Adsorption-enhanced hydrolysis of glucan oligomers into glucose over sulfonated three-dimensionally ordered mesoporous carbon catalysts

Paul Dornath, Stephen Ruzycky, Shintaro Pang, Lili He, Paul J Dauenhauer, Wei Fan

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The hydrolysis of cellulose and β(1 → 4) oligosaccharides on carbon catalysts is a promising approach for the selective production of glucose from cellulose and its derivatives. In this study, a structure-property relationship was developed for the hydrolysis of water soluble glucan oligomers over three dimensionally ordered mesoporous (3DOm) carbon with sulfonic acid groups. It was found that the number of sulfonic acid groups on 3DOm carbon catalysts and their adsorption properties need to be optimized to maximize the hydrolysis of water soluble glucan oligomers. The adsorption capacity of glucan oligomers on 3DOm carbon increases with their chain length, which can be attributed to two molecular behaviors: (a) long glucan oligomers adsorbed on the carbon surface exhibit a dense packing structure compared with relatively small glucan oligomers; and (b) a part of a glucan oligomer "dangles" off the carbon surface due to its branched structure. It was found that the adsorption enthalpy and entropy increased with increasing the chain length of the glucan oligomers, which favors the hydrolysis reaction to produce glucose over the carbon catalysts.

Original languageEnglish (US)
Pages (from-to)6637-6647
Number of pages11
JournalGreen Chemistry
Volume18
Issue number24
DOIs
StatePublished - Jan 1 2016

Fingerprint

Glucans
Oligomers
Glucose
hydrolysis
Hydrolysis
glucose
Carbon
catalyst
adsorption
Adsorption
Catalysts
carbon
Sulfonic Acids
Chain length
Cellulose
cellulose
Oligosaccharides
Acids
Water
acid

Cite this

Adsorption-enhanced hydrolysis of glucan oligomers into glucose over sulfonated three-dimensionally ordered mesoporous carbon catalysts. / Dornath, Paul; Ruzycky, Stephen; Pang, Shintaro; He, Lili; Dauenhauer, Paul J; Fan, Wei.

In: Green Chemistry, Vol. 18, No. 24, 01.01.2016, p. 6637-6647.

Research output: Contribution to journalArticle

Dornath, Paul ; Ruzycky, Stephen ; Pang, Shintaro ; He, Lili ; Dauenhauer, Paul J ; Fan, Wei. / Adsorption-enhanced hydrolysis of glucan oligomers into glucose over sulfonated three-dimensionally ordered mesoporous carbon catalysts. In: Green Chemistry. 2016 ; Vol. 18, No. 24. pp. 6637-6647.
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