Impact of activation on properties of carbon-based solid acid catalysts for the hydrothermal conversion of xylose and hemicelluloses

Lin, Qixuan; Zhang, Chunhui; Wang, Xiaohui; Cheng, Banggui; Mai, Ning; Ren, Junli

doi:10.1016/j.cattod.2018.03.070

Cited by 64 publications

(40 citation statements)

References 30 publications

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“…The density of the -SO 3 H, -COOH and -OH groups of WCSA was determined using the Boehm titration with a slight modication. The method used was previously described in the literature by Lin et al 13…”

Section: Catalyst Characterization and Analysis Of The Total Reducingmentioning

confidence: 99%

Sulfonic-acid-functionalized carbon fiber from waste newspaper as a recyclable carbon based solid acid catalyst for the hydrolysis of cellulose

Gong

Wang

et al. 2019

RSC Adv.

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Section: Catalyst Characterization and Analysis Of The Total Reducingmentioning

confidence: 99%

Sulfonic-acid-functionalized carbon fiber from waste newspaper as a recyclable carbon based solid acid catalyst for the hydrolysis of cellulose

Gong

Wang

et al. 2019

RSC Adv.

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“…Thus, the carbon structure becomes more hydrophobic and less flexible, making it difficult to insert acidic groups in a later stage of functionalization (Zhong and Sels, 2018). In this case, it is common to use high concentrations of acids at elevated temperatures for more efficient functionalization (Ormsby et al, 2012;Villanueva and Marzialetti, 2018;Lin et al, 2019). On the other hand, the presence of carboxyl and hydroxyl groups in sulfonated carbon can make the surface more polar for substrate adsorption such as fructose and lead to hydrogen bond formation (Dong et al, 2015).…”

Section: Catalyst Characterizationmentioning

confidence: 99%

“…A wide variety of wastes, including coffee grounds (Gonçalves et al, 2016b), rice husks (Boonpoke et al, 2013), palm tree (Adinata et al, 2007), coconut (Daud and Ali, 2004), almond (González et al, 2009), glycerin and glycerol (Monteiro et al, 2018), has already been used for this process and the carbons obtained have a wide applicability, being used as catalysts in many hydrogenation reactions (Madduluri et al, 2020), environmental catalysis (Restivo et al, 2017), and photocatalysis (Velasco et al, 2013). The high temperatures used in the carbonization of these residues result in catalysts with poorly developed porosity and surface area, and some carbons undergo a later stage of chemical activation to increase both their porosity and surface area (Lin et al, 2019). Although several reaction types show a significant improvement in results, it is experimentally observed in carbohydrate dehydration that a higher selectivity to 5-HMF is not dependent on a higher surface area, but rather on a higher concentration of total acidic sites on the carbons surface (Wang et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Influence of Dimethylsulfoxide and Dioxygen in the Fructose Conversion to 5-Hydroxymethylfurfural Mediated by Glycerol's Acidic Carbon

et al. 2020

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Both the catalytic production of 5-hydroxymethylfurfural (5-HMF) from carbohydrates and the use of a catalyst obtained from residues stand out for adding value to by-products and wastes. These processes contribute to the circular economy. In this work it was evaluated optimized conditions for 5-HMF production from fructose with high yield and selectivity. The reaction was catalyzed by an acidic carbon obtained from glycerol, a byproduct of the biodiesel industry. Special attention has been given to the use of dimethyl sulfoxide (DMSO) as a solvent and its influence on system activity, both in the presence and absence of O 2. Glycerol's carbon with acidic properties can be effectively used as catalyst in fructose dehydration, allowed achieving conversions close to 100% with 5-HMF selectivities higher than 90%. The catalyst can be reused in consecutive batch runs. The influence of DMSO in the presence of O 2 should be considered in the catalytic activity, as the stabilization of a reaction intermediate by the [O 2 :DMSO] complex is favored and, both fructose conversion and 5-HMF yield increase.

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“…All catalysts were active for the dehydration of xylose to furfural, reaching product yields of 60% and xylose conversions up to 95%. When used directly on hemicellulose, yields to xylooligosaccharides (XOS) were as high as 60%, while furfural yields could reach 40% [79].…”

Section: Dehydration Of Xylose To Furfuralmentioning

confidence: 99%

Catalytic Processes from Biomass-Derived Hexoses and Pentoses: A Recent Literature Overview

2018

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Biomass is a plentiful renewable source of energy, food, feed and chemicals. It fixes about 1–2% of the solar energy received by the Earth through photosynthesis in both terrestrial and aquatic plants like macro- and microalgae. As fossil resources deplete, biomass appears a good complement and eventually a good substitute feedstock, but still needs the development of relatively new catalytic processes. For this purpose, catalytic transformations, whether alone or combined with thermal ones and separation operations, have been under study in recent years. Catalytic biorefineries are based on dehydration-hydrations, hydrogenations, oxidations, epimerizations, isomerizations, aldol condensations and other reactions to obtain a plethora of chemicals, including alcohols, ketones, furans and acids, as well as materials such as polycarbonates. Nevertheless, there is still a need for higher selectivity, stability, and regenerability of catalysts and of process intensification by a wise combination of operations, either in-series or combined (one-pot), to reach economic feasibility. Here we present a literature survey of the latest developments for obtaining value-added products using hexoses and pentoses derived from lignocellulosic material, as well as algae as a source of carbohydrates for subsequent transformations.

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Impact of activation on properties of carbon-based solid acid catalysts for the hydrothermal conversion of xylose and hemicelluloses

Cited by 64 publications

References 30 publications

Sulfonic-acid-functionalized carbon fiber from waste newspaper as a recyclable carbon based solid acid catalyst for the hydrolysis of cellulose

Sulfonic-acid-functionalized carbon fiber from waste newspaper as a recyclable carbon based solid acid catalyst for the hydrolysis of cellulose

Influence of Dimethylsulfoxide and Dioxygen in the Fructose Conversion to 5-Hydroxymethylfurfural Mediated by Glycerol's Acidic Carbon

Catalytic Processes from Biomass-Derived Hexoses and Pentoses: A Recent Literature Overview

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