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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Comparative study of catalytic activities among transition metal-doped IrO 2 nanoparticles
Hangil Lee,Joo Yeon Kim,Si Young Lee,Si Young Lee,Jung A. Hong,Namdong Kim,Jaeyoon Baik,Yun Jeong Hwang,Yun Jeong Hwang +8 more
TL;DR: Vacancy defects induced by doping in TM-IrO2 NPs are proposed to contribute to enhance the oxidation activities.
Journal ArticleDOI
Sorbitol dehydration into isosorbide over a cellulose-derived solid acid catalyst
TL;DR: In this article, a cellulose-derived solid acid catalyst (CCS) was used to develop a sustainable process for isosorbide production from sorbitol, and the results of FT-IR and pyridine adsorption revealed that most of the acid sites contained in CCS catalyst were assigned as strong Bronsted sites.
Journal ArticleDOI
Glucose production from hydrolysis of cellulose over a novel silica catalyst under hydrothermal conditions.
TL;DR: The results of temperature-programmed desorption of ammonia (NH3-TPD) and textural properties indicated that the synergistic effect between strong acidity and a suitable pore diameter of the silica catalyst may be responsible for its high activity.
Journal ArticleDOI
Efficient hydrolyzation of cellulose in ionic liquid by novel sulfonated biomass-based catalysts
TL;DR: A green and effective approach for comprehensive hydrolyzation of cellulose has been described in this paper, where carbon-based solid acids were successfully prepared using various biomass (glucose, microcrystalline cellulose, bamboo, and rice husk) and used to catalyze cellulose hydrolysis.
Journal ArticleDOI
Hydrolysis of Cellobiose over Selective and Stable Sulfonated Activated Carbon Catalysts
Guo Shiou Foo,Adam H. Van Pelt,Daniel Krötschel,Benjamin F. Sauk,Allyson K. Rogers,Allyson K. Rogers,Cayla R. Jolly,Matthew M. Yung,Carsten Sievers +8 more
TL;DR: In this paper, the van der Waals forces dominate the interaction between carbohydrates and the surface of catalysts and all catalysts are stable during the hydrolysis of cellobiose under flow conditions.
References
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