Sulfonated mesoporous carbon and silica-carbon nanocomposites for biomass conversion

Zhong, Renbin; Sels, Bert F.

doi:10.1016/j.apcatb.2018.05.012

Cited by 109 publications

(56 citation statements)

References 265 publications

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“…Mesoporous carbons, mesostructured carbon-based composites, and carbon nanofibers have also received great attention for catalytic biomass upgrading. [68][69][70] Owing to unique shape-and porosity-controlled properties, these carbon materials could offer strong active phase-support interactions, which can lead to unusual catalytic activities and selectivities in biomass upgrading.…”

Section: Factors Affecting the Catalytic Activity Of Carbon Materialsmentioning

confidence: 99%

Functionalised heterogeneous catalysts for sustainable biomass valorisation

et al. 2018

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Efficient transformation of biomass to value-added chemicals and high-energy density fuels is pivotal for a more sustainable economy and carbon-neutral society. In this framework, developing potential cascade chemical processes using functionalised heterogeneous catalysts is essential because of their versatile roles towards viable biomass valorisation. Advances in materials science and catalysis have provided several innovative strategies for the design of new appealing catalytic materials with well-defined structures and special characteristics. Promising catalytic materials that have paved the way for exciting scientific breakthroughs in biomass upgrading are carbon materials, metal-organic frameworks, solid phase ionic liquids, and magnetic iron oxides. These fascinating catalysts offer unique possibilities to accommodate adequate amounts of acid-base and redox functional species, hence enabling various biomass conversion reactions in a one-pot way. This review therefore aims to provide a comprehensive account of the most significant advances in the development of functionalised heterogeneous catalysts for efficient biomass upgrading. In addition, this review highlights important progress ensued in tailoring the immobilisation of desirable functional groups on particular sites of the above-listed materials, while critically discussing the role of consequent properties on cascade reactions as well as on other vital processes within the bio-refinery. Current challenges and future opportunities towards a rational design of novel functionalised heterogeneous catalysts for sustainable biomass valorisation are also emphasized.

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Section: Factors Affecting the Catalytic Activity Of Carbon Materialsmentioning

confidence: 99%

Functionalised heterogeneous catalysts for sustainable biomass valorisation

et al. 2018

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“…19 SO 3 H-functionalized carbonaceous materials are very promising solid acid catalysts because they exhibit high stability and surface modiability. 20,21 Recently, several carbonaceous materials, including mesoporous carbon, mesoporous carbonsilica composites, carbon nanotubes, biochar, and carbons prepared by the hydrothermal carbonization of biomass, have been modied with -SO 3 H groups and have shown good catalytic performance in the conversion of carbohydrates to 5-HMF. 19,22,23 However, few studies have used hollow carbonaceous materials as catalysts for the conversion of carbohydrates to 5-HMF.…”

Section: Introductionmentioning

confidence: 99%

Dehydration of fructose, sucrose and inulin to 5-hydroxymethylfurfural over yeast-derived carbonaceous microspheres at low temperatures

Wang

Xie

et al. 2019

RSC Adv.

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This work prepared carbonaceous microspheres by hydrothermal carbonization of yeast cells followed by sulfonation with concentrated sulphuric acid (98%) at room temperature. The obtained carbonaceous product (CM-SO 3 H) had a high acid density (1.80 mmol g À1 ). We evaluated CM-SO 3 H as a solid catalyst for the dehydration of fructose-based carbohydrates to 5-hydroxymethylfurfural (5-HMF) in the ionic liquid 1-butyl-3-methylimidazolium chloride ([BMIM] [Cl]). The effects of the catalyst and substrate loadings as well as the reaction temperature and time on the yield of 5-HMF were investigated. Under the optimum conditions, a 5-HMF yield of up to 83.5% was obtained from fructose with a reaction temperature of 80 C for 30 min. Furthermore, 44.8% and 59.2% 5-HMF yields were obtained from sucrose (80 C for 30 min) and inulin (80 C for 60 min), respectively. CM-SO 3 H and [BMIM][Cl] showed high stability and could be recycled between five and eight times without significant loss of catalytic activity. More importantly, the catalytic system could be applied to high substrate concentrations. CM-SO 3 H combined with [BMIM][Cl] is a promising system for transforming fructose-based carbohydrates into 5-HMF.

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“…The sulfonated polystyrene resins physically or chemically hybridized with porous silicas, mesoporous materials, and porous carbons have been reported and the hybridized materials exhibit improved catalytic performance due to increased diffusion rates and exposure degree of active sites. [29][30][31] The hybrid material with metalloporphyrin-based polymer buried within the macropore of melamine foam could efficiently catalyze the acyl transfer reaction while the polymer itself only afforded low activity. [32] Carbon nanotubes (CNTs) with tubular morphology, high tensile moduli and strengths have already demonstrated their potential applications as support materials for various transformations.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of CNTs@POP‐Salen Core‐Shell Nanostructures for Catalytic Epoxides Hydration

Zhong

et al. 2019

ChemCatChem

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Microporous polymers have been considered as promising heterogeneous catalysts for versatile chemical transformations. However, the mass diffusion barriers through the microporous network still remains a big hindrance. Herein, an efficient and versatile strategy for shortening the mass diffusion pathway through microporous polymer was reported by constructing a CNTs@POP‐salen core‐shell nanostructure. CNTs@POP‐Co(salen) could efficiently catalyze the epoxide hydration reaction at H2O/epoxides ratio as low as 2, demonstrating the efficient cooperation of Co(salen) integrated in the polymer network. CNTs@POP‐Co(salen) showed much higher activity than bulk polymer in propylene oxide (PO) hydration reaction (TOF: 3150 versus 1470 h−1) due to the shortened diffusion pathway, which was further confirmed by adsorption experiment using phenol as probe molecule. Our primary results demonstrated the advantages of core‐shell nanostructures to improve the catalytic activity of microporous polymers by enhancing the mass diffusion during the catalytic process.

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Sulfonated mesoporous carbon and silica-carbon nanocomposites for biomass conversion

Cited by 109 publications

References 265 publications

Functionalised heterogeneous catalysts for sustainable biomass valorisation

Functionalised heterogeneous catalysts for sustainable biomass valorisation

Dehydration of fructose, sucrose and inulin to 5-hydroxymethylfurfural over yeast-derived carbonaceous microspheres at low temperatures

Synthesis of CNTs@POP‐Salen Core‐Shell Nanostructures for Catalytic Epoxides Hydration

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