Contributions of hemicellulose, cellulose and lignin to the mass and the porous properties of chars and steam activated carbons from various lignocellulosic precursors

Tipo de material: Texto

TextoSeries ; Bioresource Technology, 100(1), p.292-298, 2009Trabajos contenidos:

Cagnon, B
Py, X
Guillot, A
Stoeckli, F
Chambat, G

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Resumen: In this study, contributions of hemicellulose, cellulose and lignin to the mass and the porous properties of chars and activated carbons from various lignocellulosic materials were studied. A predictive calculation was established using the experimental results obtained for the three components separately to evaluate the carbonization and activation yields and their respective contributions to the chars and to the subsequent activated carbons of various precursors in term of weight fraction. These equations were validated. The results showed that lignin can be considering as being the major contributor of all chars and activated carbons. Besides, the evolution of the mean pore size versus the specific porous volume showed that each component contributes to the porosity of chars and activated carbons whatever is its weight contribution.

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Previous	B-11701 Methodical study of the chemical activation of Kraft lignin with KOH and NaOH	B-11702 Preparation and characterization of activated carbons from eucalyptus kraft lignin	B-11703 Lignin-based carbon films and controllable pore size and properties	B-11704 Contributions of hemicellulose, cellulose and lignin to the mass and the porous properties of chars and steam activated carbons from various lignocellulosic precursors	B-11705 Characterization of carbons derived from cellulose and lignin and their oxidative behavior	B-11706 Production, characterization and application of activated carbon from brewer's spent grain lignin	B-11707 Activated carbons from lignin: kinetic modeling of the pyrolysis of Kraft lignin activated with phosphoric acid	Next

In this study, contributions of hemicellulose, cellulose and lignin to the mass and the porous properties of chars and activated carbons from various lignocellulosic materials were studied. A predictive calculation was established using the experimental results obtained for the three components separately to evaluate the carbonization and activation yields and their respective contributions to the chars and to the subsequent activated carbons of various precursors in term of weight fraction. These equations were validated. The results showed that lignin can be considering as being the major contributor of all chars and activated carbons. Besides, the evolution of the mean pore size versus the specific porous volume showed that each component contributes to the porosity of chars and activated carbons whatever is its weight contribution.

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