Ordered mesoporous Nb–W oxides for the conversion of glucose to fructose, mannose and 5-hydroxymethylfurfural

Guo, Jing; Zhu, Shengyun; Cen, Youliang; Qin, Zhangfeng; Wang, Jianguo; Fan, Wei

doi:10.1016/j.apcatb.2016.07.051

Cited by 99 publications

(49 citation statements)

References 54 publications

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“…Low-cost, mixed-metal oxides are widely applied in catalysis with renewables because of their tunable physicochemical properties closely relatedt oc atalytic activity,f or example, surface area, pore size distribution, and acid/base character. [32] For instance, W-Zr mixed oxidesc an efficiently convert cellulose to lactic acid, [33] ethyl lactate can efficiently be obtained from triose sugars over Sn/Al oxide, [34] and glucose can (through fructose) be dehydrated into 5-hydroxymethylfurfural with Nbdoped WO 3 . [35] In our previous work, Al-Zr mixed oxide was confirmed to be an efficient catalystf or the production of GVL from ethyl levulinate, [23] and in continuationo fo ur research on CTH of biomass-derived chemicals, we expecteda lso such catalysts to be active in CTH of FF to FAOL.…”

Section: Introductionmentioning

confidence: 99%

Catalytic Transfer Hydrogenation of Furfural to Furfuryl Alcohol with Recyclable Al–Zr@Fe Mixed Oxides

Riisager

et al. 2017

ChemCatChem

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A series of magnetic, acid/base bifunctional Al–Zr@Fe3O4 catalysts were successfully prepared by a facile coprecipitation method and utilized in the catalytic transfer hydrogenation (CTH) of furfural to furfuryl alcohol with 2‐propanol as hydrogen source. The physicochemical properties and morphologies of the as‐prepared catalysts were characterized by various techniques, including XRD analysis, N2 physisorption, vibrating sample magnetometry, thermal gravimetry analysis, X‐ray fluorescence spectroscopy, NH3/CO2 temperature‐programmed desorption, SEM, and TEM. The Al7Zr3@Fe3O4(1/1) catalyst with a Al3+/Zr4+/Fe3O4 molar ratio of 21:9:3 was found to exhibit a high furfuryl alcohol yield of 90.5 % in the CTH from furfural at 180 °C after 4 h with a comparatively low activation energy of 45.3 kJ mol−1, as calculated from the Arrhenius equation. Moreover, leaching and recyclability tests confirmed Al7Zr3@Fe3O4(1/1) to function as a heterogeneous catalyst that could be reused for at least five consecutive reaction runs without significant loss of catalytic activity after simple recovery by an external magnet. Notably, the catalyst proved also efficient for hydrogenation of other biomass‐derived furanic aldehydes.

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Section: Introductionmentioning

confidence: 99%

Catalytic Transfer Hydrogenation of Furfural to Furfuryl Alcohol with Recyclable Al–Zr@Fe Mixed Oxides

Riisager

et al. 2017

ChemCatChem

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“…Unlike zeolites, bifunctional Brønsted–Lewis acidic mesoporous tantalum oxide, mesoporous Nb 4 −W 4 oxide, and the porous coordination polymer PCP(Cr)‐SO 3 H‐Cr III were also developed for glucose‐to‐HMF transformation. Of them, an excellent result was achieved for the PCP(Cr)‐SO 3 H‐Cr III catalyst with double Brønsted–Lewis acid centers, in which a sulfonic acid group functioned as the Brønsted acid, whereas Cr 3+ served as the Lewis acid, giving 99.9 % glucose conversion with 80.7 % HMF yield in water/THF at 180 °C after 4 h.…”

Section: Catalytic Processes With Constant Carbon Numbermentioning

confidence: 99%

Catalytic Upgrading of Biomass‐Derived Sugars with Acidic Nanoporous Materials: Structural Role in Carbon‐Chain Length Variation

Saravanamurugan

et al. 2018

ChemSusChem

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Shifting from petroleum‐based resources to inedible biomass for the production of valuable chemicals and fuels is one of the significant aspects in sustainable chemistry for realizing the sustainable development of our society. Various renowned biobased platform molecules, such as 5‐hydroxymethylfurfural, furfural, levulinic acid, and lactic acid, are successfully accessible from the transformation of biobased sugars. To achieve the specific reaction routes, heterogeneous nanoporous acidic materials have served as promising catalysts for the conversion of bio‐sugars in the past decade. This Review summarizes advances in various nanoporous acidic materials for bio‐sugar conversion, in which the number of carbon atoms is variable and controllable with the assistance of the switchable structure of nanoporous materials. The major focus of this Review is on possible reaction pathways/mechanisms and the relationships between catalyst structure and catalytic performance. Moreover, representative examples of catalytic upgrading of biobased platform molecules to biochemicals and fuels through selective C−C cleavage and coupling strategies over nanoporous acidic materials are also discussed.

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“…Glucose is an abundant renewable bio‐based platform compound as it can be readily derived from hydrolysis of cellulose, starch and hemicellulose, and it can also be used for a variety of value‐added chemicals, including levulinic acid (LA), 5‐hydroxymethylfurfural (HMF) and 2,5‐furandicarboxylic acid (FDCA) . During conversion process of glucose to these chemicals, isomerization of glucose to fructose is usually an indispensable step, having significant effect on the conversion efficiency to desired products.…”

Section: Introductionmentioning

confidence: 99%

Isomerization Kinetics of Glucose to Fructose in Aqueous Solution with Magnesium‐Aluminum Hydrotalcites

Wang

Zhang

et al. 2020

ChemistrySelect

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Mg−Al hydrotalcites for catalyzing glucose isomerization to fructose are prepared. Effects of atom ratios of Mg/Al ranging from 1 to 4 and calcination temperatures from 250–650 °C on catalytic performance were examined systematically. It was found that the hydrotalcite (Mg2Al1LDH) calcined at 450 °C with an atom ratio of Mg/Al=2 is an excellent catalyst for glucose isomerization. Characterizations by SEM, EDS, TEM, XRD, FTIR, TG and BET demonstrated that the formed oxide condensed phase as well as the interaction with the alumina helps promote glucose isomerization reaction due to their appropriate basic sites at high calcination temperature. With Mg2Al1‐450 as the catalyst, kinetic model analysis confirmed that the reaction of glucose isomerization to fructose was an exothermal reversible reaction; both the forward and reverse reactions are quasi‐first‐order reactions with activation energies of 71.82 kJ/mol and 48.15 kJ/mol, respectively, while the side reaction is a zero‐order reaction with an activation energy of 94.22 kJ/mol. Therefore, high isomerization reaction temperature is not beneficial to enhance the yield and selectivity of fructose.

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Ordered mesoporous Nb–W oxides for the conversion of glucose to fructose, mannose and 5-hydroxymethylfurfural

Cited by 99 publications

References 54 publications

Catalytic Transfer Hydrogenation of Furfural to Furfuryl Alcohol with Recyclable Al–Zr@Fe Mixed Oxides

Catalytic Transfer Hydrogenation of Furfural to Furfuryl Alcohol with Recyclable Al–Zr@Fe Mixed Oxides

Catalytic Upgrading of Biomass‐Derived Sugars with Acidic Nanoporous Materials: Structural Role in Carbon‐Chain Length Variation

Isomerization Kinetics of Glucose to Fructose in Aqueous Solution with Magnesium‐Aluminum Hydrotalcites

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