Investigation of deactivation mechanisms of a solid acid catalyst during esterification of the bio-oils from mallee biomass
This study reports the deactivation mechanisms of the solid acid catalyst Amberlyst 70 during the esterification of bio-oils from mallee biomass and the methods for catalyst regeneration. The metal ions in bio-oil deactivated Amberlyst 70 via ion exchange with the hydrogen ions on/in catalyst, which...
| Main Authors: | , , , , , , , |
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| Format: | Journal Article |
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Elsevier
2013
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| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.11937/35416 |
| _version_ | 1848754491032076288 |
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| author | Hu, Xun Lievens, Caroline Mourant, Daniel Wang, Yi Wu, Liping Gunawan, Richard Song, Yao Li, Chun-Zhu |
| author_facet | Hu, Xun Lievens, Caroline Mourant, Daniel Wang, Yi Wu, Liping Gunawan, Richard Song, Yao Li, Chun-Zhu |
| author_sort | Hu, Xun |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | This study reports the deactivation mechanisms of the solid acid catalyst Amberlyst 70 during the esterification of bio-oils from mallee biomass and the methods for catalyst regeneration. The metal ions in bio-oil deactivated Amberlyst 70 via ion exchange with the hydrogen ions on/in catalyst, which changed structure of catalysts and reduced availability of acidic sites. N-containing organics reacted with the hydrogen ions on/in catalyst, forming neutral salts and resulting in complete catalyst deactivation. Polymers formed during the esterification of bio-oils deposited on/in catalyst, reducing the accessibility of catalytic sites. Washing with solvents could remove some adsorbed organics and restore some catalytic activity but not much. In comparison, ion exchange in a concentrated sulfuric acid removes most of metal ions and the N-containing organics and significantly improves the catalytic activity. |
| first_indexed | 2025-11-14T08:41:15Z |
| format | Journal Article |
| id | curtin-20.500.11937-35416 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:41:15Z |
| publishDate | 2013 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-354162017-09-13T15:19:34Z Investigation of deactivation mechanisms of a solid acid catalyst during esterification of the bio-oils from mallee biomass Hu, Xun Lievens, Caroline Mourant, Daniel Wang, Yi Wu, Liping Gunawan, Richard Song, Yao Li, Chun-Zhu Polymer Metal ions Bio-oil esterification Catalyst deactivation and regeneration Ion exchange This study reports the deactivation mechanisms of the solid acid catalyst Amberlyst 70 during the esterification of bio-oils from mallee biomass and the methods for catalyst regeneration. The metal ions in bio-oil deactivated Amberlyst 70 via ion exchange with the hydrogen ions on/in catalyst, which changed structure of catalysts and reduced availability of acidic sites. N-containing organics reacted with the hydrogen ions on/in catalyst, forming neutral salts and resulting in complete catalyst deactivation. Polymers formed during the esterification of bio-oils deposited on/in catalyst, reducing the accessibility of catalytic sites. Washing with solvents could remove some adsorbed organics and restore some catalytic activity but not much. In comparison, ion exchange in a concentrated sulfuric acid removes most of metal ions and the N-containing organics and significantly improves the catalytic activity. 2013 Journal Article http://hdl.handle.net/20.500.11937/35416 10.1016/j.apenergy.2013.04.078 Elsevier restricted |
| spellingShingle | Polymer Metal ions Bio-oil esterification Catalyst deactivation and regeneration Ion exchange Hu, Xun Lievens, Caroline Mourant, Daniel Wang, Yi Wu, Liping Gunawan, Richard Song, Yao Li, Chun-Zhu Investigation of deactivation mechanisms of a solid acid catalyst during esterification of the bio-oils from mallee biomass |
| title | Investigation of deactivation mechanisms of a solid acid catalyst during esterification of the bio-oils from mallee biomass |
| title_full | Investigation of deactivation mechanisms of a solid acid catalyst during esterification of the bio-oils from mallee biomass |
| title_fullStr | Investigation of deactivation mechanisms of a solid acid catalyst during esterification of the bio-oils from mallee biomass |
| title_full_unstemmed | Investigation of deactivation mechanisms of a solid acid catalyst during esterification of the bio-oils from mallee biomass |
| title_short | Investigation of deactivation mechanisms of a solid acid catalyst during esterification of the bio-oils from mallee biomass |
| title_sort | investigation of deactivation mechanisms of a solid acid catalyst during esterification of the bio-oils from mallee biomass |
| topic | Polymer Metal ions Bio-oil esterification Catalyst deactivation and regeneration Ion exchange |
| url | http://hdl.handle.net/20.500.11937/35416 |