Influence of Brønsted and Lewis acidity of the modified Al-MCM-41 solid acid on cellulose conversion and 5-hydroxylmethylfurfuran selectivity
Copyright © 2020 Elsevier Ltd. All rights reserved..
The modified Al-MCM-41 solid acids with turning Si/Al molar ratio were successfully fabricated through a hydrothermal route and utilized as a suitable catalyst in the cellulose conversion into 5-hydroxylmethylfurfural (5-HMF). The crystal structure, composition, morphologies and porosity of as-synthesized acids were characterized by XRD, FT-IR, N2 adsorption-desorption, TEM and EDS. The 27Al MAS NMR and 29Si-MAS NMR results revealed the existence of both Al framework and Al extra framework. Besides, the existence of medium-weak and strong acid sites, according to Brønsted and Lewis acidity, in Al-MCM-41 acids was confirmed by NH3-TPD and FTIR-pyridine adsorption. The 30Al-MCM-41 solid acid (Si/Al molar ratio = 30) exhibited excellent activity with the highest 5-HMF yield of 40.56% compared to other samples. We also discovered that 5-HMF production, as well as cellulose conversion, strongly depended on the total acid, strong/medium-weak acid ratio, as well as Brønsted/Lewis acid ratio. Therefore, these parameters have been considered as essential factors for the design of solid acid for 5-HMF production.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2021 |
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| Erschienen: |
2021 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:265 |
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| Enthalten in: |
Chemosphere - 265(2021) vom: 15. Feb., Seite 129062 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Pham, Son Tung [VerfasserIn] |
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| Links: |
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| Themen: |
5-HMF yield |
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| Anmerkungen: |
Date Completed 01.01.2021 Date Revised 01.01.2021 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1016/j.chemosphere.2020.129062 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM318166275 |
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| 520 | |a Copyright © 2020 Elsevier Ltd. All rights reserved. | ||
| 520 | |a The modified Al-MCM-41 solid acids with turning Si/Al molar ratio were successfully fabricated through a hydrothermal route and utilized as a suitable catalyst in the cellulose conversion into 5-hydroxylmethylfurfural (5-HMF). The crystal structure, composition, morphologies and porosity of as-synthesized acids were characterized by XRD, FT-IR, N2 adsorption-desorption, TEM and EDS. The 27Al MAS NMR and 29Si-MAS NMR results revealed the existence of both Al framework and Al extra framework. Besides, the existence of medium-weak and strong acid sites, according to Brønsted and Lewis acidity, in Al-MCM-41 acids was confirmed by NH3-TPD and FTIR-pyridine adsorption. The 30Al-MCM-41 solid acid (Si/Al molar ratio = 30) exhibited excellent activity with the highest 5-HMF yield of 40.56% compared to other samples. We also discovered that 5-HMF production, as well as cellulose conversion, strongly depended on the total acid, strong/medium-weak acid ratio, as well as Brønsted/Lewis acid ratio. Therefore, these parameters have been considered as essential factors for the design of solid acid for 5-HMF production | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a 5-HMF yield | |
| 650 | 4 | |a Al-MCM-41 soild acid | |
| 650 | 4 | |a Brønsted and Lewis acidity | |
| 650 | 4 | |a Cellulose conversion | |
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| 700 | 1 | |a Nguyen, Manh B |e verfasserin |4 aut | |
| 700 | 1 | |a Le, Giang H |e verfasserin |4 aut | |
| 700 | 1 | |a Nguyen, Trinh Duy |e verfasserin |4 aut | |
| 700 | 1 | |a Pham, Chinh D |e verfasserin |4 aut | |
| 700 | 1 | |a Le, Thanh Son |e verfasserin |4 aut | |
| 700 | 1 | |a Vu, Tuan A |e verfasserin |4 aut | |
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