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DC Field | Value | Language |
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dc.citation.endPage | 5031 | - |
dc.citation.number | 16 | - |
dc.citation.startPage | 5021 | - |
dc.citation.title | CATALYSIS SCIENCE & TECHNOLOGY | - |
dc.citation.volume | 12 | - |
dc.contributor.author | Lee, Jun Gyeong | - |
dc.contributor.author | Lee, Shinjae | - |
dc.contributor.author | Lee, Hojeong | - |
dc.contributor.author | Kurisingal, Jintu Francis | - |
dc.contributor.author | Han, Seung Hyun | - |
dc.contributor.author | Kim, Yong Hwan | - |
dc.contributor.author | An, Kwangjin | - |
dc.date.accessioned | 2023-12-21T13:48:00Z | - |
dc.date.available | 2023-12-21T13:48:00Z | - |
dc.date.created | 2022-06-24 | - |
dc.date.issued | 2022-08 | - |
dc.description.abstract | The valorization of waste lignin for the production of high value-added chemicals is energetically and environmentally important. In this study, a new catalytic process was developed to produce raw materials for nylon production utilizing 100% of waste lignin emitted from industrial processes. Guaiacol, extracted from technical lignin, was converted to phenol through a hydrodeoxygenation reaction over carbon-supported MoO2 catalysts. The extracted lignin oil served as a carbon source to prepare lignin-derived porous carbons possessing an interconnected porous structure with a large pore size and volume via a nanocasting method. The high dispersion of MoO2 deposited on the porous carbon support enables a high guaiacol conversion (98.4%) and high phenol selectivity (73.7%) compared to those of a typical activated carbon support. The resulting phenol was selectively converted to cyclohexanone or cyclohexanol, depending on the controlled hydrogenation environments over carbon-supported Pd catalysts. The remaining solid residue during lignin extraction was also used as a carbon support to load Pd catalysts. The produced cyclohexanone and cyclohexanol were further converted to caprolactam and adipic acid, the main reagents used to produce nylon-6 and nylon-6,6 fibres, respectively. This process was demonstrated using real kraft and Klason lignin released from industry. The mass of guaiacol produced from 20 g of kraft lignin was 0.07 g, yielding either 0.032 g caprolactam or 0.043 g adipic acid, with a total yield of 0.15-0.25%. This study sheds light on utilizing waste lignin as a resource by producing not only guaiacol raw material for the production of high value-added nylon, but also a carbon support used for catalytic conversion. | - |
dc.identifier.bibliographicCitation | CATALYSIS SCIENCE & TECHNOLOGY, v.12, no.16, pp.5021 - 5031 | - |
dc.identifier.doi | 10.1039/d2cy00522k | - |
dc.identifier.issn | 2044-4753 | - |
dc.identifier.scopusid | 2-s2.0-85131839041 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/59009 | - |
dc.identifier.wosid | 000807024800001 | - |
dc.language | 영어 | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.title | Complete utilization of waste lignin: preparation of lignin-derived carbon supports and conversion of lignin-derived guaiacol to nylon precursors | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.type.docType | Article; Early Access | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | MESOPOROUS CARBON | - |
dc.subject.keywordPlus | ACID | - |
dc.subject.keywordPlus | HYDRODEOXYGENATION | - |
dc.subject.keywordPlus | CYCLOHEXANONE | - |
dc.subject.keywordPlus | VALORIZATION | - |
dc.subject.keywordPlus | PHENOL HYDROGENATION | - |
dc.subject.keywordPlus | CHEMICALS | - |
dc.subject.keywordPlus | CATALYSTS | - |
dc.subject.keywordPlus | KRAFT LIGNIN | - |
dc.subject.keywordPlus | OXIDATIVE DEPOLYMERIZATION | - |
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