Conversion of d -glucose to 5-hydroxymethylfurfural using Al 2 O 3 -promoted sulphated tin oxide as catalyst

Lopes, M.; Dussan, Karla; Leahy, James J.; Silva, V.T. da

doi:10.1016/j.cattod.2016.05.030

Cited by 47 publications

(29 citation statements)

References 44 publications

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“…The formation of HMF from glucose involves two steps, the isomerization of glucose to fructose and the dehydration of glucose and fructose to HMF, which requires the presence of both Lewis and Bronsted acid sites . Therefore, we sought to convert glucose to HMF by combining BX and Lewis acid metal chlorides (MCl x :CuCl 2 ⋅2 H 2 O, FeCl 3 ⋅6 H 2 O, MgCl 2 ⋅6 H 2 O, SnCl 4 ⋅5 H 2 O, AlCl 3 ⋅6 H 2 O, NiCl 2 ⋅6 H 2 O, LaCl 3 ⋅ n H 2 O, CaCl 2 ⋅2 H 2 O, MnCl 2 ⋅4 H 2 O, CoCl 2 ⋅6 H 2 O).The carboxyl groups of BX are typical Bronsted acid, which can promote the dehydration of fructose to HMF or the rehydration of HMF to LA . Herein, B–Cl was investigated as a representative BX because it can be obtained directly from beet.…”

Section: Resultsmentioning

confidence: 99%

“…The formation of HMF from glucose involves two steps, the isomerization of glucoset of ructose and the dehydration of glucose and fructose to HMF,w hich requires the presence of both Lewis and Bronsted acid sites. [19] [20] Herein, B-Cl was investigated as ar epresentative BX because it can be obtained directly from beet. In the absence of aL ewis acid, the HMF yield was only 3% ( Other BX derivatives were also investigated for the dehydration of glucose in the presence of AlCl 3 .6H 2 O( Ta ble 4);l arge differences in activity were observed.…”

Section: Resultsmentioning

confidence: 99%

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Development of Betaine‐Based Sustainable Catalysts for Green Conversion of Carbohydrates and Biomass into 5‐Hydroxymethylfurfural

Feng

Gao

et al. 2019

ChemSusChem

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Renewable and sustainable betaine‐based catalysts (BX) derived from the betaine sugar industry or ChCl were developed for the production of 5‐hydroxymethylfurfural (HMF) from various carbohydrates. The HMF yields in the BX‐based media reached up to 88 %, 66 %, 37 % and 53 %, for the conversion of fructose, glucose, cellulose, and lignocellulosic biomass, respectively. In addition, choline‐O‐sulfate was synthesized and demonstrated to be an efficient catalyst for the conversion of fructose to HMF. From the perspective of green and sustainable chemistry, this work demonstrates benefits not only in the preparation of sustainable catalysts but also the green production of HMF from biomass.

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Section: Resultsmentioning

confidence: 99%

“…The formation of HMF from glucose involves two steps, the isomerization of glucoset of ructose and the dehydration of glucose and fructose to HMF,w hich requires the presence of both Lewis and Bronsted acid sites. [19] [20] Herein, B-Cl was investigated as ar epresentative BX because it can be obtained directly from beet. In the absence of aL ewis acid, the HMF yield was only 3% ( Other BX derivatives were also investigated for the dehydration of glucose in the presence of AlCl 3 .6H 2 O( Ta ble 4);l arge differences in activity were observed.…”

Section: Resultsmentioning

confidence: 99%

Development of Betaine‐Based Sustainable Catalysts for Green Conversion of Carbohydrates and Biomass into 5‐Hydroxymethylfurfural

Feng

Gao

et al. 2019

ChemSusChem

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“…prepared sulfated ZrO 2 /TiO 2 nanocomposite and applied it for the esterification of LA to ethyl levulinate. Lopes et al . synthesized SO 4 2− /Al 2 O 3 ‐SnO 2 catalyst for the conversion of glucose to HMF.…”

Section: Introductionmentioning

confidence: 99%

“…For instance, Li et al 29 prepared sulfated ZrO 2 /TiO 2 nanocomposite and applied it for the esterification of LA to ethyl levulinate. Lopes et al 30 synthesized SO 4 2− /Al 2 O 3 -SnO 2 catalyst for the conversion of glucose to HMF. Labidi et al 31 reported the elaboration of nanoparticulate SO 4 2− /ZrO 2 catalyst for the conversion of free fatty acids into biofuel.…”

Section: Introductionmentioning

confidence: 99%

Sulfated TiO₂ nanosheets catalyzing conversion of biomass derivatives: influences of the sulfation on distribution of Brønsted and Lewis acidic sites

Shao

Gao

et al. 2020

J of Chemical Tech & Biotech

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BACKGROUND The synthesis of solid acid catalysts of recoverable and environmentally friendly nature has gained increasing attention in recent years. The distribution of Brønsted and Lewis acidic sites on the surface of sulfated metal oxides determines the catalytic performance, which is affected by many key factors, such as the concentration of sulfuric acid impregnated and the morphology of the metal oxides used. In this study, TiO2 nanosheets were successfully synthesized and used as carrier for the preparation of solid acid catalysts. RESULTS The concentration of sulfuric acid for the impregnation resulted in various distributions of Brønsted and Lewis acidic sites on the surface of sulfated TiO2. With a medium concentration of sulfuric acid (1 mol L−1) for the impregnation, the highest ratio of Brønsted to Lewis acidic sites can be achieved, and the catalyst showed superior catalytic activity for the conversion of furfuryl alcohol (FA) to ethyl levulinate (EL) in ethanol and the conversion of fructose to 5‐hydroxymethylfurfural (HMF) in dimethyl sulfoxide (DMSO). CONCLUSION The sulfation of TiO2 nanosheets induced the formation of both Brønsted and Lewis acidic sites. The Brønsted acidic sites were more effective for catalyzing the conversion of FA or fructose. The poor recyclability of the 1.0‐SO42−/TiO2 catalyst in the conversion of FA to EL in ethanol, a protic solvent, was due to the leaching of sulfur species. The deactivation of the catalyst in DMSO was due to coking, which could be resolved via calcination of the coke species in air. © 2019 Society of Chemical Industry

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“…HMF is viewed as a potential ‘‘carbon‐neutral” platform feedstock for the synthesis of a great variety of chemicals and biofuels, such as 2,5‐furandicarboxylic acid, 2,5‐dimethyltetrahydrofuran, and 2,5‐dimethylfuran . In this context, highly efficient conversion of biomass, including cellulose, hemicellulose, glucose, fructose, etc., into HMFhas attracted considerable attention in the past few years . Among them, fructose is more suitable as the raw material to get high HMF yield since it overwhelmingly exists in nature with a furan ring structure, a similar structure to that of HMF.…”

Section: Introductionmentioning

confidence: 99%

AlNb/SBA‐15 Catalysts with Tunable Lewis and Bronsted Acidic Sites for Glucose Conversion to HMF

et al. 2018

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In this paper, a series of AlNb/SBA-15 catalysts with various Al/ Nb atom ratios were prepared by impregnation method for efficient conversion of glucose to 5-hydroxymethylfurfural (HMF). Characterization by SEM, TEM, BET and XRD showed that the microstructure after impregnation of the active components was preserved, similar to that of SBA-15, although the pore size and specific surface area decreased to some extent with the increase of Al/Nb atom ratio due to the thickening of the pore wall, which was due to the deposition of the active component salts. Py-IR and NH 3 -TPD analysis indicated that AlNb/SBA-15 had both Bronsted acid sites and Lewis acid sites simultaneously after incorporation of the Al species and they were tunable by adjusting the Al/Nb atom ratio. The catalyst with Al/Nb atom ratio of 2:3 exhibited the suitable strength of Lewis and Bronsted acid and the highest total acid amount, as a result, showing the highest catalytic activity in glucose dehydration to HMF. As high as 55.7% of HMF yield with 93.4% glucose conversion was obtained when reacting at 170 8C for 6.0 h using methyl iso-butyl ketone (MIBK)/water with a volume ratio of 2 as the reaction media.

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Conversion of d -glucose to 5-hydroxymethylfurfural using Al 2 O 3 -promoted sulphated tin oxide as catalyst

Cited by 47 publications

References 44 publications

Development of Betaine‐Based Sustainable Catalysts for Green Conversion of Carbohydrates and Biomass into 5‐Hydroxymethylfurfural

Development of Betaine‐Based Sustainable Catalysts for Green Conversion of Carbohydrates and Biomass into 5‐Hydroxymethylfurfural

Sulfated TiO₂ nanosheets catalyzing conversion of biomass derivatives: influences of the sulfation on distribution of Brønsted and Lewis acidic sites

AlNb/SBA‐15 Catalysts with Tunable Lewis and Bronsted Acidic Sites for Glucose Conversion to HMF

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Conversion of d -glucose to 5-hydroxymethylfurfural using Al 2 O 3 -promoted sulphated tin oxide as catalyst

Cited by 47 publications

References 44 publications

Development of Betaine‐Based Sustainable Catalysts for Green Conversion of Carbohydrates and Biomass into 5‐Hydroxymethylfurfural

Development of Betaine‐Based Sustainable Catalysts for Green Conversion of Carbohydrates and Biomass into 5‐Hydroxymethylfurfural

Sulfated TiO2 nanosheets catalyzing conversion of biomass derivatives: influences of the sulfation on distribution of Brønsted and Lewis acidic sites

AlNb/SBA‐15 Catalysts with Tunable Lewis and Bronsted Acidic Sites for Glucose Conversion to HMF

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Product

Resources

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Sulfated TiO₂ nanosheets catalyzing conversion of biomass derivatives: influences of the sulfation on distribution of Brønsted and Lewis acidic sites