Water‐Tolerant Mesoporous‐Carbon‐Supported Ruthenium Catalysts for the Hydrolysis of Cellulose to Glucose

Kobayashi, Hirokazu; Komanoya, Tasuku; Hara, Kenji; Fukuoka, Atsushi

doi:10.1002/cssc.200900296

Cited by 225 publications

(134 citation statements)

References 28 publications

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“…Table 2 As mentioned above, cellulose is dissolved in ILs and shows higher reactivity than that in Supported metal catalysts have also been used for the hydrolysis of cellulose. We found that 2 wt% Ru/CMK-3 hydrolyzed cellulose (conversion 56%) to glucose (24% yield, 43% selectivity) in water (entry 31), and the TOF for the production of glucose was 18 h -1 per the number of bulk Ru atoms [96,97]. The yield of glucose was raised up to 31% by increasing the Ru loading to 10 wt%.…”

Section: Hydrolysis Of Cellulose To Glucosementioning

confidence: 99%

“…Intriguingly, mesoporous carbons also catalyzed the hydrolysis of cellulose to glucose even in the absence of strong acidity (entries 32,33) [73,96,97]. Katz et al reported that even silanols with very weak acidity (pK a = 7) were able to hydrolyze cellulose by inducing stressful conformations by forming ether bonds between silica and cellulose [98].…”

Section: Hydrolysis Of Cellulose To Glucosementioning

confidence: 99%

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Catalytic transformation of cellulose into platform chemicals

Yabushita

Kobayashi

Fukuoka

2014

Applied Catalysis B: Environmental

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267

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Conversion of biomass to renewable and valuable chemicals has attracted global interest in order to build up sustainable societies. Cellulose is the most abundant and non-food biomass; however, the low reactivity of cellulose has prevented its use in chemical industry except for the paper manufacturing. The heterogeneous catalysis for the conversion of cellulose has been expected to overcome this issue, because various types of heterogeneous catalysts can be designed and applied in a wide range of reaction conditions. Furthermore, solid catalysts are easily recovered and reused. In this review article, we show the present situation and perspective of heterogeneous catalysis for the transformation of cellulose into useful platform 2 chemicals.

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Section: Hydrolysis Of Cellulose To Glucosementioning

confidence: 99%

Section: Hydrolysis Of Cellulose To Glucosementioning

confidence: 99%

Catalytic transformation of cellulose into platform chemicals

Yabushita

Kobayashi

Fukuoka

2014

Applied Catalysis B: Environmental

Self Cite

267

142

View full text Add to dashboard Cite

show abstract

“…Since we found that supported metal catalysts accelerate the hydrolysis step in the 65 hydrolytic hydrogenation of cellulose, we retried the hydrolysis of cellulose by using this type of catalysts. 58 In our study, we used 4-day-milled cellulose (Avicel, Merck) as the substrate. To achieve both the high reaction rate and the inhibition of glucose decomposition, rapid heating and cooling conditions were 70 utilised, 23b i.e.…”

Section: Hydrolysis Of Cellulose Supported Metal Catalysts For the Hymentioning

confidence: 99%

Conversion of lignocellulose into renewable chemicals by heterogeneous catalysis

Kobayashi

Ohta

Fukuoka

2012

Catal. Sci. Technol.

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191

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Conversion of lignocellulose into renewable chemicals and fuels has received great attention for building up the sustainable societies. However, the utilisation of lignocellulose in the chemical industry has almost been limited for paper manufacturing because of the complicated chemical structure and persistent property of lignocellulose. Heterogeneous catalysis has the potential to selectively convert lignocellulosic biomasses into various useful chemicals, and this methodology has rapidly progressed in the last several 10 years. In this perspective article, we outline our recent approaches on the heterogeneous catalysis for this challenging subject with related literatures. Lignocellulose as a renewable resourceConversion of biomass to renewable fuels and chemicals has attracted significant attention as a key technology for the 15 sustainable societies.1 Lignocellulose is the most abundant biomass resource, produced together with sugars and starch from carbon dioxide and water via the photosynthesis using sunlight and successive metabolism in plants. Lignocellulose is not digestible for human beings, which is an advantage over sugars 20 and starch since the use of edible carbohydrates for the synthesis of bioethanol fuel has competed with the food production, giving us a consensus that we should use non-food biomass as a feedstock to fuels and chemicals. Therefore, lignocellulose is one of the most attractive biomass resources in nature. 25Lignocellulose in woods consists of cellulose (40-50%), hemicellulose (20-40%) and lignin (20-30%).2 Cellulose is a water-insoluble polymer composed of glucose linked by -1,4-glycosidic bonds ( Fig. 1(a)) and forms robust crystal structures with inter-and intra-molecular hydrogen bonds, possessing high 30 chemical stability. 3 Hemicellulose is also a polysaccharide, but

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“…Table 1 summarises the results of the transfer hydrogenation of cellulose by various supported Ru catalysts using 2-propanol as a source of hydrogen without bases. ‡ Among the catalysts, the Ru/carbons [Ru/AC(N), Ru/C-Q10 45 and Ru/CMK-3] gave the highest yields of sugar alcohols (entries 3,8,9). For example, the yields in the reaction using Ru/C-Q10 were 37% sorbitol and 9.0% mannitol for a total of 46% (0.87 mmol).…”

Section: Conversionmentioning

confidence: 99%