Effect of MgCl2 loading on the evolution of reaction intermediates during cellulose fast pyrolysis at 325°C
This study reports the effect of MgCl2 loading on the evolution of reaction intermediates during cellulose fast pyrolysis at 325°C. The loading of MgCl2 significantly changes the reaction pathways of cellulose pyrolysis and enhances the cross-linking of hydroxyl groups to release water even during t...
| Main Authors: | , , , |
|---|---|
| Format: | Journal Article |
| Published: |
Elsevier
2014
|
| Online Access: | http://hdl.handle.net/20.500.11937/31482 |
| _version_ | 1848753392832217088 |
|---|---|
| author | Liu, Dawei Yu, Yun Long, Y. Wu, Hongwei |
| author_facet | Liu, Dawei Yu, Yun Long, Y. Wu, Hongwei |
| author_sort | Liu, Dawei |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | This study reports the effect of MgCl2 loading on the evolution of reaction intermediates during cellulose fast pyrolysis at 325°C. The loading of MgCl2 significantly changes the reaction pathways of cellulose pyrolysis and enhances the cross-linking of hydroxyl groups to release water even during the heating-up stage, as a result of the weakened hydrogen bonding networks during both the wet impregnation and the heating processes. Such a highly cross-linked cellulose strongly affects the evolution of reaction intermediates during the subsequent isothermal pyrolysis at 325°C, i.e., producing the water-soluble intermediates rich in cross-linked structures. The loading of MgCl2 may catalyse the interactions between the water-soluble and water-insoluble portions in pyrolysing cellulose, depending on the Mg distribution. Our results indicate that the water-insoluble Mg has a little effect on the pyrolysis of sugar structures in the water-insoluble portion, which still proceeds in a similar way as that of raw cellulose, i.e., dominantly via depolymerisation. Whereas the water-insoluble Mg has a strong catalytic effect on the pyrolysis of nonsugar structures in the water-insoluble portion into more condensed structures, leading to a high char yield from the pyrolysis of the MgCl2-loaded cellulose. |
| first_indexed | 2025-11-14T08:23:48Z |
| format | Journal Article |
| id | curtin-20.500.11937-31482 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:23:48Z |
| publishDate | 2014 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-314822017-09-13T15:51:05Z Effect of MgCl2 loading on the evolution of reaction intermediates during cellulose fast pyrolysis at 325°C Liu, Dawei Yu, Yun Long, Y. Wu, Hongwei This study reports the effect of MgCl2 loading on the evolution of reaction intermediates during cellulose fast pyrolysis at 325°C. The loading of MgCl2 significantly changes the reaction pathways of cellulose pyrolysis and enhances the cross-linking of hydroxyl groups to release water even during the heating-up stage, as a result of the weakened hydrogen bonding networks during both the wet impregnation and the heating processes. Such a highly cross-linked cellulose strongly affects the evolution of reaction intermediates during the subsequent isothermal pyrolysis at 325°C, i.e., producing the water-soluble intermediates rich in cross-linked structures. The loading of MgCl2 may catalyse the interactions between the water-soluble and water-insoluble portions in pyrolysing cellulose, depending on the Mg distribution. Our results indicate that the water-insoluble Mg has a little effect on the pyrolysis of sugar structures in the water-insoluble portion, which still proceeds in a similar way as that of raw cellulose, i.e., dominantly via depolymerisation. Whereas the water-insoluble Mg has a strong catalytic effect on the pyrolysis of nonsugar structures in the water-insoluble portion into more condensed structures, leading to a high char yield from the pyrolysis of the MgCl2-loaded cellulose. 2014 Journal Article http://hdl.handle.net/20.500.11937/31482 10.1016/j.proci.2014.05.026 Elsevier restricted |
| spellingShingle | Liu, Dawei Yu, Yun Long, Y. Wu, Hongwei Effect of MgCl2 loading on the evolution of reaction intermediates during cellulose fast pyrolysis at 325°C |
| title | Effect of MgCl2 loading on the evolution of reaction intermediates during cellulose fast pyrolysis at 325°C |
| title_full | Effect of MgCl2 loading on the evolution of reaction intermediates during cellulose fast pyrolysis at 325°C |
| title_fullStr | Effect of MgCl2 loading on the evolution of reaction intermediates during cellulose fast pyrolysis at 325°C |
| title_full_unstemmed | Effect of MgCl2 loading on the evolution of reaction intermediates during cellulose fast pyrolysis at 325°C |
| title_short | Effect of MgCl2 loading on the evolution of reaction intermediates during cellulose fast pyrolysis at 325°C |
| title_sort | effect of mgcl2 loading on the evolution of reaction intermediates during cellulose fast pyrolysis at 325°c |
| url | http://hdl.handle.net/20.500.11937/31482 |