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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Book ChapterDOI
Bio-based chemicals from biorefining: carbohydrate conversion and utilisation
Keith A. Wilson,Adam F. Lee +1 more
TL;DR: This chapter addresses the challenges associated with carbohydrate utilisation as a sustainable feedstock, highlighting innovations in catalyst and process design that are needed to deliver high-value chemicals from biomass-derived building blocks.
Journal ArticleDOI
Fractional distribution of graphene oxide and its potential as an efficient and reusable solid catalyst for esterification reactions
TL;DR: In this article, GrO5000 was found to be a highly efficient and reusable solid catalyst for the esterification of various carboxylic acids with a variety of alcohols to furnish corresponding esters in high to excellent yields.
Journal ArticleDOI
Fabrication of weak-acid functionalized mesoporous carbon solid acid from tannic acid and its use for saccharification of cellulose
TL;DR: A series of mesoporous carbon-based solid acid catalysts were prepared using tannic acid (C76H52O46), a polyphenol compound, as starting carbon materials and SBA-15 as silica template.
Journal ArticleDOI
Effect of Cs content on CsxH5−xPMo10V2O40 properties and oxidative catalytic activity on starch oxidation by H2O2
TL;DR: In this paper, a series of cesium substituted molybovanadophosphric acids, CsxH5−xPMo10V2O40 (x = 0, 0.5, 1.0, 1, 5, 4.5 and 5.0), were synthesized by controlling the ratio of Cs+ to PMo10 V2O405−.
Journal ArticleDOI
Oxidative Hydrolysis of Cellobiose to Glucose
Weiling Deng,Rodrigo Lobo,Worajit Setthapun,Worajit Setthapun,Steven T. Christensen,Jeffrey W. Elam,Christopher L. Marshall +6 more
TL;DR: In this article, a model for cellulose breakdown was used to investigate glycosidic bond cleavage, and the selectivity from cellobiose to glucose was very low on porous γ-Al2O3 supported catalysts, even lower than without a catalyst.
References
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