Modification of natural clinoptilolite and ZSM-5 with different oxides and studying of the obtained products in lignin pyrolysis
In this work, different metal oxides (MO) supported on two types of zeolites: 1) natural clinoptilolite (NZ) and 2) synthetic zeolite, ZSM-5 were prepared and tested as catalysts in the fast pyrolysis of hardwood lignin. NZ was modified with the CaO and MgO by a simple two steps procedure c...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Serbian Chemical Society
2015-01-01
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| Series: | Journal of the Serbian Chemical Society |
| Subjects: | |
| Online Access: | http://www.doiserbia.nb.rs/img/doi/0352-5139/2015/0352-51391400109M.pdf |
| _version_ | 1818154768839737344 |
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| author | Milovanović Jelena A. Stensrød Ruth Elisabeth Myhrvold Elisabeth M. Tschentscher Roman Stöcker Michael Lazarević Slavica S. Rajić Nevenka Z. |
| author_facet | Milovanović Jelena A. Stensrød Ruth Elisabeth Myhrvold Elisabeth M. Tschentscher Roman Stöcker Michael Lazarević Slavica S. Rajić Nevenka Z. |
| author_sort | Milovanović Jelena A. |
| collection | DOAJ |
| description | In this work, different metal oxides (MO) supported on two types of zeolites:
1) natural clinoptilolite (NZ) and 2) synthetic zeolite, ZSM-5 were prepared
and tested as catalysts in the fast pyrolysis of hardwood lignin. NZ was
modified with the CaO and MgO by a simple two steps procedure consisting of
an ion exchange reaction and a subsequent calcination at 773 K. The synthetic
ZSM-5 was modified with several MO species (Ni, Cu, Ca, Mg) by a wet
impregnation and calcination at 873 K. Тhe prepared catalysts were
characterized by X-ray diffraction analysis (XRD), scanning electron
microscopy and energy dispersive X-ray analysis (SEM/EDS) and measurement of
specific surface area (BET method). Acid sites were characterized and
quantified by pyridine (py) absorption using Fourier transform infrared
spectroscopy (FTIR). The catalysts exhibit catalytic activity depanding on
modification, reaction temperature and of the MO contents. The highest yield
of useful phenol in bio-oil was obtained with NiO/ZSM-5 (34.8 wt.%) which
exhibits the highest specific surface area and the highest concetration of
Brönsted and Lewis acid sites. The studied catalysts did not increase
significantly the content of polycyclic aromatic hydrocarbons (PAHs) and
heavy compounds compared to non-catalytic experiment. [Projekat Ministarstva
nauke Republike Srbije, br. 172018] |
| first_indexed | 2024-12-11T14:31:46Z |
| format | Article |
| id | doaj.art-5eaf9f47be124e81abc053cc60364b8f |
| institution | Directory Open Access Journal |
| issn | 0352-5139 1820-7421 |
| language | English |
| last_indexed | 2024-12-11T14:31:46Z |
| publishDate | 2015-01-01 |
| publisher | Serbian Chemical Society |
| record_format | Article |
| series | Journal of the Serbian Chemical Society |
| spelling | doaj.art-5eaf9f47be124e81abc053cc60364b8f2022-12-22T01:02:22ZengSerbian Chemical SocietyJournal of the Serbian Chemical Society0352-51391820-74212015-01-0180571772910.2298/JSC310714109M0352-51391400109MModification of natural clinoptilolite and ZSM-5 with different oxides and studying of the obtained products in lignin pyrolysisMilovanović Jelena A.0Stensrød Ruth Elisabeth1Myhrvold Elisabeth M.2Tschentscher Roman3Stöcker Michael4Lazarević Slavica S.5Rajić Nevenka Z.6Faculty of Technology and Metallurgy, Innovation Centre, BelgradeSINTEF, Oslo, NorwaySINTEF, Oslo, NorwaySINTEF, Oslo, NorwaySINTEF, Oslo, NorwayFaculty of Technology and Metallurgy, BelgradeFaculty of Technology and Metallurgy, BelgradeIn this work, different metal oxides (MO) supported on two types of zeolites: 1) natural clinoptilolite (NZ) and 2) synthetic zeolite, ZSM-5 were prepared and tested as catalysts in the fast pyrolysis of hardwood lignin. NZ was modified with the CaO and MgO by a simple two steps procedure consisting of an ion exchange reaction and a subsequent calcination at 773 K. The synthetic ZSM-5 was modified with several MO species (Ni, Cu, Ca, Mg) by a wet impregnation and calcination at 873 K. Тhe prepared catalysts were characterized by X-ray diffraction analysis (XRD), scanning electron microscopy and energy dispersive X-ray analysis (SEM/EDS) and measurement of specific surface area (BET method). Acid sites were characterized and quantified by pyridine (py) absorption using Fourier transform infrared spectroscopy (FTIR). The catalysts exhibit catalytic activity depanding on modification, reaction temperature and of the MO contents. The highest yield of useful phenol in bio-oil was obtained with NiO/ZSM-5 (34.8 wt.%) which exhibits the highest specific surface area and the highest concetration of Brönsted and Lewis acid sites. The studied catalysts did not increase significantly the content of polycyclic aromatic hydrocarbons (PAHs) and heavy compounds compared to non-catalytic experiment. [Projekat Ministarstva nauke Republike Srbije, br. 172018]http://www.doiserbia.nb.rs/img/doi/0352-5139/2015/0352-51391400109M.pdflignincatalystsnatural zeoliteZSM-5bio-oilphenol |
| spellingShingle | Milovanović Jelena A. Stensrød Ruth Elisabeth Myhrvold Elisabeth M. Tschentscher Roman Stöcker Michael Lazarević Slavica S. Rajić Nevenka Z. Modification of natural clinoptilolite and ZSM-5 with different oxides and studying of the obtained products in lignin pyrolysis Journal of the Serbian Chemical Society lignin catalysts natural zeolite ZSM-5 bio-oil phenol |
| title | Modification of natural clinoptilolite and ZSM-5 with different oxides and studying of the obtained products in lignin pyrolysis |
| title_full | Modification of natural clinoptilolite and ZSM-5 with different oxides and studying of the obtained products in lignin pyrolysis |
| title_fullStr | Modification of natural clinoptilolite and ZSM-5 with different oxides and studying of the obtained products in lignin pyrolysis |
| title_full_unstemmed | Modification of natural clinoptilolite and ZSM-5 with different oxides and studying of the obtained products in lignin pyrolysis |
| title_short | Modification of natural clinoptilolite and ZSM-5 with different oxides and studying of the obtained products in lignin pyrolysis |
| title_sort | modification of natural clinoptilolite and zsm 5 with different oxides and studying of the obtained products in lignin pyrolysis |
| topic | lignin catalysts natural zeolite ZSM-5 bio-oil phenol |
| url | http://www.doiserbia.nb.rs/img/doi/0352-5139/2015/0352-51391400109M.pdf |
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