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
More filters
Journal ArticleDOI
Surface characterization of sulfated zirconia and its catalytic activity for epoxidation reaction of castor oil
TL;DR: In this article, the solid acid catalysts SO42−/ZrO2 were prepared by impregnation technique at different calcination temperatures and surface characterizations were carried out by using scanning electron microsco...
Journal ArticleDOI
Gel-Type and Macroporous Cross-Linked Copolymers Functionalized with Acid Groups for the Hydrolysis of Wheat Straw Pretreated with an Ionic Liquid
Giulia Lavarda,Silvia Morales-delaRosa,Paolo Centomo,Jose M. Campos-Martin,Marco Zecca,José Luis García Fierro +5 more
TL;DR: In this paper, sulfonated cross-linked copolymers functionalized with hydroxyl and carboxylic groups have been synthesized for catalytic hydrolysis of wheat straw pretreated in 1-ethyl-3-methylimidazolium acetate to obtain sugars.
Journal ArticleDOI
Saccharification of cellulosic biomass using sulfonated mesoporous carbon‐based catalysts
TL;DR: In this paper, a series of sulfonated mesoporous carbon-based catalysts with intact silica template (MC) were prepared through incomplete carbonization of sucrose followed by sulfonation.
Journal ArticleDOI
Cross-linked chitosan supporting polyoxometalates catalyst with adjustable redox property for H2O2-based oxidation reactions
TL;DR: In this article, a series of polyoxometalates-based chitosan (CS) hybrids were prepared by the anion-exchange of a newly task-specific designed cross-linked CS ionic polymer with a Keggin H 3 PW 12 O 40.
Journal ArticleDOI
Sulfonated magnetic carbon nanoparticles from eucalyptus oil as a green and sustainable catalyst for converting fructose to 5-HMF
Giang T.T. Le,Kantapong Arunaditya,Jamekorn Panichpol,Tanapat Rodruangnon,Sutarat Thongratkaew,Kawisa Chaipojjana,Kajornsak Faungnawakij,Tawatchai Charinpanitkul +7 more
TL;DR: In this article, sulfonated magnetic carbon nanoparticles (SMCNs) were synthesized from eucalyptus oil via co-pyrolysis with ferrocene and sulfonation by H2SO4.
References
More filters
Journal ArticleDOI
Interpretation of Raman spectra of disordered and amorphous carbon
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.
Book
Spectrometric identification of organic compounds
TL;DR: In this paper, a sequence of procedures for identifying an unknown organic liquid using mass, NMR, IR, and UV spectroscopy is presented, along with specific examples of unknowns and their spectra.
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
TL;DR: The integration of agroenergy crops and biorefinery manufacturing technologies offers the potential for the development of sustainable biopower and biomaterials that will lead to a new manufacturing paradigm.
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.