Conversion of Cellulose to 5-HMF in the Presence of Silica-Alumina Catalysts Synthesized by Dual Template at Low Temperature

Halit Levent Hoşgün; Özlem Topçu; Emir Zafer Hoşgün; Berrin Bozan

Article Details

Conversion of Cellulose to 5-HMF in the Presence of Silica-Alumina Catalysts Synthesized by Dual Template at Low Temperature

Authors:

Halit Levent Hoşgün | Özlem Topçu | Emir Zafer Hoşgün | Berrin Bozan

Publisher:

Sakarya University

Main Topics:

Chemical Engineering

Journal:

Sakarya University Journal of Science Vol.27 Issue 4, pp.781-791

Document Type:

Article

Publication Date:

8/2023

Document Language:

English

Document ID (Org No.):

2001294004

pISSN:

2147-835X

Keywords:

Abstract:

 In this study, which incorporates many principles of green chemistry use of renewable feedstocks, catalysis, improvement of energy efficiency, and harmless solvents and auxiliaries, the single-phase catalytic conversion of cellulose to 5-HMF in over silica-alumina catalysts was investigated. A series of dual-template silica-alumina catalysts with CTAB as the main template and F127 or triethylamine TEA as the co-template were synthesized at a low temperature of 60 C and characterized by XRD, N2 adsorption-desorption technique, FT-IR and pyridine adsorption FT-IR. The surface area is increased by using the second template in silica-alumina catalyst. In addition, the acidity of the surface was changed by using the second template. The cellulose conversion and yield of 5-HMF increased from 36 to 52 and from 3.13 to 4.24, respectively, due to the properties gained by using the second template. 52 cellulose conversion and 8.13 selectivity of 5-HMF were obtained in aqueous medium, 220 C and 6 h reaction time with the catalyst using TEA as co-template. Eco-friendly silica catalysts synthesized at low temperatures with a dual template can be considered as a potential alternative for the conversion of cellulose into value-added biobased products.

 In this study, which incorporates many principles of green chemistry use of renewable feedstocks, catalysis, improvement of energy efficiency, and harmless solvents and auxiliaries, the single-phase catalytic conversion of cellulose to 5-HMF in over silica-alumina catalysts was investigated. A series of dual-template silica-alumina catalysts with CTAB as the main template and F127 or triethylamine TEA as the co-template were synthesized at a low temperature of 60 C and characterized by XRD, N2 adsorption-desorption technique, FT-IR and pyridine adsorption FT-IR. The surface area is increased by using the second template in silica-alumina catalyst. In addition, the acidity of the surface was changed by using the second template. The cellulose conversion and yield of 5-HMF increased from 36 to 52 and from 3.13 to 4.24, respectively, due to the properties gained by using the second template. 52 cellulose conversion and 8.13 selectivity of 5-HMF were obtained in aqueous medium, 220 C and 6 h reaction time with the catalyst using TEA as co-template. Eco-friendly silica catalysts synthesized at low temperatures with a dual template can be considered as a potential alternative for the conversion of cellulose into value-added biobased products.

 In this study, which incorporates many principles of green chemistry use of renewable feedstocks, catalysis, improvement of energy efficiency, and harmless solvents and auxiliaries, the single-phase catalytic conversion of cellulose to 5-HMF in over silica-alumina catalysts was investigated. A series of dual-template silica-alumina catalysts with CTAB as the main template and F127 or triethylamine TEA as the co-template were synthesized at a low temperature of 60 C and characterized by XRD, N2 adsorption-desorption technique, FT-IR and pyridine adsorption FT-IR. The surface area is increased by using the second template in silica-alumina catalyst. In addition, the acidity of the surface was changed by using the second template. The cellulose conversion and yield of 5-HMF increased from 36 to 52 and from 3.13 to 4.24, respectively, due to the properties gained by using the second template. 52 cellulose conversion and 8.13 selectivity of 5-HMF were obtained in aqueous medium, 220 C and 6 h reaction time with the catalyst using TEA as co-template. Eco-friendly silica catalysts synthesized at low temperatures with a dual template can be considered as a potential alternative for the conversion of cellulose into value-added biobased products.

 In this study, which incorporates many principles of green chemistry use of renewable feedstocks, catalysis, improvement of energy efficiency, and harmless solvents and auxiliaries, the single-phase catalytic conversion of cellulose to 5-HMF in over silica-alumina catalysts was investigated. A series of dual-template silica-alumina catalysts with CTAB as the main template and F127 or triethylamine TEA as the co-template were synthesized at a low temperature of 60 C and characterized by XRD, N2 adsorption-desorption technique, FT-IR and pyridine adsorption FT-IR. The surface area is increased by using the second template in silica-alumina catalyst. In addition, the acidity of the surface was changed by using the second template. The cellulose conversion and yield of 5-HMF increased from 36 to 52 and from 3.13 to 4.24, respectively, due to the properties gained by using the second template. 52 cellulose conversion and 8.13 selectivity of 5-HMF were obtained in aqueous medium, 220 C and 6 h reaction time with the catalyst using TEA as co-template. Eco-friendly silica catalysts synthesized at low temperatures with a dual template can be considered as a potential alternative for the conversion of cellulose into value-added biobased products.

Article Details

Conversion of Cellulose to 5-HMF in the Presence of Silica-Alumina Catalysts Synthesized by Dual Template at Low Temperature

Authors:

Halit Levent Hoşgün | Özlem Topçu | Emir Zafer Hoşgün | Berrin Bozan

Publisher:

Sakarya University

Main Topics:

Chemical Engineering

Journal:

Sakarya University Journal of Science Vol.27 Issue 4, pp.781-791

Document Type:

Article

Publication Date:

8/2023

Document Language:

English

Document ID (Org No.):

2001294004

pISSN:

2147-835X

Cellulose

5-HMF

heterogeneous catalysis

green chemistry

Issues

Article Details

Conversion of Cellulose to 5-HMF in the Presence of Silica-Alumina Catalysts Synthesized by Dual Template at Low Temperature

Authors: Halit Levent Hoşgün | Özlem Topçu | Emir Zafer Hoşgün | Berrin Bozan

Publisher: Sakarya University

Main Topics: Chemical Engineering

Journal: Sakarya University Journal of Science Vol.27 Issue 4, pp.781-791

Document Type: Article

Publication Date: 8/2023

Document Language: English

Document ID (Org No.): 2001294004

pISSN: 2147-835X

Cellulose

5-HMF

heterogeneous catalysis

green chemistry

Issues

Authors:

Halit Levent Hoşgün | Özlem Topçu | Emir Zafer Hoşgün | Berrin Bozan

Publisher:

Sakarya University

Main Topics:

Chemical Engineering

Journal:

Sakarya University Journal of Science Vol.27 Issue 4, pp.781-791

Document Type:

Article

Publication Date:

8/2023

Document Language:

English

Document ID (Org No.):

2001294004

pISSN:

2147-835X