Efficient conversion of microcrystalline cellulose to 1,2-alkanediols over supported Ni catalysts

Wang, Xicheng; Meng, Lingqian; Wu, Feng; Jiang, Yijun; Wang, Lei; Mu, Xindong

doi:10.1039/c2gc15946e

Cited by 122 publications

(85 citation statements)

References 33 publications

(65 reference statements)

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“…In addition, Ni/ZnO and Ni-Cu/ZnO converted cellulose into 1,2-alkanediols such as EG, PG, 1,2-butanediol, and 1,2-hexanediol with good conversion (≥ 89%) in the reuse experiments more than 4 times [132,133]. The catalytic performance of Ni-Cu/ZnO depended on the ratio of Ni and Cu, and the conversion of cellulose increased with increasing the Ni/Cu ratio.…”

Section: Methodsmentioning

confidence: 98%

Catalytic transformation of cellulose into platform chemicals

Yabushita

Kobayashi

Fukuoka

2014

Applied Catalysis B: Environmental

256

141

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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: Methodsmentioning

confidence: 98%

Catalytic transformation of cellulose into platform chemicals

Yabushita

Kobayashi

Fukuoka

2014

Applied Catalysis B: Environmental

256

141

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“…These catalysts include Ni/ZnO [134], Cu/CrO x -Ca(OH) 2 [135], Pt-Sn/Al 2 O 3 [136], Ni-La 2 O 3 [32], Ru/C--NaOH [137], CuO/ZnO/Al 2 O 3 [138], and Ru/NbOPO 4 [139]. With respect to the catalytic performance, they are generally less selective to the EG formation but give remarkably higher yields of 1,2-PG in contrast to the tungstenic catalysts.…”

Section: Catalysts and Reaction Mechanismmentioning

confidence: 99%

“…The overall yield of glycols (including EG, 1,2-PG, and butanediols) reached ca. 70 % [134,141]. The authors proposed that it is the basic sites but not the acidic sites on the support surface play a critical role for the activity and selectivity of the catalysts.…”

Section: Catalysts and Reaction Mechanismmentioning

confidence: 99%

Mechanism and Kinetic Analysis of the Hydrogenolysis of Cellulose to Polyols

Wang

Pang

et al. 2016

Green Chemistry and Sustainable Technology

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The catalytic hydrogenolysis of cellulose to polyols represents an attractive process for biomass conversion to value-added products with a high atom economy. In the past decade, extensive studies have been conducted and promptly accumulated a rich knowledge in this field. In this chapter, we focus on the review of reaction mechanisms and kinetics after a brief description of the catalyst development for this process. In view of the different polyol products, the present review is mainly composed of two parts: cellulose conversion to sugar alcohols and cellulose hydrogenolysis to ethylene glycol and 1,2-propylene glycol. The reaction mechanisms are discussed and summarized to obtain general rules in terms of the specific performance of various catalysts. The reaction kinetics of cellulose hydrogenolysis are analyzed on the basis of the kinetics of the individual reaction steps and their correlations in the whole route covering in detail the reactions of cellulose hydrolysis, sugar hydrogenation, retro-aldol condensation, and sugar condensations. Finally, the prospective for the reaction mechanism and kinetics study of cellulose hydrogenolysis is presented.

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“…These results suggest that the basic anions (CO 3 2 , HCO 3 ) drastically shift the products distribution from sorbitol to by-products. It has been reported that Ni catalysts supported on basic supports convert cellulose to EG and PG [40,41]. The reaction of raw silver grass-1 gave low yields of sugar alcohols, but the amounts of EG and PG were larger than those in the reaction of the pretreated samples (Table 3, entries [14][15][16][17].…”

Section: Influences Of Salts Estimated In Model Reactionsmentioning

confidence: 99%

Production of sugar alcohols from real biomass by supported platinum catalyst

et al. 2014

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The influence of lignin and inorganic salts on the catalytic activity was studied in the hydrolytic hydrogenation of real biomass by a supported Pt catalyst. The direct conversion of raw silver grass by Pt/carbon catalyst under H 2 pressure produced small amounts of sorbitol (2.8 wt%), xylitol (7.3 wt%), and other sugar alcohols. It has been suggested that lignin reduces the reactivity of cellulose, as lignin exists together with cellulose in the biomass and both compounds are insoluble in water.Moreover, even weak bases drastically change the product distribution with more by-products such as EG and PG. Bases enhance the decomposition of sugar intermediates and sorbitol. The removal of lignin and inorganic salts by alkali-explosion and neutralization raises the contents of cellulose and hemicellulose, thus increasing the yields of sorbitol (13 wt%) and xylitol (14 wt%) in the hydrolytic hydrogenation reactions.

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Efficient conversion of microcrystalline cellulose to 1,2-alkanediols over supported Ni catalysts

Cited by 122 publications

References 33 publications

Catalytic transformation of cellulose into platform chemicals

Catalytic transformation of cellulose into platform chemicals

Mechanism and Kinetic Analysis of the Hydrogenolysis of Cellulose to Polyols

Production of sugar alcohols from real biomass by supported platinum catalyst

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