca and Mg) on its surface. © 2013 Elsevier B.V. All rights reserved. 2014 Journal Article http://hdl.handle.net/20.500.11937/55944 10.1016/j.jaap.2013.11.013 Elsevier restricted |
| spellingShingle | Wang, F. Zhang, Shu Chen, Z. Liu, C. Wang, Y. Tar reforming using char as catalyst during pyrolysis and gasification of Shengli brown coal |
| title | Tar reforming using char as catalyst during pyrolysis and gasification of Shengli brown coal |
| title_full | Tar reforming using char as catalyst during pyrolysis and gasification of Shengli brown coal |
| title_fullStr | Tar reforming using char as catalyst during pyrolysis and gasification of Shengli brown coal |
| title_full_unstemmed | Tar reforming using char as catalyst during pyrolysis and gasification of Shengli brown coal |
| title_short | Tar reforming using char as catalyst during pyrolysis and gasification of Shengli brown coal |
| title_sort | tar reforming using char as catalyst during pyrolysis and gasification of shengli brown coal |
| url | http://hdl.handle.net/20.500.11937/55944 |