Conversion of Cellulose to Lactic Acid by Using ZrO2–Al2O3 Catalysts

Wattanapaphawong, Panya; Sato, Osamu; Sato, Koichi; Mimura, Naoki; Reubroycharoen, Prasert; Yamaguchi, Aritomo

doi:10.3390/catal7070221

Cited by 28 publications

(14 citation statements)

References 35 publications

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“…The remarkable catalytic activity of ZRO-7 was due to the large amount of base and acid sites on the ZRO-7 catalyst. Following this work, the 10%ZrO 2 -Al 2 O 3 catalyst synthesized by Wattanapaphawong et al was used for the production of lactic acid from cellulose, leading to 25.3% lactic acid yield at 199.85°C for 6 h in aqueous solution ( Table 7, entry 5), which was superior to ZRO-7 [362]. Compared to pure ZrO 2 , the ZrO 2 -Al 2 O 3 catalysts contained more Lewis acid sites and fewer base sites.…”

Section: Levulinic Acid (La)mentioning

confidence: 99%

Chemocatalytic Conversion of Cellulose into Key Platform Chemicals

Liu

et al. 2018

International Journal of Polymer Science

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Chemocatalytic transformation of lignocellulosic biomass to value-added chemicals has attracted global interest in order to build up sustainable societies. Cellulose, the first most abundant constituent of lignocellulosic biomass, has received extensive attention for its comprehensive utilization of resource, such as its catalytic conversion into high value-added chemicals and fuels (e.g., HMF, DMF, and isosorbide). However, the low reactivity of cellulose has prevented its use in chemical industry due to stable chemical structure and poor solubility in common solvents over the cellulose. Recently, homogeneous or heterogeneous catalysis for the conversion of cellulose has been expected to overcome this issue, because various types of pretreatment and homogeneous or heterogeneous catalysts can be designed and applied in a wide range of reaction conditions. In this review, we show the present situation and perspective of homogeneous or heterogeneous catalysis for the direct conversion of cellulose into useful platform chemicals.

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Section: Levulinic Acid (La)mentioning

confidence: 99%

Chemocatalytic Conversion of Cellulose into Key Platform Chemicals

Liu

et al. 2018

International Journal of Polymer Science

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“…However, ZrO 2 -Al 2 O 3 catalysts bearing more Lewis acid sites and far fewer base sites compared to ZrO 2 exhibit a higher LA yield. is suggests that Lewis acid sites played a more important role in producing LA than base sites [75].…”

Section: Cellulose To Lamentioning

confidence: 99%

“…However, an environmental-friendly method for the production of LA from hemicellulosic biomass in the aqueous catalytic process presents a promising way to transform hemicellulosic biomass. In a similar manner, Wattanapaphawong et al studied the ZrO 2 -based catalysts ( Table 2, Entry 10-11) to produce LA from cellulose directly, giving acceptable yield [74,75]. However, ZrO 2 -Al 2 O 3 catalysts bearing more Lewis acid sites and far fewer base sites compared to ZrO 2 exhibit a higher LA yield.…”

Section: Cellulose To Lamentioning

confidence: 99%

Chemocatalytic Production of Lactates from Biomass-Derived Sugars

Zhang

et al. 2018

International Journal of Chemical Engineering

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In recent decades, a great deal of attention has been paid to the exploration of alternative and sustainable resources to produce biofuels and valuable chemicals, with aims of reducing the reliance on depleting confined fossil resources and alleviating serious economic and environmental issues. In line with this, lignocellulosic biomass-derived lactic acid (LA, 2-hydroxypropanoic acid), to be identified as an important biomass-derived commodity chemical, has found wide applications in food, pharmaceuticals, and cosmetics. In spite of the current fermentation of saccharides to produce lactic acid, sustainability issues such as environmental impact and high cost derived from the relative separation and purification process will be growing with the increasing demands of necessary orders. Alternatively, chemocatalytic approaches to manufacture LA from biomass (i.e., inedible cellulose) have attracted extensive attention, which may give rise to higher productivity and lower costs related to product work-up. is work presents a review of the state-of-the-art for the production of LA using homogeneous, heterogeneous acid, and base catalysts, from sugars and real biomass like rice straw, respectively. Furthermore, the corresponding bio-based esters lactate which could serve as green solvents, produced from biomass with chemocatalysis, is also discussed. Advantages of heterogeneous catalytic reaction systems are emphasized. Guidance is suggested to improve the catalytic performance of heterogeneous catalysts for the production of LA.

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“…Other Zn-, Zr-, and Nb-based Lewis acids have been recently reported to catalyze the conversion of cellulose and related carbohydrates to lactic acid in water [70][71][72][73][74][75][76][77] . Nevertheless, the efficiencies of these catalytic systems were generally not high (lactic acid yield < 35%) under hydrothermal conditions (453-573 K).…”

Section: Lewis Acidsmentioning

confidence: 99%

Catalytic conversion of cellulose-based biomass and glycerol to lactic acid

Deng

et al. 2019

Journal of Energy Chemistry

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Conversion of Cellulose to Lactic Acid by Using ZrO2–Al2O3 Catalysts

Cited by 28 publications

References 35 publications

Chemocatalytic Conversion of Cellulose into Key Platform Chemicals

Chemocatalytic Conversion of Cellulose into Key Platform Chemicals

Chemocatalytic Production of Lactates from Biomass-Derived Sugars

Catalytic conversion of cellulose-based biomass and glycerol to lactic acid

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