Hydrolysis of Cellulose Selectively into Glucose Over Sulfonated Activated-Carbon Catalyst Under Hydrothermal Conditions

Onda, Ayumu; Ochi, Takafumi; Yanagisawa, Kazumichi

doi:10.1007/s11244-009-9237-x

Cited by 174 publications

(100 citation statements)

References 27 publications

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“…Although the noble metalsolid acid catalysts, such as Pt/zeolites and Pt/sulfatedzirconia, have bifunctional catalysis effects for the dehydroisomerization of butane into isobutene 45), 46) and the isomerization of alkanes 47), 48) and so on, these conventional catalysts are easily collapsed and/or dissolved in hot water with low pH values attributed to the organic acids produced. As discussed above, we achieved the selective hydrolysis of cellulose using the AC _ SO3H catalyst 34), 35) . Carbon materials are highly stable in hot and acidic water.…”

Section: Direct Production Of Gluconic Acid Frommentioning

confidence: 99%

“…This catalyst has the high activity in water for the hydration of 2,3-dimethyl-2-butene at 343 K 32) , and the esterification of higher fatty acids at 353 K 33) . Here, we introduce an efficient green process to combine mildly hydrothermal reactions and solid acid catalysis for the selective hydrolysis of cellulose into glucose at 373-450 K with autogenetic pressures 34), 35) . A sulfonated activated-carbon (AC _ SO3H) was used as an effective solid acid catalyst below 450 K (Scheme 1).…”

Section: Introductionmentioning

confidence: 99%

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Selective Hydrolysis of Cellulose and Polysaccharides into Sugars by Catalytic Hydrothermal Method Using Sulfonated Activated-carbon

Onda

2012

J. Jpn. Petrol. Inst.

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Mildly hydrothermal reaction using solid acid catalysts for cellulose hydrolysis into glucose has potential abilities to be one of the key technologies for a future sustainable society using cellulose biomass. Among the solid acid catalysts tested, such as H-form zeolite catalysts and sulfated and sulfonated catalysts, sulfonated activatedcarbon (AC _ SO3H) catalyst showed remarkably high yield of glucose in the hydrolysis of cellulose with β-1,4-glycosidic bonds under hydrothermal conditions at temperatures around 423 K. The AC _ SO3H catalyst with hydrothermal pre-treatment had excellent catalytic properties attributed to the high hydrothermal stability and the strong acid sites of the sulfo functional groups and the activated carbon surfaces for polysaccharide adsorption. A bifunctional sulfonated activated-carbon supported platinum (Pt/AC _ SO3H) was prepared by impregnation of platinum on activated carbon (AC) and sulfonation of the prepared Pt/AC. Gluconic acid was produced from polysaccharides, such as starch and cellobiose, in water at 393 K under air by a one-pot process using the Pt/AC _ SO3H catalyst.

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Section: Direct Production Of Gluconic Acid Frommentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Selective Hydrolysis of Cellulose and Polysaccharides into Sugars by Catalytic Hydrothermal Method Using Sulfonated Activated-carbon

Onda

2012

J. Jpn. Petrol. Inst.

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“…A variant of the hydrothermal pretreatment consists in the use of catalytic hydrothermal reaction that uses a solid catalyst (for example, amorphous carbon that contains -SO 3 H groups) and results in higher amounts of fermentable sugars (Onda et al, 2009). …”

Section: Hydrothermal Methods Of Pretreatmentmentioning

confidence: 99%

Combined Microwave-Acid Pretreatment of the Biomass

Balcu¹,

Macarie²,

Segneanu³

et al. 2011

Progress in Biomass and Bioenergy Production

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“…This indicates the existence of palladium species in the metallic state. The broad peak that appears at 2θ = 43.8° relates to the (110) plane in PdO [33], which indicate the presence of Pd(II) species while the broad peak at 2θ = 24.17° relates to the plane (002) in activated carbon support [34]. The used sample presents the existence of all the peaks related to metallic Pd and the activated carbon as they appear in the fresh sample.…”

Section: Catalyst Characterizationmentioning

confidence: 99%

Transfer Dehydrogenation of 1-Phenylethanol Over Pd/C Under Mild Conditions: Effect of Reaction Conditions and Optimization of Catalytic Performance

Albilali

Dimitratos

2017

Catal Lett

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The catalytic activity of 5 wt% Pd/C has been evaluated using the liquid phase transfer dehydrogena-tion of 1-phenylethanol as a model reaction. The reaction parameters such as catalyst loading and stirring rate have been optimized to determine the required conditions to carry out the reaction under kinetic regime control. By per-forming the reaction under different temperatures, the value of apparent activation energy has been determined as being 61 kJ/mol. Furthermore, the influence of thermal treat-ment of 5 wt% Pd/C catalyst on its catalytic performance for the liquid phase transfer dehydrogenation of 1-pheny-lethanol has been investigated in a temperature range of 110-200 °C. The results reveal that the catalyst activity is strongly dependent on the ratio between Pd/PdO species. The fresh and used catalysts were characterized using a range of characterization techniques (XRPD, XPS, TEM, SEM-EDX, and BET) in order to investigate structureactivity relationships. The 5 wt% Pd/C exhibit high conversion (90%) and selectivity (91%) toward acetophenone under mild conditions. Moreover, the reusability tests have been carried out, and the results show that the catalyst preserves 80% of its initial catalytic activity after five cycles indicating the high stability of the 5 wt% Pd/C catalyst in the liquid phase transfer dehydrogenation of 1-phenylethanol. The influence of reaction conditions on the catalytic activity is also discussed.

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Hydrolysis of Cellulose Selectively into Glucose Over Sulfonated Activated-Carbon Catalyst Under Hydrothermal Conditions

Cited by 174 publications

References 27 publications

Selective Hydrolysis of Cellulose and Polysaccharides into Sugars by Catalytic Hydrothermal Method Using Sulfonated Activated-carbon

Selective Hydrolysis of Cellulose and Polysaccharides into Sugars by Catalytic Hydrothermal Method Using Sulfonated Activated-carbon

Combined Microwave-Acid Pretreatment of the Biomass

Transfer Dehydrogenation of 1-Phenylethanol Over Pd/C Under Mild Conditions: Effect of Reaction Conditions and Optimization of Catalytic Performance

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