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
Bifunctional Porous Polymers Bearing Boronic and Sulfonic Acids for Hydrolysis of Cellulose
Qiang Yang,Xuejun Pan +1 more
TL;DR: In this article, a facile strategy is reported to synthesize bifunctional porous polymers bearing boronic and sulfonic acids as a new type of cellulase-mimetic solid acids for cellulose hydrolysis in water.
Journal ArticleDOI
An improved kinetic model for cellulose hydrolysis to 5-hydroxymethylfurfural using the solid SO42−/Ti-MCM-41 catalyst
TL;DR: In this article, the authors proposed a mechanism model for the heterogeneous catalytic cellulose hydrolysis process, which is different from the previous first-order kinetic model, and the results show that the predicted data obtained via the suggested model agree well with the experimental results.
Journal ArticleDOI
First synthesis of poly(furfuryl) alcohol precursor-based porous carbon beads as an efficient adsorbent for volatile organic compounds
Amol Pophali,Kyung-Min Lee,Linxi Zhang,Ya-Chen Chuang,Lars Ehm,Michael Cuiffo,Gary P. Halada,Miriam Rafailovich,Nishith Verma,Taejin Kim +9 more
TL;DR: In this paper, the same authors used 1.0mm sized polymeric beads (PFAB) via suspension polymerization to synthesize porous carbon beads as an efficient adsorbent for gaseous volatile organic compounds (VOCs).
Journal ArticleDOI
Effect of the surface acid sites of tungsten trioxide for highly selective hydrogenation of cellulose to ethylene glycol.
Naixu Li,Ji Zhongxiang,Lingfei Wei,Yu Zheng,Quanhao Shen,Quanhong Ma,Menglu Tan,Mengmeng Zhan,Jiancheng Zhou +8 more
TL;DR: This work studied a facile and template-free hydrothermal route for controlled synthesis of tungsten trioxide in the form of hexagonal nanorod (h-WO3) and monoclinic nanosheet and found it to be more preferential for ethylene glycol (EG) generation.
Journal ArticleDOI
Zeolite-Templated Carbon Catalysts for Adsorption and Hydrolysis of Cellulose-Derived Long-Chain Glucans: Effect of Post-Synthetic Surface Functionalization
Mizuho Yabushita,Mizuho Yabushita,Kota Techikawara,Hirokazu Kobayashi,Atsushi Fukuoka,Alexander Katz +5 more
TL;DR: In this paper, the effect of weak acid site surface density on adsorption and catalytic hydrolysis of long-chain β-glucans, with post-synthetically modified zeolite-templated carbon (ZTC) catalysts, was quantitatively investigated.
References
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Andrea C. Ferrari,John Robertson +1 more
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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.
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The path forward for biofuels and biomaterials
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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.