Influence of RANEY Nickel on the Formation of Intermediates in the Degradation of Lignin
Lignin forms an important part of lignocellulosic biomass and is an abundantly available residue. It is a potential renewable source of phenol. Liquefaction of enzymatic hydrolysis lignin as well as catalytical hydrodeoxygenation of the main intermediates in the degradation of lignin, that is, catec...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | International Journal of Chemical Engineering |
| Online Access: | http://dx.doi.org/10.1155/2012/589749 |
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| author | Daniel Forchheim Ursel Hornung Philipp Kempe Andrea Kruse David Steinbach |
| author_facet | Daniel Forchheim Ursel Hornung Philipp Kempe Andrea Kruse David Steinbach |
| author_sort | Daniel Forchheim |
| collection | DOAJ |
| description | Lignin forms an important part of lignocellulosic biomass and is an abundantly available residue. It is a potential renewable source of phenol. Liquefaction of enzymatic hydrolysis lignin as well as catalytical hydrodeoxygenation of the main intermediates in the degradation of lignin, that is, catechol and guaiacol, was studied. The cleavage of the ether bonds, which are abundant in the molecular structure of lignin, can be realised in near-critical water (573 to 673 K, 20 to 30 MPa). Hydrothermal treatment in this context provides high selectivity in respect to hydroxybenzenes, especially catechol. RANEY Nickel was found to be an adequate catalyst for hydrodeoxygenation. Although it does not influence the cleavage of ether bonds, RANEY Nickel favours the production of phenol from both lignin and catechol. The main product from hydrodeoxygenation of guaiacol with RANEY Nickel was cyclohexanol. Reaction mechanism and kinetics of the degradation of guaiacol were explored. |
| format | Article |
| id | doaj-art-9388f55d7fe244159c02642bfb20703f |
| institution | Kabale University |
| issn | 1687-806X 1687-8078 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Chemical Engineering |
| spelling | doaj-art-9388f55d7fe244159c02642bfb20703f2025-02-03T06:00:36ZengWileyInternational Journal of Chemical Engineering1687-806X1687-80782012-01-01201210.1155/2012/589749589749Influence of RANEY Nickel on the Formation of Intermediates in the Degradation of LigninDaniel Forchheim0Ursel Hornung1Philipp Kempe2Andrea Kruse3David Steinbach4Institute of Catalysis Research and Technology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, GermanyInstitute of Catalysis Research and Technology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, GermanyInstitute of Catalysis Research and Technology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, GermanyInstitute of Catalysis Research and Technology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, GermanyInstitute of Catalysis Research and Technology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, GermanyLignin forms an important part of lignocellulosic biomass and is an abundantly available residue. It is a potential renewable source of phenol. Liquefaction of enzymatic hydrolysis lignin as well as catalytical hydrodeoxygenation of the main intermediates in the degradation of lignin, that is, catechol and guaiacol, was studied. The cleavage of the ether bonds, which are abundant in the molecular structure of lignin, can be realised in near-critical water (573 to 673 K, 20 to 30 MPa). Hydrothermal treatment in this context provides high selectivity in respect to hydroxybenzenes, especially catechol. RANEY Nickel was found to be an adequate catalyst for hydrodeoxygenation. Although it does not influence the cleavage of ether bonds, RANEY Nickel favours the production of phenol from both lignin and catechol. The main product from hydrodeoxygenation of guaiacol with RANEY Nickel was cyclohexanol. Reaction mechanism and kinetics of the degradation of guaiacol were explored.http://dx.doi.org/10.1155/2012/589749 |
| spellingShingle | Daniel Forchheim Ursel Hornung Philipp Kempe Andrea Kruse David Steinbach Influence of RANEY Nickel on the Formation of Intermediates in the Degradation of Lignin International Journal of Chemical Engineering |
| title | Influence of RANEY Nickel on the Formation of Intermediates in the Degradation of Lignin |
| title_full | Influence of RANEY Nickel on the Formation of Intermediates in the Degradation of Lignin |
| title_fullStr | Influence of RANEY Nickel on the Formation of Intermediates in the Degradation of Lignin |
| title_full_unstemmed | Influence of RANEY Nickel on the Formation of Intermediates in the Degradation of Lignin |
| title_short | Influence of RANEY Nickel on the Formation of Intermediates in the Degradation of Lignin |
| title_sort | influence of raney nickel on the formation of intermediates in the degradation of lignin |
| url | http://dx.doi.org/10.1155/2012/589749 |
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