Kaolin: A Natural Low-Cost Material as Catalyst for Isomerization of Glucose to Fructose

Pienkoß, Fabian; Ochoa‐Hernández, Cristina; Theyssen, Nils; Leitner, Walter

doi:10.1021/acssuschemeng.8b01151

Cited by 26 publications

(18 citation statements)

References 40 publications

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“…In a different work, Leitner et al used kaolin to conduct this reaction, whose advantage is its wide availability and inexpensive price. The study focuses on the screening of different kaolin samples, among which Strem-2008 is the most active, and, then, the optimization of conditions using rational experiment design in continuous flow [26].…”

Section: Isomerization To Fructose and Reactions To Products Through mentioning

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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Section: Isomerization To Fructose and Reactions To Products Through mentioning

confidence: 99%

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

2018

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“…However, Sn‐Beta is not commercially available because of the complicated preparation procedures and long preparation period as well as containing a toxic heavy metal of Sn, and thereby is restricted to be widely applied in glucose isomerization. Recently, some green catalysts such as attapulgite, imogolite, and basic amino acids were attempted for the reaction and were found to show a certain activity for glucose isomerization [32–34] …”

Section: Introductionmentioning

confidence: 99%

Enhanced conversion of glucose to fructose over naturalattapulgite catalyst promoted by CeO₂ in water

Jiang

Zhao

et al. 2020

ChemistrySelect

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Fructose is an important platform compound for the production of chemicals and renewable fuels. Here, the CeO2/ATP catalysts were developed for glucose isomerization in water. The effects of CeO2 loading, glucose concentration and the catalyst dosage to glucose ratio on the activity for the reaction were investigated. Glucose was easily transformed over ATP in the presence of CeO2, and the 10 % CeO2/ATP catalyst exhibited a good fructose yield of 36.4 %. Meanwhile, the reaction activity of glucose was affected by glucose concentration and the catalyst dosage to glucose ratio, and more fructose would be generated at lower glucose concentration, wherein the highest yield of fructose was obtained 39.2 % at 5 % of glucose solution with the catalyst dosage to glucose ratio of 0.1. In addition, the characterization resultsrevealed that CeO2 had a positive interaction with ATP on the adjustment of its structural properties and the amount and distribution of basic sites, and therefore facilitated glucose isomerization.

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“…Pienkob et al . have reported on a kaolin Al 2 Si 2 O 5 (OH) 4 based catalyst as a cheap alternative for the isomerization of glucose to fructose in methanol . The catalyst exhibits bifunctional Lewis and Brønsted acid activities that enable conversion of glucose to methyl‐fructoside (MF) at maximum yield of 52%.…”

Section: Introductionmentioning

confidence: 99%

“…In the last few decades, several studies have demonstrated the use of a solid base catalysts which bypasses the need of using an alkaline solution. [13,15,16,19] Delidovich demonstrated the use of hydrophobic Mg-Al hydrotalcite. Fructose yield in aqueous phase over hydrotalcites reached up to 40%.…”

Section: Introductionmentioning

confidence: 99%

“…Pienkob et al have reported on a kaolin Al 2 Si 2 O 5 (OH) 4 based catalyst as a cheap alternative for the isomerization of glucose to fructose in methanol. [16] The catalyst exhibits bifunctional Lewis and Brønsted acid activities that enable conversion of glucose to methyl-fructoside (MF) at maximum yield of 52%. However, at higher glucose concentrations in the feed solution there is a significant decrease in MF yields (30% at 8 wt%, 24% at 13 wt %) due to increased proportion of methyl-gluco-furanosides from direct etherification as a parallel reaction to glucose isomerization.…”

Section: Introductionmentioning

confidence: 99%

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Facile Molecular Catalysis for Isomerization of Glucose to Fructose Using KMnO₄ in Water

2020

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This research demonstrates the eco‐friendly conversion of glucose to fructose in an aqueous solution of potassium permanganate (KMnO4) via a hydrothermal method. A series of reactions have been completed at different temperatures, times, and concentrations of the catalyst. The examination of the glucose to fructose transformation was determined by using quantitative HPLC, and 13C‐NMR analyses. 29% fructose yield was found with 68% fructose selectivity, at 90 °C for an 8 h reaction in aqueous solution. The catalytic activity of KMnO4 was correlated with its Lewis acidity. The outcomes of these experiments provided a better understanding of sugar transformations in the KMnO4 aqueous solution. The mechanism of glucose isomerization has been proposed based on supporting transformations utilizing Lewis acids for the isomerization of glucose.

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Kaolin: A Natural Low-Cost Material as Catalyst for Isomerization of Glucose to Fructose

Cited by 26 publications

References 40 publications

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

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

Enhanced conversion of glucose to fructose over naturalattapulgite catalyst promoted by CeO₂ in water

Facile Molecular Catalysis for Isomerization of Glucose to Fructose Using KMnO₄ in Water

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Kaolin: A Natural Low-Cost Material as Catalyst for Isomerization of Glucose to Fructose

Cited by 26 publications

References 40 publications

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

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

Enhanced conversion of glucose to fructose over naturalattapulgite catalyst promoted by CeO2 in water

Facile Molecular Catalysis for Isomerization of Glucose to Fructose Using KMnO4 in Water

Contact Info

Product

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About

Enhanced conversion of glucose to fructose over naturalattapulgite catalyst promoted by CeO₂ in water

Facile Molecular Catalysis for Isomerization of Glucose to Fructose Using KMnO₄ in Water