Tailored sulfonated carbons: unraveling enhanced catalytic dynamics for fructose dehydration under conventional and microwave heating
This investigation is centered on the synthesis and evaluation of sulfonated carbons (SCs) employed as catalysts in the transformation of fructose into 5-hydroxymethylfurfural (5-HMF). The sulfonated carbons were synthesized through carbonization and in situ sulfonation in the presence of H 2 SO 4 ,...
Saved in:
| Published in: | RSC sustainability Vol. 2; no. 5; pp. 1456 - 1471 |
|---|---|
| Main Authors: | , , , , |
| Format: | Journal Article |
| Language: | English |
| Published: |
08-05-2024
|
| Online Access: | Get full text |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | This investigation is centered on the synthesis and evaluation of sulfonated carbons (SCs) employed as catalysts in the transformation of fructose into 5-hydroxymethylfurfural (5-HMF). The sulfonated carbons were synthesized through carbonization and
in situ
sulfonation in the presence of H
2
SO
4
, using glycerol and glucose as precursors. Experimental conditions were systematically optimized to achieve an appropriate quantity and density of surface acidic sites, primarily sulfonic and carboxylic groups, pivotal for the fructose dehydration reaction. The catalytic performance of these sulfonated carbons was assessed under both conventional and microwave heating. Notably, the most favorable outcomes were observed in a microwave-assisted system, achieving an 80% conversion at 120 C within a concise 5 min reaction time. This feat was realized using a 5 wt% fructose solution in dimethylsulfoxide (DMSO) and a 5 wt% catalyst, with selectivity to 5-HMF reaching values as high as 98%. The findings elucidate the impact of the heating mode, alongside the textural properties and surface density of acid groups, providing valuable insights for the optimization of catalysts in fructose conversion processes. This investigation provides pertinent insights into the domain, underscored by the significance of fine-tuning synthesis conditions and reaction parameters for the development of effective catalysts in the context of fructose-to-5-HMF conversion.
Cooperation among active sites within a strongly acidic carbon allowed 80% conversion at 120 C within a 5-minute reaction period. |
|---|---|
| Bibliography: | Wagner Alves Carvalho has a bachelors degree in chemistry from the State University of Campinas (1990), a masters degree in chemistry from the State University of Campinas (1992) and Doctor in Sciences from the State University of Campinas (1997). He did a post-doctoral internship at the Faculty of Chemical Engineering at the State University of Campinas and an internship as a visiting professor at the Center for Surface Chemistry and Catalysis, University of Leuven (K.U.Leuven), Belgium. He is currently an associate professor at the Federal University of ABC and master's/doctorate advisor in the postgraduate program in science and technology/chemistry at UFABC. He was Vice-Rector from 2018 to 2022 and is currently Pro-Rector of Research at UFABC. He has experience in chemistry, with an emphasis on catalysis and adsorption processes, with research on the following topics: hydrogenation and catalytic oxidation, polyol and lignin conversion reactions, environmental control, effluent treatment, molecular sieves, natural zeolites, clays, niobia, and activated carbons. Letcia Ferreira Lima Machado is a master's student in chemistry at the Federal University of ABC-UFABC. She graduated with a bachelor's degree in chemistry with an emphasis on technological chemistry from the Fluminense Federal University-UFF (2020). In the period 2017-2018 she was a CNPq Scientific Initiation Fellow at the Molecular Modeling Laboratory of the Institute of Exact Sciences-UFF, having worked with molecular modeling of active compounds against HSV-1. Gabrielle Mathias Reis is a PhD student in science and technology/chemistry (UFABC-in progress) and scholarship holder of PRH/ANP N49 from UFABC (FINEP/FUNDEP Management). He has a masters degree in science and technology in the field of chemistry from the Federal University of ABC (2021) and a bachelor's degree in chemistry from Universidade Federal Fluminense (2018). He has experience in chemistry in catalysis and adsorption aimed at green chemistry, mainly on the following topics: determination and quantification of heavy metals through zeolites, treatment of industrial waste and biomass, development of new catalysts for the conversion of biomass, acid carbon, and characterization of solids. Renan Silva Nunes is a PhD student in science and technology in the area of chemistry at UFABC through the Industrial Academic Doctorate Program with a sandwich period in Portugal at the Instituto Superior Tcnico of the University of Lisbon, having also worked at the Instituto Superior de Engenharia de Lisboa (ISEL). He has experience in the areas of physical chemistry, materials engineering, and chemometrics. He has worked on the following topics: (1) the development of catalysts, adsorbents, and nanomaterials with applications in catalysis, adsorption, and disinfection; (2) advanced treatment of sanitary and industrial effluents; (3) valorization of biomass and industrial waste; (4) nanotechnology; (5) chemometrics and design of experiments (DoE); (6) optimization and multivariate modeling of chemical processes; (7) technological innovation, patents and applied research. Electronic supplementary information (ESI) available. See DOI https://doi.org/10.1039/d4su00007b Dalmo Mandelli has a bachelor's degree, masters degree, and doctorate in chemistry from UNICAMP (1992, 1994, and 1999, respectively). He developed part of his PhD at the Delft University of Technology (Netherlands). He interned at the University of Bergen (Norway), Rheinisch-Westfaelische Technische Hochschule (Aachen, Germany), and Katholieke Universiteit Leuven (Belgium). He is currently an international relations advisor, professor, and researcher at the Federal University of ABC, working in catalysis (alkene metathesis reactions, oxidation, hydrogenation, hydrogenolysis, esterification, and etherification of organic compounds, including natural products) using environmentally friendly processes to produce inputs for the petroleum industry, plastics, flavors, and pharmaceutical products. He has experience in chemometrics and the identification and quantification of organic compounds by GC, GC-MS, HPLC, NMR, and IR. In 2021 he won the Kurt Politzer Prize for the Technology and Innovation-Researcher Category. |
| ISSN: | 2753-8125 2753-8125 |
| DOI: | 10.1039/d4su00007b |