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- Kwak, Ja Hun
- Molecular Catalysis Lab.
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Effects of crystallinity on dilute acid hydrolysis of cellulose by cellulose ball-milling study
- Alternative Title
- Effects of crystallinity on dilute acid hydrolysis of cellulose by cellulose ball-milling study
- Author(s)
- Zhao, Haibo, Kwak, Jahun, Wang, Yong, Franz, James A., White, John M., Holladay, Johnathan E.
- Issued Date
- 2006-03
- Citation
- ENERGY & FUELS, v.20, no.2, pp.807 - 811
- Abstract
- The dilute acid (0.05 M H2SO4) hydrolysis at 175 degrees C of samples comprised of varying fractions of crystalline (alpha-form) and amorphous cellulose was studied. The amorphous content, based on XRD and CP/MAS NMR, and the product (glucose) yield, based on HPLC, increased by as much as a factor of 3 upon ball milling. These results are interpreted in terms of a model involving mechanical disruption of crystallinity by breaking hydrogen bonds in alpha-cellulose, opening up the structure, and making more beta-1,4 glycosidic bonds readily accessible to the dilute acid. However, in parallel with hydrolysis to form liquid-phase products, there are reactions of amorphous cellulose that form solid degradation products
- Publisher
- AMER CHEMICAL SOC
- ISSN
- 0887-0624
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