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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Synthesis of Carbon‐based Solid Acid Microspheres and Their Application to the Production of Biodiesel
TL;DR: A novel route for the synthesis of carbon-based solid acids is presented, which circumvents gas-phase pyrolysis, thereby avoiding the emission of harmful gases, and yields a solid acid comprising spherical particles of uniform, micrometer-regime size.
Journal ArticleDOI
Recent Developments in the Catalytic Conversion of Cellulose into Valuable Chemicals
TL;DR: In this paper, the recalcitrant structure of cellulose is discussed and non-catalytic hydrolysis by hot-compressed water and catalytic hydroxylation using solid acids are then considered.
Journal ArticleDOI
Fabrication of sulfonated carbon catalyst from biomass waste and its use for glycerol esterification
TL;DR: Sulfonated carbon catalysts were obtained by sulfonation of carbonized catkins from willow under different sulfonated conditions as discussed by the authors, which exhibited high acid capacity, good thermal stability and better catalytic activity for glycerol esterification.
Journal ArticleDOI
Production of Renewable Hexanols from Mechanocatalytically Depolymerized Cellulose by Using Ir‐ReOx/SiO2 catalyst
TL;DR: The role of n-decane was to extract hexanols and to suppress over-hydrogenolysis ofhexanols to n-hexane and the use of sufficient n- decane were very crucial for the production of hexanol.
Journal ArticleDOI
Metal oxide nanoparticles deposited onto carbon-coated halloysite nanotubes
TL;DR: In this paper, the authors reported the synthesis of carbon-coated HNTs (CCH) via the carbonization of sucrose-covered HNT in the presence of sulfuric acid, and metal oxide (MO) nanoparticles were subsequently deposited on the surface of the CCH to produce MO/CCH nanocomposites.
References
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Andrea C. Ferrari,John Robertson +1 more
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Spectrometric identification of organic compounds
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Journal ArticleDOI
The path forward for biofuels and biomaterials
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Journal ArticleDOI
Toward an aggregated understanding of enzymatic hydrolysis of cellulose: noncomplexed cellulase systems.
TL;DR: It is suggested that it is timely to revisit and reinvigorate functional modeling of cellulose hydrolysis and that this would be highly beneficial if not necessary in order to bring to bear the large volume of information available on cellulase components on the primary applications that motivate interest in the subject.
Journal ArticleDOI
Bio-ethanol--the fuel of tomorrow from the residues of today.
TL;DR: This review gives an overview of the new technologies required and the advances achieved in recent years to bring lignocellulosic ethanol towards industrial production.