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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Journal ArticleDOI
Facile Vacuum Annealing-Induced Modification of TiO2 with an Enhanced Photocatalytic Performance.
Zhenpeng Cui,Min Zhao,Xueyan Que,Jingjing Wang,Yang Xu,Mohamed Nawfal Ghazzal,Christophe Colbeau-Justin,Duoqiang Pan,Wangsuo Wu +8 more
TL;DR: In this paper, the photocatalytic performance enhancement of hydrothermally prepared TiO2 was achieved by facile vacuum annealing treatment, which transformed ethanol adsorbed on the surface of TiO 2 into carbon-related species accompanied by the formation of surface oxygen vacancies (Vo).
Journal ArticleDOI
Efficient Hydrolytic Breakage of β-1,4-Glycosidic Bond Catalyzed by a Difunctional Magnetic Nanocatalyst
TL;DR: In this paper, a difunctional magnetic nanocatalyst (DMNC) was used to catalyse the breakage of β-1,4-glycosidic bonds.
Journal Article
Adsorption Behavior of Acid Bordeaux B from Aqueous Solution onto Waste Biomass of Enteromorpha prolifera
Yingnian Li,F Meng,Y Zhou +2 more
TL;DR: In this article, the acid bordeaux B (ABB) absorption of E. prolifera powder was investigated and the dye adsorption onto adsorbent was confirmed by Fourier transform infrared spectroscopy (FTIR).
Book ChapterDOI
Polyalkylglycosides: sustainable production of nonionic biosurfactants from lignocellulosic biomass
TL;DR: In this article , the use of various catalytic strategies (e.g., heteropoly acids, H2SO4, and Amberlyst 15) employed for the production of polyalkyl glycosides from biomass-derived cellulose and hemicellulose in alcohol and water as solvents is discussed.
Book ChapterDOI
Heteroatom modified carbon nanomaterials as metal-free catalysts for lignocellulosic carbohydrate valorization
TL;DR: In this article, the use of functionalized carbon nanomaterials as a metal-free catalyst for cellulose conversion to carbohydrates and upgrading of carbohydrates to highly valued chemicals, such as 5-(hydroxymethyl)furfural, 2,5-furandicarboxylic acid, 2.5-diformylfuran, etc.
References
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Andrea C. Ferrari,John Robertson +1 more
TL;DR: In this paper, a model and theoretical understanding of the Raman spectra in disordered and amorphous carbon is given, and the nature of the G and D vibration modes in graphite is analyzed in terms of the resonant excitation of \ensuremath{\pi} states and the long-range polarizability of the long range bonding.
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Journal ArticleDOI
The path forward for biofuels and biomaterials
Arthur J. Ragauskas,Charlotte K. Williams,Brian H. Davison,George J. P. Britovsek,John Cairney,Charles A. Eckert,William J. Frederick,Jason P. Hallett,David J. Leak,Charles L. Liotta,Jonathan R. Mielenz,Richard J. Murphy,Richard H. Templer,Timothy J. Tschaplinski +13 more
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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.