Journal ArticleDOI
Hydrolysis of Cellulose by Amorphous Carbon Bearing SO3H, COOH, and OH Groups
Satoshi Suganuma,Kiyotaka Nakajima,Masaaki Kitano,Daizo Yamaguchi,Hideki Kato,Shigenobu Hayashi,Michikazu Hara +6 more
TLDR
The carbon catalyst can be readily separated from the saccharide solution after reaction for reuse in the reaction without loss of activity, and the catalytic performance of the carbon catalyst is attributed to the ability of the material to adsorb beta-1,4 glucan, which does not adsorb to other solid acids.Abstract:
The hydrolysis of cellulose into saccharides using a range of solid catalysts is investigated for potential application in the environmentally benign saccharification of cellulose. Crystalline pure cellulose is not hydrolyzed by conventional strong solid Bronsted acid catalysts such as niobic acid, H-mordenite, Nafion and Amberlyst-15, whereas amorphous carbon bearing SO 3H, COOH, and OH function as an efficient catalyst for the reaction. The apparent activation energy for the hydrolysis of cellulose into glucose using the carbon catalyst is estimated to be 110 kJ mol (-1), smaller than that for sulfuric acid under optimal conditions (170 kJ mol (-1)). The carbon catalyst can be readily separated from the saccharide solution after reaction for reuse in the reaction without loss of activity. The catalytic performance of the carbon catalyst is attributed to the ability of the material to adsorb beta-1,4 glucan, which does not adsorb to other solid acids.read more
Citations
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Conversion of cellulose to high-yield glucose in water over sulfonated mesoporous carbon fibers with optimized acidity
TL;DR: In this paper, a unique sulfonated mesoporous carbon fiber with optimized acidity prepared by pyrolysis of FeCl3-impregnated wipe fibers followed by acid treatment was reported.
Journal ArticleDOI
Unveiling one-pot scalable fabrication of reusable carboxylated heterogeneous carbon-based catalysts from eucalyptus plant with the assistance of dry ice for selective hydrolysis of eucalyptus biomass
Hassan Idris Abdu,Kamel Eid,Aboubakr M. Abdullah,Zhengang Han,Mohammed Hassan Ibrahim,Duoliang Shan,Jing Chen,Ahmed A. Elzatahry,Xiaoquan Lu,Xiaoquan Lu +9 more
TL;DR: In this paper, a simple approach was developed for tailoring one-pot fabrication of carboxylate heterogeneous catalysts from woody biomass eucalyptus denoted as (ECS) via the ball-milling in the presence of dry ice as an oxidant followed by protonation.
Journal ArticleDOI
Direct thermochemical liquefaction of microcrystalline cellulose by sub- and supercritical organic solvents
TL;DR: In this article, a thermochemical liquefaction of microcrystalline cellulose was carried out using sub-and supercritical solvents in a batch reactor, where the conversion efficiency of dodecane and m-xylene widely used in petrochemical industries was compared to that of methanol and 1,4-dioxane.
Journal ArticleDOI
Hexagonal Boron Nitride for Adsorption of Saccharides
TL;DR: In this article, the authors demonstrated that hexagonal boron nitride (h-BN) adsorbs saccharides in water and showed that the adsorption is mainly driven by dispersion force occurring between CH groups and π electrons on the basal plane of h-BN.
Journal ArticleDOI
Esterification of lauric and oleic acids with methanol over oxidized and sulfonated activated carbon catalyst
Chenwei Wang,Xia Gui,Zhi Yun +2 more
TL;DR: In this paper, a new activated carbon catalyst with relatively high density of the SO3H group was synthesized by HNO3 oxidation followed by sulfonation with H2SO4.
References
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