Product distribution from the fast pyrolysis of hemicellulose.
Summary of "Product distribution from the fast pyrolysis of hemicellulose."
Hemicellulose is one of the major constituents of biomass. Surprisingly, only very limited information regarding its product distribution under fast pyrolysis conditions is available in the literature. In the present study, a combination of several analytical techniques, including micro-pyrolyzer-GC-MS/FID, gas analysis, and capillary electrophoresis, were used to study the primary pyrolysis product distribution of hemicelluloses extracted and purified from switchgrass. A total of 16 products were identified and quantified, which accounted for 85 % of the overall mass balance. The pyrolysis behavior of hemicellulose was found to be considerably different than cellulose and was explained on the basis of a proposed mechanism for glycosidic bond cleavage. Further, the effect of minerals and temperature was investigated. The study provides insight into the fast pyrolysis behavior of hemicellulose and provides a basis for developing models that can predict bio-oil composition resulting from overall biomass fast pyrolysis.
Affiliation
Department of Chemical and Biological Engineering, Iowa State University, Ames, IA 50011-2230 (USA), Fax: (+1) 515 294-2689.
Journal Details
This article was published in the following journal.
Name: ChemSusChem
ISSN: 1864-564X
Pages: 636-43
Links
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/21548106
- DOI: http://dx.doi.org/10.1002/cssc.201000425
Medical and Biotech [MESH] Definitions
Wood
A product of hard secondary xylem composed of CELLULOSE, hemicellulose, and LIGNANS, that is under the bark of trees and shrubs. It is used in construction and as a source of CHARCOAL and many other products.
Binomial Distribution
The probability distribution associated with two mutually exclusive outcomes; used to model cumulative incidence rates and prevalence rates. The Bernoulli distribution is a special case of binomial distribution.
Drug Recalls
Removal of a drug from the market due to a problem occurring in the manufacture or distribution of the product.
Product Packaging
Form in which product is processed or wrapped and labeled. PRODUCT LABELING is also available.
Poisson Distribution
A distribution function used to describe the occurrence of rare events or to describe the sampling distribution of isolated counts in a continuum of time or space.
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