PVP-stabilized heteropolyacids as reusable self-assembling catalysts for alcoholysis of cellulosic saccharides

Chen, Jin; Fang, Xiaolong; Duan, Xinping; Ye, Linmin; Lin, Haiqiang; Yuan, Youzhu

doi:10.1039/c3gc40994e

Cited by 35 publications

(23 citation statements)

References 24 publications

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“…5B were assigned depending on the binding energy since the nitrogen functionalities were derived from same parent polymeric structure [43]. In addition, Yuan's group reported that a shoulder peak at a higher binding energy than that of the parent PVP indicated the evolution of protonated nitrogen species [44]. On the basis of previous reports, quaternary nitrogens (N-Q) are considered to be a determining factor for the positive surface charge of magnetite filled carbon microparticles.…”

Section: A Determining Factor For Cationic and Lipophilic Functionalimentioning

confidence: 99%

Tri-functionality of Fe3O4-embedded carbon microparticles in microalgae harvesting

Seo

Lee

Praveenkumar

et al. 2015

Chemical Engineering Journal

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Section: A Determining Factor For Cationic and Lipophilic Functionalimentioning

confidence: 99%

Tri-functionality of Fe3O4-embedded carbon microparticles in microalgae harvesting

Seo

Lee

Praveenkumar

et al. 2015

Chemical Engineering Journal

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“…ChemSusChem 2017ChemSusChem , 10,2547ChemSusChem -2559 www.chemsuschem.org lized-H 4 SiW 12 O 40 (PVP-HSiW) catalyst through self-assembly in alcohol. [19] This material possesses an ionic liquid-like structure, owing to the strong interaction between protonated PVP and HSiW anion. PVP-HSiW gave good reusability tests for 5a nd 19 cycles in the butanolysis of cellulose and cellobiose in butanol medium, respectively.H owever,t he addition of water resulted in less recycling number of PVP-HSiW due to the serious leachingo fH SiW.…”

Section: Alcoholysis Of Cellulose To Alkyl Glucosidesmentioning

confidence: 97%

“…Although supported heteropolyacids exhibit superior catalytic performance for the decomposition of cellulose, they suffer from severe leaching in water. To solve this problem, Yuan and co‐workers (Figure ) fabricated a polyvinylpyrrolidone‐stabilized‐H 4 SiW 12 O 40 (PVP–HSiW) catalyst through self‐assembly in alcohol . This material possesses an ionic liquid‐like structure, owing to the strong interaction between protonated PVP and HSiW anion.…”

Section: Alcoholysis Of Lignocellulosementioning

confidence: 99%

“…Although supported heteropolyacids exhibit superior catalytic performance for the decomposition of cellulose, they suffer from severel eaching in water.T os olve this problem, Yuan and co-workers( Figure 2) fabricated ap olyvinylpyrrolidone-stabi- Reproduced from Ref. [19] with permission from The Royal Society of Chemistry. ChemSusChem 2017ChemSusChem , 10,2547ChemSusChem -2559 www.chemsuschem.org lized-H 4 SiW 12 O 40 (PVP-HSiW) catalyst through self-assembly in alcohol.…”

Section: Alcoholysis Of Cellulose To Alkyl Glucosidesmentioning

confidence: 99%

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Alcoholysis: A Promising Technology for Conversion of Lignocellulose and Platform Chemicals

et al. 2017

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In the catalytic conversion of lignocellulose to valuable products, the first entry point is to break down these biopolymers to sugar units or aromatic monomers, which is conventionally achieved by hydrolysis in water medium. Recent years have seen tremendous progress in the alcoholysis process, which has remarkable advantages, such as the avoidance of treating waste water, suppression of humins or chars, and enhancement of reaction rate and product yield. Advances have been focused on the alcoholysis of cellulose, hemicellulose, and lignin to alkyl glucosides, xylosides, and aromatic monomers, respectively. Alcoholysis of the platform molecule furfuryl alcohol (FAL) to alkyl levulinate (AL) and integrated alcoholysis of cellulose and furfural into AL are also summarized. This Minireview highlights the comparisons between alcoholysis and hydrolysis, the reaction mechanism of alcoholysis, and future challenges for industrial applications.

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“…More importantly, the HPA-ionic liquids catalyst can be completely recovered and reused six times without significant performance loss (Figure 20). In 2013, Chen et al synthesized the polyvinylpyrrolidonestabilized heteropolyacids (PVP-HPAs), a kind of reusable self-assembling catalysts for conversion of cellulose (Chen et al, 2013). A model for the synthesis of PVP-HPAs is shown in Scheme 18 and the alcoholysis diagram of cellulose is shown in Scheme 19.…”

Section: Assembled Hpasmentioning

confidence: 99%

Heteropoly Acid-Based Catalysts for Hydrolytic Depolymerization of Cellulosic Biomass

Luo

et al. 2020

Front. Chem.

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Cellulose is the most abundant source of biomass, which can be converted into monosaccharide or other chemical platform molecules for the sustainable production of chemicals and fuels. Acid catalysts can promote hydrolytic degradation of cellulose into valuable platform molecules, which is of great significance in the development of chemicals and biofuels. However, there are still some shortcomings and limitations of the catalysts for the hydrolytic degradation of cellulosic biomass. Heteropoly acid (HPA), as a green catalyst, seems to be more conducive to the degradation of cellulosic biomass due to its extreme acidity. HPAs can be designed in homogeneous and heterogeneous systems. Moreover, they can be easily separated from the products in both systems by a simple extraction process. According to the unique properties of HPAs (e.g., good solubility, high thermal stability, and strong acidity), using heteropoly acid-based catalysts to depolymerize and convert cellulose into value-added chemicals and biofuels has become one of the most remarkable processes in chemistry for sustainability. In this review, the characteristics, advantages, and applications of HPAs in different categories for cellulose degradation, especially hydrolysis hydrolytic degradation, are summarized. Moreover, the mechanisms of HPAs catalysts in the effective degradation of cellulosic biomass are discussed. This review provides more avenues for the development of renewed and robust HPAs for cellulose degradation in the future.

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PVP-stabilized heteropolyacids as reusable self-assembling catalysts for alcoholysis of cellulosic saccharides

Cited by 35 publications

References 24 publications

Tri-functionality of Fe3O4-embedded carbon microparticles in microalgae harvesting

Tri-functionality of Fe3O4-embedded carbon microparticles in microalgae harvesting

Alcoholysis: A Promising Technology for Conversion of Lignocellulose and Platform Chemicals

Heteropoly Acid-Based Catalysts for Hydrolytic Depolymerization of Cellulosic Biomass

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