Effective catalytic conversion of cellulose into high yields of methyl glucosides over sulfonated carbon based catalyst

Dora, Sambha; Bhaskar, Thallada; Singh, Rawel; Naik, Desavath V.; Adhikari, Dilip K.

doi:10.1016/j.biortech.2012.06.036

Cited by 90 publications

(41 citation statements)

References 19 publications

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“…The recyclability andr eusability after five catalytic cycles is also mentioned. [108] Carbon and carbon-silica catalysts containing SO 3 Hg roups (chemical activationw ith ptoluenesulfonic acid) have also been studied by Valente et al [109] The effect of reaction time and the acid/organicp recursor ratio are also mentioned in this study,a nd the highest yield of ethyl levulinate (70 %) is achieved after ar eactiont ime of 4h.H eteropolyacids have also been reported as efficient catalysts for alkyl levulinates directly from cellulose. Rataboul [110] reports the production of methyl levulinate in supercritical methanol/water with yields closeto20%.T he Tominaga group reports the direct production of methyl levulinate in the presenceo fL ewis/Brønsted acid mixtures.…”

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confidence: 85%

Levulinic Acid Biorefineries: New Challenges for Efficient Utilization of Biomass

2016

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Levulinic acid is a sustainable platform molecule that can be upgraded to valuable chemicals and fuel additives. This article focuses on the catalytic upgrading of levulinic acid into various chemicals such as levulinate esters, δ-aminolevulinic acid, succinic acid, diphenolic acid, γ-valerolactone, and γ-valerolactone derivatives such valeric esters, 5-nonanone, α-methylene-γ valerolactone, and other various molecular-weight alkanes (C9 and C18-C27 olefins).

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confidence: 85%

Levulinic Acid Biorefineries: New Challenges for Efficient Utilization of Biomass

2016

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“…Wang et al reported that a sulfonated carbon prepared from lignin afforded 62% yield of methyl glucosides with 90% conversion of crystalline cellulose [105]. A bio-char treated by fuming sulfuric acid converted microcrystalline cellulose to methyl glucosides in 92% yield at 548 K, but the activity decreased during recycle tests [106].…”

Section: Methodsmentioning

confidence: 99%

Catalytic transformation of cellulose into platform chemicals

Yabushita

Kobayashi

Fukuoka

2014

Applied Catalysis B: Environmental

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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“…After the first reaction, the catalyst decreased remarkably compared with fresh catalyst, with the total acid content decreased to 0.17 mmol/g. The decrease in catalyst acid was relatively small after several recycling reactions (0.08 mmol/g); nevertheless, the acidic groups on the surface decayed as the reaction progressed (Dora et al 2012). This effect may explain the catalyst deactivation.…”

Section: Stability Of Catalystmentioning

confidence: 95%

Preparation of Core-Shell Structure Magnetic Carbon-Based Solid Acid and its Catalytic Performance on Hemicellulose in Corncobs

Zhang

Tan

et al. 2016

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Solid acid catalysts show good catalytic depolymerization behavior for lignocellulose. A stable core-shell structured magnetic solid acid catalyst (MSAC), Fe3O4/C-SO3H, was prepared from glucose, concentrated sulfuric acid, and modified magnetic particles of Fe3O4, which was used as the core. The effects of the carbonization and sulfonation processes on the activity of the catalyst were investigated. The results showed that preparation conditions had great influence on the quantity of the acidic groups (sulfonic, carboxyl, and hydroxyl groups) and the stability of magnetic catalysts. The best preparation conditions for MSAC were 3 h of carbonization time, 450 °C as the carbonization temperature, 9 h of sulfonation time, and 90 °C as the sulfonation temperature. Its surface topography, functional group, chemical composition, and magnetic properties were characterized by analysis instrument. Furthermore, the catalyst was stably dispersed in the reaction system, quickly separated from the reaction system using an external field, and reused many times; 44.3% of xylose yield was obtained at 160 °C for 16 h. The catalyst was used repeatedly more than 3 times, and the recovery over 89%. The depolymerization of corncobs was achieved by magnetic catalyst, representing the depolymerization characteristics of real lignocellulose. This data can be used as a reference for the subsequent use of biomass resource.

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Effective catalytic conversion of cellulose into high yields of methyl glucosides over sulfonated carbon based catalyst

Cited by 90 publications

References 19 publications

Levulinic Acid Biorefineries: New Challenges for Efficient Utilization of Biomass

Levulinic Acid Biorefineries: New Challenges for Efficient Utilization of Biomass

Catalytic transformation of cellulose into platform chemicals

Preparation of Core-Shell Structure Magnetic Carbon-Based Solid Acid and its Catalytic Performance on Hemicellulose in Corncobs

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