Guaiacol, a model lignin compound, conversion to catechol over SBA-15 and ZSM-5 catalyst in a fixed bed reactor
Biomass conversion to value added chemicals to be used as industrial platform molecules for further synthesis of commodity chemicals has opened new window for scientists. Biomass is a lignocellulosic compound and it requires technological development since biomass is a complex molecule of linear, cy...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2024-07-01
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| Series: | South African Journal of Chemical Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1026918524000489 |
| _version_ | 1797203116366495744 |
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| author | Vinay Shah Uplabdhi Tyagi Dinesh Kumar |
| author_facet | Vinay Shah Uplabdhi Tyagi Dinesh Kumar |
| author_sort | Vinay Shah |
| collection | DOAJ |
| description | Biomass conversion to value added chemicals to be used as industrial platform molecules for further synthesis of commodity chemicals has opened new window for scientists. Biomass is a lignocellulosic compound and it requires technological development since biomass is a complex molecule of linear, cyclic and aromatic hydrocarbons. Lignin being aromatic in nature can beneficial for the production of phenolic hydrocarbons. In this work conversion of Guaiacol, a model lignin compound to different aromatic hydrocarbon is performed over pure silica and alumina silica catalysts e.g. SBA-15and ZSM-5 in a fixed bed catalytic reactor. SBA-15 material was synthesized at different aging time leading to improvement in surface area and pore diameter whereas ZSM-5 was pre-treated with H3PO4 and KOH to modify their acidic strength. Maximum Guaiacol conversion in absence of catalyst was obtained aa 90.1 % at 550oC, 97.33 % at 550 °c in presence of SBA-15 (C) and 95.33 % in presence of P/ZSM-5, indicating the catalyst helps in enhancing the conversion, however depends on the type of catalysts and its properties like surface area, pore diameter and Lews/Bronsted acid strength. Similarly the selectivity of catechol was observed to be maximum with SBA-15 (C) as compared to other catalyst owing to its high surface area and large pore diameter. The GCMS analysis of the liquid product obtained includes Dimethyl phenol, 2-dimethoxy benzene, 2-ethyl,5-methyl phenol, catechol, Ethynylanisole and O-cresol |
| first_indexed | 2024-04-24T08:14:13Z |
| format | Article |
| id | doaj.art-addfd707b79d46dabcb36d5257b8002d |
| institution | Directory Open Access Journal |
| issn | 1026-9185 |
| language | English |
| last_indexed | 2024-04-24T08:14:13Z |
| publishDate | 2024-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | South African Journal of Chemical Engineering |
| spelling | doaj.art-addfd707b79d46dabcb36d5257b8002d2024-04-17T04:48:36ZengElsevierSouth African Journal of Chemical Engineering1026-91852024-07-01493542Guaiacol, a model lignin compound, conversion to catechol over SBA-15 and ZSM-5 catalyst in a fixed bed reactorVinay Shah0Uplabdhi Tyagi1Dinesh Kumar2University School of Chemical Technology, GGS Indraprastha University, Delhi, 110078, IndiaUniversity School of Chemical Technology, GGS Indraprastha University, Delhi, 110078, IndiaCorresponding author.; University School of Chemical Technology, GGS Indraprastha University, Delhi, 110078, IndiaBiomass conversion to value added chemicals to be used as industrial platform molecules for further synthesis of commodity chemicals has opened new window for scientists. Biomass is a lignocellulosic compound and it requires technological development since biomass is a complex molecule of linear, cyclic and aromatic hydrocarbons. Lignin being aromatic in nature can beneficial for the production of phenolic hydrocarbons. In this work conversion of Guaiacol, a model lignin compound to different aromatic hydrocarbon is performed over pure silica and alumina silica catalysts e.g. SBA-15and ZSM-5 in a fixed bed catalytic reactor. SBA-15 material was synthesized at different aging time leading to improvement in surface area and pore diameter whereas ZSM-5 was pre-treated with H3PO4 and KOH to modify their acidic strength. Maximum Guaiacol conversion in absence of catalyst was obtained aa 90.1 % at 550oC, 97.33 % at 550 °c in presence of SBA-15 (C) and 95.33 % in presence of P/ZSM-5, indicating the catalyst helps in enhancing the conversion, however depends on the type of catalysts and its properties like surface area, pore diameter and Lews/Bronsted acid strength. Similarly the selectivity of catechol was observed to be maximum with SBA-15 (C) as compared to other catalyst owing to its high surface area and large pore diameter. The GCMS analysis of the liquid product obtained includes Dimethyl phenol, 2-dimethoxy benzene, 2-ethyl,5-methyl phenol, catechol, Ethynylanisole and O-cresolhttp://www.sciencedirect.com/science/article/pii/S1026918524000489LigninGuaiacolZSM-5SBA-15Aging timePre-treatment |
| spellingShingle | Vinay Shah Uplabdhi Tyagi Dinesh Kumar Guaiacol, a model lignin compound, conversion to catechol over SBA-15 and ZSM-5 catalyst in a fixed bed reactor South African Journal of Chemical Engineering Lignin Guaiacol ZSM-5 SBA-15 Aging time Pre-treatment |
| title | Guaiacol, a model lignin compound, conversion to catechol over SBA-15 and ZSM-5 catalyst in a fixed bed reactor |
| title_full | Guaiacol, a model lignin compound, conversion to catechol over SBA-15 and ZSM-5 catalyst in a fixed bed reactor |
| title_fullStr | Guaiacol, a model lignin compound, conversion to catechol over SBA-15 and ZSM-5 catalyst in a fixed bed reactor |
| title_full_unstemmed | Guaiacol, a model lignin compound, conversion to catechol over SBA-15 and ZSM-5 catalyst in a fixed bed reactor |
| title_short | Guaiacol, a model lignin compound, conversion to catechol over SBA-15 and ZSM-5 catalyst in a fixed bed reactor |
| title_sort | guaiacol a model lignin compound conversion to catechol over sba 15 and zsm 5 catalyst in a fixed bed reactor |
| topic | Lignin Guaiacol ZSM-5 SBA-15 Aging time Pre-treatment |
| url | http://www.sciencedirect.com/science/article/pii/S1026918524000489 |
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