Fast catalytic pyrolysis of lignin into monocyclic aromatic hydrocarbons over in-situ generated Fe-based catalyst
This study examined the catalytic pyrolysis of kraft lignin using an in-situ generated Fe-based catalyst from iron ore. The fresh and spent catalysts were characterized by a transmission electron microscope to investigate the morphological changes of the catalysts. To evaluate the catalysts′ perform...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Energy Environmental Protection
2024-04-01
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| Series: | 能源环境保护 |
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| Online Access: | https://eep1987.com/en/article/4873 |
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| _version_ | 1849337794172813312 |
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| author | ZHANG Jing SHEN Yang ZHU Linyu LIU Haoran* ZHOU Zhongyue* |
| author_facet | ZHANG Jing SHEN Yang ZHU Linyu LIU Haoran* ZHOU Zhongyue* |
| author_sort | ZHANG Jing |
| collection | DOAJ |
| description | This study examined the catalytic pyrolysis of kraft lignin using an in-situ generated Fe-based catalyst from iron ore. The fresh and spent catalysts were characterized by a transmission electron microscope to investigate the morphological changes of the catalysts. To evaluate the catalysts′ performance, a segmented pyrolysis reactor coupled with time-of-flight mass spectrometry was employed. The results showed that the fresh catalysts had a particle-like morphology, while the spent catalysts appeared sintered. Compared to unreduced iron ore and commercial Fe_2O_3, reduced iron ore significantly promoted the production of monocyclic aromatic hydrocarbons. A yield of monocyclic aromatic hydrocarbons reached 81% at the optimized reaction temperature of 550 ℃, with benzene, toluene, xylene and trimethylbenzene accounting for 46%, 34%, 13% and 7% respectively. Moreover, the possible pathway for kraft lignin via catalytic pyrolysis was proposed based on dehydroxylation and demethoxylation. This work suggests that a low-cost iron ore catalyst could potentially be applied to pyrolyze kraft lignin to produce valuable bio-based aromatic hydrocarbons. |
| format | Article |
| id | doaj-art-e14a5b76c2ac476ba8cf2d0dde14f286 |
| institution | Kabale University |
| issn | 2097-4183 |
| language | zho |
| publishDate | 2024-04-01 |
| publisher | Editorial Office of Energy Environmental Protection |
| record_format | Article |
| series | 能源环境保护 |
| spelling | doaj-art-e14a5b76c2ac476ba8cf2d0dde14f2862025-08-20T03:44:35ZzhoEditorial Office of Energy Environmental Protection能源环境保护2097-41832024-04-0138219019710.20078/j.eep.20240205Fast catalytic pyrolysis of lignin into monocyclic aromatic hydrocarbons over in-situ generated Fe-based catalystZHANG Jing0SHEN Yang1ZHU Linyu2LIU Haoran*3ZHOU Zhongyue*4School of Mechanical Engineering, Shanghai Jiao Tong UniversitySchool of Mechanical Engineering, Shanghai Jiao Tong UniversitySchool of Mechanical Engineering, Shanghai Jiao Tong University1. School of Mechanical Engineering, Shanghai Jiao Tong University; 2. China Energy Engineering Group Anhui Electric Power Design Institute Co., Ltd.School of Mechanical Engineering, Shanghai Jiao Tong UniversityThis study examined the catalytic pyrolysis of kraft lignin using an in-situ generated Fe-based catalyst from iron ore. The fresh and spent catalysts were characterized by a transmission electron microscope to investigate the morphological changes of the catalysts. To evaluate the catalysts′ performance, a segmented pyrolysis reactor coupled with time-of-flight mass spectrometry was employed. The results showed that the fresh catalysts had a particle-like morphology, while the spent catalysts appeared sintered. Compared to unreduced iron ore and commercial Fe_2O_3, reduced iron ore significantly promoted the production of monocyclic aromatic hydrocarbons. A yield of monocyclic aromatic hydrocarbons reached 81% at the optimized reaction temperature of 550 ℃, with benzene, toluene, xylene and trimethylbenzene accounting for 46%, 34%, 13% and 7% respectively. Moreover, the possible pathway for kraft lignin via catalytic pyrolysis was proposed based on dehydroxylation and demethoxylation. This work suggests that a low-cost iron ore catalyst could potentially be applied to pyrolyze kraft lignin to produce valuable bio-based aromatic hydrocarbons. https://eep1987.com/en/article/4873catalytic pyrolysislignintime-of-flight mass spectrometryiron ore catalystmonocyclic aromatic hydrocarbons |
| spellingShingle | ZHANG Jing SHEN Yang ZHU Linyu LIU Haoran* ZHOU Zhongyue* Fast catalytic pyrolysis of lignin into monocyclic aromatic hydrocarbons over in-situ generated Fe-based catalyst 能源环境保护 catalytic pyrolysis lignin time-of-flight mass spectrometry iron ore catalyst monocyclic aromatic hydrocarbons |
| title | Fast catalytic pyrolysis of lignin into monocyclic aromatic hydrocarbons over in-situ generated Fe-based catalyst |
| title_full | Fast catalytic pyrolysis of lignin into monocyclic aromatic hydrocarbons over in-situ generated Fe-based catalyst |
| title_fullStr | Fast catalytic pyrolysis of lignin into monocyclic aromatic hydrocarbons over in-situ generated Fe-based catalyst |
| title_full_unstemmed | Fast catalytic pyrolysis of lignin into monocyclic aromatic hydrocarbons over in-situ generated Fe-based catalyst |
| title_short | Fast catalytic pyrolysis of lignin into monocyclic aromatic hydrocarbons over in-situ generated Fe-based catalyst |
| title_sort | fast catalytic pyrolysis of lignin into monocyclic aromatic hydrocarbons over in situ generated fe based catalyst |
| topic | catalytic pyrolysis lignin time-of-flight mass spectrometry iron ore catalyst monocyclic aromatic hydrocarbons |
| url | https://eep1987.com/en/article/4873 |
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