Decomposition of Cellulose and Glucose in Hot-Compressed Water under Catalyst-Free Conditions.

Minowa, Tomoaki; Fang, Zhen; Ogi, Tomoko; Várhegyi, Gábor

doi:10.1252/jcej.31.131

Cited by 126 publications

(95 citation statements)

References 7 publications

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“…In a parallel, it was c Alkane selectivity (%) = (moles of C in gaseous alkanes/total moles of C in gas phase) 9 100 [2] d Hydrogen yield is defined as the amount of hydrogen in the gaseous products normalized by the amount of hydrogen that would be present if the carbon atoms in the initial feed had all participated in the reforming reaction found that part of the carbon was reversibly adsorbed on the catalyst and could be washed away by ethanol, which was consistent with the reference describe elsewhere [21]. The above results indicated that the side degradation reactions severely occurred during the APR of glucose [22]. However, it has been reported recently by Dumesic et al that the degradation liquid products could be further efficiently converted to specific liquid fuels by integrating several flow reactors operated in a cascade mode [23].…”

Section: H 2 Chemisorption and O 2 Uptakesupporting

confidence: 75%

Characterization and Catalytic Properties of the Ni/Al2O3 Catalysts for Aqueous-phase Reforming of Glucose

Wen

et al. 2008

Catal Lett

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Two Ni/Al 2 O 3 catalysts with high Ni loadings of 36 wt% and 48 wt%, which possess high activities for aqueous-phase reforming of glucose, have been successfully prepared by a novel two-step impregnation method. The catalytic performance was investigated at 533 K and autogenous pressure in a batch reactor and a significant enhancement in hydrogen yield was observed over the catalyst prepared by two-step impregnation as compared to the corresponding catalyst prepared by conventional single impregnation. The catalysts were characterized by XRD, N 2 adsorption/desorption, H 2 chemisorption, O 2 uptake, TPO, H 2 -TPR and TEM. It was found that two-step impregnation yielded catalysts with higher nickel dispersion as well as smaller nickel particle size compared to single impregnation.

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Section: H 2 Chemisorption and O 2 Uptakesupporting

confidence: 75%

Characterization and Catalytic Properties of the Ni/Al2O3 Catalysts for Aqueous-phase Reforming of Glucose

Wen

et al. 2008

Catal Lett

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“…Based on the works of Kruse and co-workers [44,45], Cortright et al [46], Bobleter et al [47], Minowa et al [48], Kaybelaml et al [49] and Waldner et al [9] a simplified lumped reaction path scheme for the conversion of small carbohydrates ( C 6 ) in hot compressed water can be deduced. This simplified scheme, presented in Fig.…”

Section: Non-catalytic Gasification In Hot Compressed Watermentioning

confidence: 99%

Catalytic gasification of dry and wet biomass

Rossum¹,

Potic²,

Kersten³

et al. 2009

Catalysis Today

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“…Decomposition of cellulose and glucose is often explained by parallel reaction of gasification and char production [17][18][19]. So far, more attention has been paid to the gasification, and chemicals production has not been considered so much.…”

Section: Biomassmentioning

confidence: 99%

Production of Chemicals in Supercritical Water

Matsumura

Yong

2014

Biofuels and Biorefineries

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Supercritical water (SCW) is expected to be a green solvent for dissolving substances, for chemical synthesis, or for chemical reactions, and thus various study has been carried out. Production of chemicals has been found possible in SCW. This chapter reviews the chemical production in terms of feedstocks and reactions. The feedstocks can include biomass (cellulose, hemicellulose and lignin), plastics, other wastes (e.g., tire, rubber), inorganics and waste water. The reactions include SCW gasification (where hydrolysis and pyrolysis take important roles), SCW oxidation, depolymerization, precipitation, hydrothermal synthesis, other organic reactions for synthesis of chemicals. In these reactions, roles of H 2 O are: (1) Reactant/product (hydrolysis, hydration, hydrogen source and freeradical chemistry) or catalyst (Acid/base catalyst precursor and catalyst in the transition state); (2) Intermolecular interactions in high temperature water: Solvation effects (effects of preferential solvation, hydrophobicity and solvent dynamics) and density inhomogeneity effects (ions, organic compounds, noble gases and radicals); (3) Medium: Energy transfer, diffusion and solvent cages and phase behavior. However, low selectivity and yield and high production cost are barriers for the commercialization of production of chemicals in SCW.

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Decomposition of Cellulose and Glucose in Hot-Compressed Water under Catalyst-Free Conditions.

Cited by 126 publications

References 7 publications

Characterization and Catalytic Properties of the Ni/Al2O3 Catalysts for Aqueous-phase Reforming of Glucose

Characterization and Catalytic Properties of the Ni/Al2O3 Catalysts for Aqueous-phase Reforming of Glucose

Catalytic gasification of dry and wet biomass

Production of Chemicals in Supercritical Water

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