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The origin of molecular mobility during biomass pyrolysis as revealed by in situ (1)H NMR spectroscopy.

Identifieur interne : 000060 ( PubMed/Checkpoint ); précédent : 000059; suivant : 000061

The origin of molecular mobility during biomass pyrolysis as revealed by in situ (1)H NMR spectroscopy.

Auteurs : Anthony Dufour (génie des procédés) [France] ; Miguel Castro-Diaz ; Nicolas Brosse ; Mohamed Bouroukba ; Colin Snape

Source :

RBID : pubmed:22573541

Descripteurs français

English descriptors

Abstract

The thermochemical conversion of lignocellulosic biomass feedstocks offers an important potential route for the production of biofuels and value-added green chemicals. Pyrolysis is the first phenomenon involved in all biomass thermochemical processes and it controls to a major extent the product composition. The composition of pyrolysis products can be affected markedly by the extent of softening that occurs. In spite of extensive work on biomass pyrolysis, the development of fluidity during the pyrolysis of biomass has not been quantified. This paper provides the first experimental investigation of proton mobility during biomass pyrolysis by in situ (1)H NMR spectroscopy. The origin of mobility is discussed for cellulose, lignin and xylan. The effect of minerals on cellulose mobility is also investigated. Interactions between polymers in the native biomass network are revealed by in situ (1)H NMR analysis.

DOI: 10.1002/cssc.201100442
PubMed: 22573541


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pubmed:22573541

Le document en format XML

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<div type="abstract" xml:lang="en">The thermochemical conversion of lignocellulosic biomass feedstocks offers an important potential route for the production of biofuels and value-added green chemicals. Pyrolysis is the first phenomenon involved in all biomass thermochemical processes and it controls to a major extent the product composition. The composition of pyrolysis products can be affected markedly by the extent of softening that occurs. In spite of extensive work on biomass pyrolysis, the development of fluidity during the pyrolysis of biomass has not been quantified. This paper provides the first experimental investigation of proton mobility during biomass pyrolysis by in situ (1)H NMR spectroscopy. The origin of mobility is discussed for cellulose, lignin and xylan. The effect of minerals on cellulose mobility is also investigated. Interactions between polymers in the native biomass network are revealed by in situ (1)H NMR analysis.</div>
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