Cellulose conversion in the presence of catalysts based on Sn(<scp>iv</scp>)

Santos, Jailma Barros dos; Silva, Filipe Lins da; Altino, Felyppe M.; Moreira, Tiago da Silva; Meneghetti, Mário R.; Meneghetti, Simoni Margareti Plentz

doi:10.1039/c2cy20457f

Cited by 26 publications

(17 citation statements)

References 60 publications

(69 reference statements)

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“…The organic acids in the product mixture are generated through degradation of fructose or glucose and also via HMF. 45 The K10(S) had a similar product distribution to that obtained from the montmorillonite K10, although the yields of HMF and glucose were higher, with 26.1 and 17.9% yields, respectively. NH 3 -TPD results showed that the montmorillonite K10 had a higher concentration of strong acid sites than the K10(S), while the pyridine adsorption IR spectra indicated that the montmorillonite K10 contained a greater quantity of Lewis acid sites.…”

Section: Catalytic Activitymentioning

confidence: 67%

Conversion of cellulose to lactic acid catalyzed by erbium-exchanged montmorillonite K10

et al. 2015

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Section: Catalytic Activitymentioning

confidence: 67%

Conversion of cellulose to lactic acid catalyzed by erbium-exchanged montmorillonite K10

et al. 2015

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“…PG is produced by the hydrogenation of PAL by Ru/C via HA. Numerous studies have evaluated the formation of triose by the retro-aldol reaction in LA production [36][37][38][39][40][41][42][43][44][45][46][47][48][49][50]. In such examples, the reaction proceeds with Lewis acidic or basic catalysts that function in water.…”

Section: Studies On the Intermediatesmentioning

confidence: 98%

Selective transformation of glucose into propylene glycol on Ru/C catalysts combined with ZnO under low hydrogen pressures

Hirano

Sagata

Kita

2015

Applied Catalysis A: General

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a b s t r a c tRecently, biomass resources have garnered significant attention as sustainable and renewable raw materials for the production of chemicals. Propylene glycol (PG) is a valuable chemical product that can be synthesized from biomass. Herein, the selective transformation of glucose into PG was investigated on a carbon-supported 5 wt% Ru catalyst (5%-Ru/C) combined with solid acid-base catalysts under low hydrogen pressures. The reaction conditions, namely the amount of ZnO, temperature, and hydrogen pressure, were also evaluated. At a hydrogen pressure of 0.4 MPa, a full conversion of glucose and 38% yield of PG were obtained using the ZnO + Ru/C system at 453 K for 20 h, while the yield of PG on Ru/C alone was only 9.3% under the same conditions. Studies on the reaction mechanism indicated that the transformation of glucose into PG consisted of the isomerization of glucose to fructose, retro-aldol reaction of fructose to triose (dihydroxyacetone and glyceraldehyde), dehydration of glyceraldehyde to pyruvaldehyde, and successive hydrogenation of pyruvaldehyde to PG via hydroxyacetone. The ZnO catalyst promoted both the isomerization and retro-aldol reaction steps, and the Ru catalyst promoted the hydrogenation steps. The retro-aldol reaction, which included the cleavage of C3 C4 bond in glucose, enabled the selective transformation of glucose into PG under low hydrogen pressures. These findings provide novel insights into the efficient synthesis of PG from glucose, which could be achieved by combining and optimizing the retro-aldol and hydrogenation steps.

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“…Tin oxide was utilized in catalytic dehydration of xylose [14]. Jailma Barros reported that cellulose could be dehydrated to HMF with Sn (IV) as Lewis acid directly and achieved a yield of 6.6% [15]. In the separate study, SiO 2 -SnO 2 /C catalyst was examined for degradation of sugars and resulted in 83% yield of lactic acid [16].…”

Section: Introductionmentioning

confidence: 98%

Preparation of SnO2–Co3O4/C biochar catalyst as a Lewis acid for corncob hydrolysis into furfural in water medium

Liu

Yang

Liu

et al. 2015

Journal of Industrial and Engineering Chemistry

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Cellulose conversion in the presence of catalysts based on Sn(iv)

Cited by 26 publications

References 60 publications

Conversion of cellulose to lactic acid catalyzed by erbium-exchanged montmorillonite K10

Conversion of cellulose to lactic acid catalyzed by erbium-exchanged montmorillonite K10

Selective transformation of glucose into propylene glycol on Ru/C catalysts combined with ZnO under low hydrogen pressures

Preparation of SnO2–Co3O4/C biochar catalyst as a Lewis acid for corncob hydrolysis into furfural in water medium

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