One-step preparation of carbonaceous solid acid catalysts by hydrothermal carbonization of glucose for cellulose hydrolysis

Qi, Xinhua; Lian, Youfen; Yan, Lulu; Smith, Richard L.

doi:10.1016/j.catcom.2014.07.035

Cited by 69 publications

(32 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…A one-pot synthesis of -SO 3 H and COOH-functionalised carbon solid acids was successfully performed by hydrothermal carbonisation of glucose in the presence of sulfosalicylic acid and acrylic acid, respectively. 173 The functionalisation led to a change in the particles shape and resulted in good catalytic activity for the hydrolysis of cellulose. Importantly, the HSO 3functionalised carbon solid acid showed excellent stability up to five recycles without leaching of -SO 3 H species.…”

Section: Biomass-derived Carbon Catalystsmentioning

confidence: 99%

Functionalised heterogeneous catalysts for sustainable biomass valorisation

et al. 2018

View full text Add to dashboard Cite

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.

show abstract

Section: Biomass-derived Carbon Catalystsmentioning

confidence: 99%

Functionalised heterogeneous catalysts for sustainable biomass valorisation

et al. 2018

View full text Add to dashboard Cite

show abstract

“…According to the SEM micrographs, the hydrothermal carbon exhibited a uniform particle size whereas the CM‐SO 3 H particle showed a wide particle size distribution that resulted from the sulfonation step, which not only functionalized the carbon microspheres with sulfonic groups (SO 3 H) but also catalyzed the dehydration to furan compounds. The excess furan compounds promoted fast polymerization to grow nonuniform carbon particles . After KOH activation at 700°C and sulfonation, the morphology of the hydrothermal carbon (P‐C‐SO 3 H) contained cavities (diameter >50 nm), as shown in Figures c and d.…”

Section: Resultsmentioning

confidence: 98%

Production of furan based biofuel with an environmental benign carbon catalyst

Tran

Kongparakul

Reubroycharoen

et al. 2017

Env Prog and Sustain Energy

View full text Add to dashboard Cite

A sulfonated carbon material was developed and investigated as an environmentally benign catalyst for furfural production. The sulfonic acid functionality was introduced by sequential hydrothermal carbonization and sulfonation of xylose. The morphology and textural properties were examined by scanning electron microscopy and N2 sorption measurements, respectively. The presence of sulfonic acid on the surface was proven by both Fourier transform infrared spectroscopy and X‐ray photoelectron spectroscopy analysis. Meanwhile, the acid properties were studied using an NH3‐TPD profile. Two different sulfonated carbons that was activated with KOH before sulfonation and one that was compared. The KOH‐activated sulfonated carbon contained both a porous structure and a high sulfonic acid content that improved the furfural yield and selectivity by more than 50% compared to the nonactivated sulfonated carbon. The reusability of the catalyst was investigated by monitoring the furfural selectivity over several reaction cycles, and after the 3rd cycle, a reduction in the selectivity from 72 to 30% was observed. However, the acid‐functionalized carbon could still be useful for furfural production due to its low environmental impact in both the preparation and disposal steps. © 2017 American Institute of Chemical Engineers Environ Prog, 37: 1455–1461, 2018

show abstract

“…For example, the hydrothermal carbonization was performed for cellulose in the 220-250 °C range [40], for glucose between 170 and 500 °C [19,[41][42][43][44], for sucrose at 190 °C [45] and for starch at 600 °C [46]. Process times were typically between 4 and 12 h. For some of the materials, the graphitic nature has been improved by annealing the sample after synthesis.…”

Section: Discussionmentioning

confidence: 99%

Diamond-Like Carbon Nanofoam from Low-Temperature Hydrothermal Carbonization of a Sucrose/Naphthalene Precursor Solution

Frese

Mitchell

Bowers

et al. 2017

View full text Add to dashboard Cite

Unusual structure of low-density carbon nanofoam, different from the commonly observed micropearl morphology, was obtained by hydrothermal carbonization (HTC) of a sucrose solution where a specific small amount of naphthalene had been added. Helium-ion microscopy (HIM) was used to obtain images of the foam yielding micron-sized, but non-spherical particles as structural units with a smooth foam surface. Raman spectroscopy shows a predominant sp 2 peak, which results from the graphitic internal structure. A strong sp 3 peak is seen in X-ray photoelectron spectroscopy (XPS). Electrons in XPS are emitted from the near surface region which implies that the graphitic microparticles have a diamond-like foam surface layer. The occurrence of separated sp 2 and sp 3 regions is uncommon for carbon nanofoams and reveals an interesting bulk-surface structure of the compositional units.

show abstract

One-step preparation of carbonaceous solid acid catalysts by hydrothermal carbonization of glucose for cellulose hydrolysis

Cited by 69 publications

References 34 publications

Functionalised heterogeneous catalysts for sustainable biomass valorisation

Functionalised heterogeneous catalysts for sustainable biomass valorisation

Production of furan based biofuel with an environmental benign carbon catalyst

Diamond-Like Carbon Nanofoam from Low-Temperature Hydrothermal Carbonization of a Sucrose/Naphthalene Precursor Solution

Contact Info

Product

Resources

About